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Publisher: RMIT Publishing   (Total: 403 journals)

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Showing 1 - 200 of 403 Journals sorted alphabetically
40 [degrees] South     Full-text available via subscription   (Followers: 2)
Aboriginal and Islander Health Worker J.     Full-text available via subscription   (Followers: 13)
Aboriginal Child at School     Full-text available via subscription   (Followers: 4)
About Performance     Full-text available via subscription   (Followers: 10)
Access     Full-text available via subscription   (Followers: 26)
ACCESS: Critical Perspectives on Communication, Cultural & Policy Studies     Full-text available via subscription   (Followers: 11)
Accounting, Accountability & Performance     Full-text available via subscription   (Followers: 14)
ACORN : The J. of Perioperative Nursing in Australia     Full-text available via subscription   (Followers: 18, SJR: 0.103, h-index: 4)
Adelaide Law Review     Full-text available via subscription   (Followers: 20)
Advocate: Newsletter of the National Tertiary Education Union     Full-text available via subscription   (Followers: 2)
Agenda: A J. of Policy Analysis and Reform     Full-text available via subscription   (Followers: 1)
Agora     Full-text available via subscription   (Followers: 3)
Agricultural Commodities     Full-text available via subscription   (SJR: 0.102, h-index: 8)
Agricultural Science     Full-text available via subscription   (Followers: 5)
AIMA Bulletin     Full-text available via subscription   (Followers: 4)
AJP : The Australian J. of Pharmacy     Full-text available via subscription   (Followers: 9, SJR: 0.102, h-index: 5)
AlterNative: An Intl. J. of Indigenous Peoples     Full-text available via subscription   (Followers: 8)
Analysis     Full-text available via subscription   (Followers: 4)
Ancient History : Resources for Teachers     Full-text available via subscription   (Followers: 1)
Anglican Historical Society J.     Full-text available via subscription   (Followers: 3)
Annals of the Royal Australasian College of Dental Surgeons     Full-text available via subscription   (Followers: 4, SJR: 0.101, h-index: 11)
ANZSLA Commentator, The     Full-text available via subscription   (Followers: 4)
Appita J.: J. of the Technical Association of the Australian and New Zealand Pulp and Paper Industry     Full-text available via subscription   (Followers: 8, SJR: 0.18, h-index: 27)
AQ - Australian Quarterly     Full-text available via subscription   (Followers: 1)
Arena J.     Full-text available via subscription   (Followers: 1)
Around the Globe     Full-text available via subscription   (Followers: 1)
Art + Law     Full-text available via subscription   (Followers: 11)
Art Monthly Australia     Full-text available via subscription   (Followers: 8)
Artefact : the journal of the Archaeological and Anthropological Society of Victoria     Full-text available via subscription   (Followers: 3)
Artlink     Full-text available via subscription   (Followers: 5)
Asia Pacific J. of Clinical Nutrition     Full-text available via subscription   (Followers: 10, SJR: 0.672, h-index: 51)
Asia Pacific J. of Health Management     Full-text available via subscription   (Followers: 2)
Aurora J.     Full-text available via subscription  
Australasian Biotechnology     Full-text available via subscription   (Followers: 1, SJR: 0.1, h-index: 8)
Australasian Catholic Record, The     Full-text available via subscription   (Followers: 7)
Australasian Drama Studies     Full-text available via subscription   (SJR: 0.101, h-index: 2)
Australasian Epidemiologist     Full-text available via subscription  
Australasian Historical Archaeology     Full-text available via subscription   (Followers: 7)
Australasian J. of Early Childhood     Full-text available via subscription   (Followers: 4, SJR: 0.174, h-index: 1)
Australasian J. of Gifted Education     Full-text available via subscription   (Followers: 4, SJR: 0.115, h-index: 3)
Australasian J. of Human Security, The     Full-text available via subscription   (Followers: 3)
Australasian J. of Irish Studies, The     Full-text available via subscription   (Followers: 9)
Australasian J. of Regional Studies, The     Full-text available via subscription   (Followers: 2)
Australasian Law Management J.     Full-text available via subscription   (Followers: 7)
Australasian Leisure Management     Full-text available via subscription   (Followers: 1)
Australasian Musculoskeletal Medicine     Full-text available via subscription   (Followers: 2)
Australasian Music Research     Full-text available via subscription   (Followers: 3)
Australasian Parks and Leisure     Full-text available via subscription   (Followers: 2)
Australasian Plant Conservation: J. of the Australian Network for Plant Conservation     Full-text available via subscription   (Followers: 4)
Australasian Policing     Full-text available via subscription   (Followers: 5)
Australasian Public Libraries and Information Services     Full-text available via subscription   (Followers: 38)
Australasian Review of African Studies, The     Full-text available via subscription   (Followers: 2)
Australian Aboriginal Studies     Full-text available via subscription   (Followers: 9, SJR: 0.109, h-index: 6)
Australian Advanced Aesthetics     Full-text available via subscription   (Followers: 4)
Australian Ageing Agenda     Full-text available via subscription   (Followers: 5)
Australian and Aotearoa New Zealand Psychodrama Association J.     Full-text available via subscription  
Australian and New Zealand Continence J.     Full-text available via subscription   (Followers: 3)
Australian and New Zealand Sports Law J.     Full-text available via subscription   (Followers: 8)
Australian Archaeology     Full-text available via subscription   (Followers: 12, SJR: 0.491, h-index: 15)
Australian Art Education     Full-text available via subscription   (Followers: 6)
Australian Bookseller & Publisher     Full-text available via subscription   (Followers: 1)
Australian Bulletin of Labour     Full-text available via subscription   (Followers: 4)
Australian Canegrower     Full-text available via subscription   (Followers: 2)
Australian Coeliac     Full-text available via subscription   (Followers: 2)
Australian Cottongrower, The     Full-text available via subscription   (Followers: 1)
Australian Educational and Developmental Psychologist, The     Full-text available via subscription   (Followers: 6, SJR: 0.143, h-index: 4)
Australian Family Physician     Full-text available via subscription   (Followers: 3, SJR: 0.364, h-index: 31)
Australian Field Ornithology     Full-text available via subscription   (Followers: 3, SJR: 0.141, h-index: 6)
Australian Forest Grower     Full-text available via subscription   (Followers: 3)
Australian Forestry     Full-text available via subscription   (Followers: 2, SJR: 0.252, h-index: 24)
Australian Grain     Full-text available via subscription   (Followers: 3)
Australian Holstein J.     Full-text available via subscription   (Followers: 1)
Australian Humanist, The     Full-text available via subscription   (Followers: 4)
Australian Indigenous Law Review     Full-text available via subscription   (Followers: 17)
Australian Intl. Law J.     Full-text available via subscription   (Followers: 26)
Australian J. of Acupuncture and Chinese Medicine     Full-text available via subscription   (Followers: 3, SJR: 0.106, h-index: 3)
Australian J. of Adult Learning     Full-text available via subscription   (Followers: 12, SJR: 0.159, h-index: 7)
Australian J. of Advanced Nursing     Full-text available via subscription   (Followers: 11, SJR: 0.225, h-index: 26)
Australian J. of Asian Law     Full-text available via subscription   (Followers: 5)
Australian J. of Cancer Nursing     Full-text available via subscription   (Followers: 10)
Australian J. of Civil Engineering     Full-text available via subscription   (Followers: 4, SJR: 0.17, h-index: 3)
Australian J. of Dyslexia and Learning Difficulties     Full-text available via subscription   (Followers: 8)
Australian J. of Emergency Management     Full-text available via subscription   (Followers: 6, SJR: 0.401, h-index: 18)
Australian J. of French Studies     Full-text available via subscription   (Followers: 6, SJR: 0.1, h-index: 5)
Australian J. of Herbal Medicine     Full-text available via subscription   (Followers: 3, SJR: 0.109, h-index: 7)
Australian J. of Language and Literacy, The     Full-text available via subscription   (Followers: 3, SJR: 0.399, h-index: 9)
Australian J. of Legal History     Full-text available via subscription   (Followers: 18)
Australian J. of Mechanical Engineering     Full-text available via subscription   (Followers: 3, SJR: 0.129, h-index: 4)
Australian J. of Medical Science     Full-text available via subscription   (Followers: 1, SJR: 0.122, h-index: 5)
Australian J. of Multi-Disciplinary Engineering     Full-text available via subscription   (Followers: 2)
Australian J. of Music Education     Full-text available via subscription   (Followers: 3)
Australian J. of Music Therapy     Full-text available via subscription   (Followers: 5)
Australian J. of Parapsychology     Full-text available via subscription   (Followers: 1)
Australian J. of Social Issues     Full-text available via subscription   (Followers: 6, SJR: 0.178, h-index: 20)
Australian J. of Structural Engineering     Full-text available via subscription   (Followers: 6, SJR: 0.296, h-index: 8)
Australian J. of Water Resources     Full-text available via subscription   (Followers: 6, SJR: 0.226, h-index: 9)
Australian J. on Volunteering     Full-text available via subscription   (Followers: 1)
Australian J.ism Review     Full-text available via subscription   (Followers: 7)
Australian Life Scientist     Full-text available via subscription   (Followers: 2, SJR: 0.1, h-index: 2)
Australian Literary Studies     Full-text available via subscription   (Followers: 5, SJR: 0.1, h-index: 6)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Nursing J. : ANJ     Full-text available via subscription   (Followers: 6)
Australian Orthoptic J.     Full-text available via subscription  
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 2)
Australian Screen Education Online     Full-text available via subscription   (Followers: 2)
Australian Senior Mathematics J.     Full-text available via subscription   (Followers: 1)
Australian Sugarcane     Full-text available via subscription  
Australian TAFE Teacher     Full-text available via subscription   (Followers: 2)
Australian Tax Forum     Full-text available via subscription   (Followers: 2)
Australian Universities' Review, The     Full-text available via subscription   (Followers: 3)
Australian Voice     Full-text available via subscription   (Followers: 4)
Bar News: The J. of the NSW Bar Association     Full-text available via subscription   (Followers: 5)
Bioethics Research Notes     Full-text available via subscription   (Followers: 14)
BOCSAR NSW Alcohol Studies Bulletins     Full-text available via subscription   (Followers: 5)
Bookseller + Publisher Magazine     Full-text available via subscription   (Followers: 5)
Breastfeeding Review     Full-text available via subscription   (Followers: 16, SJR: 0.31, h-index: 19)
British Review of New Zealand Studies     Full-text available via subscription   (Followers: 3)
Brolga: An Australian J. about Dance     Full-text available via subscription   (Followers: 1)
Cancer Forum     Full-text available via subscription   (SJR: 0.143, h-index: 10)
Cardiovascular Medicine in General Practice     Full-text available via subscription   (Followers: 6)
Chain Reaction     Full-text available via subscription  
Childrenz Issues: J. of the Children's Issues Centre     Full-text available via subscription  
Chiropractic J. of Australia     Full-text available via subscription   (SJR: 0.107, h-index: 3)
Chisholm Health Ethics Bulletin     Full-text available via subscription   (Followers: 1)
Church Heritage     Full-text available via subscription   (Followers: 8)
Commercial Law Quarterly: The J. of the Commercial Law Association of Australia     Full-text available via subscription   (Followers: 5)
Communicable Diseases Intelligence Quarterly Report     Full-text available via subscription   (Followers: 2, SJR: 0.567, h-index: 27)
Communication, Politics & Culture     Open Access   (Followers: 12)
Communities, Children and Families Australia     Full-text available via subscription   (Followers: 1)
Connect     Full-text available via subscription  
Contemporary PNG Studies     Full-text available via subscription  
Context: J. of Music Research     Full-text available via subscription   (Followers: 8)
Corporate Governance Law Review, The     Full-text available via subscription   (Followers: 7)
Creative Approaches to Research     Full-text available via subscription   (Followers: 11)
Critical Care and Resuscitation     Full-text available via subscription   (Followers: 15, SJR: 1.737, h-index: 24)
Cultural Studies Review     Full-text available via subscription   (Followers: 14)
Culture Scope     Full-text available via subscription   (Followers: 2)
Current Issues in Criminal Justice     Full-text available via subscription   (Followers: 8)
Dance Forum     Full-text available via subscription   (Followers: 2)
DANZ Quarterly: New Zealand Dance     Full-text available via subscription   (Followers: 3)
Day Surgery Australia     Full-text available via subscription   (Followers: 2)
Deakin Law Review     Full-text available via subscription   (Followers: 14)
Developing Practice : The Child, Youth and Family Work J.     Full-text available via subscription   (Followers: 20)
Early Days: J. of the Royal Western Australian Historical Society     Full-text available via subscription  
Early Education     Full-text available via subscription   (Followers: 9)
EarthSong J.: Perspectives in Ecology, Spirituality and Education     Full-text available via subscription   (Followers: 1)
East Asian Archives of Psychiatry     Full-text available via subscription   (Followers: 2, SJR: 0.331, h-index: 7)
Educare News: The National Newspaper for All Non-government Schools     Full-text available via subscription  
Educating Young Children: Learning and Teaching in the Early Childhood Years     Full-text available via subscription   (Followers: 14)
Education in Rural Australia     Full-text available via subscription   (Followers: 1)
Education, Research and Perspectives     Full-text available via subscription   (Followers: 10)
Educational Research J.     Full-text available via subscription   (Followers: 15)
Electronic J. of Radical Organisation Theory     Full-text available via subscription   (Followers: 3)
Employment Relations Record     Full-text available via subscription   (Followers: 2)
English in Aotearoa     Full-text available via subscription   (Followers: 1)
English in Australia     Full-text available via subscription   (Followers: 2, SJR: 0.19, h-index: 6)
Essays in French Literature and Culture     Full-text available via subscription   (Followers: 7)
Ethos: Official Publication of the Law Society of the Australian Capital Territory     Full-text available via subscription   (Followers: 4)
Eureka Street     Full-text available via subscription   (Followers: 4)
Extempore     Full-text available via subscription  
Family Matters     Full-text available via subscription   (Followers: 13, SJR: 0.259, h-index: 8)
Federal Law Review     Full-text available via subscription   (Followers: 22)
Fijian Studies: A J. of Contemporary Fiji     Full-text available via subscription  
Focus on Health Professional Education : A Multi-disciplinary J.     Full-text available via subscription   (Followers: 7)
Food New Zealand     Full-text available via subscription   (Followers: 4)
Fourth World J.     Full-text available via subscription  
Frontline     Full-text available via subscription   (Followers: 19)
Future Times     Full-text available via subscription   (Followers: 1)
Gambling Research: J. of the National Association for Gambling Studies (Australia)     Full-text available via subscription   (Followers: 5)
Gay and Lesbian Law J.     Full-text available via subscription   (Followers: 2)
Gender Impact Assessment     Full-text available via subscription  
Geographical Education     Full-text available via subscription   (Followers: 3)
Geriatric Medicine in General Practice     Full-text available via subscription   (Followers: 7)
Gestalt J. of Australia and New Zealand     Full-text available via subscription   (Followers: 2)
Globe, The     Full-text available via subscription   (Followers: 4)
Government News     Full-text available via subscription   (Followers: 2)
Great Circle: J. of the Australian Association for Maritime History, The     Full-text available via subscription   (Followers: 8)
Grief Matters : The Australian J. of Grief and Bereavement     Full-text available via subscription   (Followers: 10)
He Puna Korero: J. of Maori and Pacific Development     Full-text available via subscription  
Headmark     Full-text available via subscription   (Followers: 1)
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Health Issues     Full-text available via subscription   (Followers: 2)
Health Promotion J. of Australia : Official J. of Australian Association of Health Promotion Professionals     Full-text available via subscription   (Followers: 10, SJR: 0.606, h-index: 19)
Health Voices     Full-text available via subscription  
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History of Economics Review     Full-text available via subscription   (Followers: 10)
HIV Australia     Full-text available via subscription   (Followers: 3)
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Idiom     Full-text available via subscription   (Followers: 1)
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Instyle     Full-text available via subscription   (Followers: 1)
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Journal Cover Australian Journal of Mechanical Engineering
  [SJR: 0.129]   [H-I: 4]   [3 followers]  Follow
    
   Full-text available via subscription Subscription journal
   ISSN (Print) 1448-4846
   Published by RMIT Publishing Homepage  [403 journals]
  • Volume 11 Issue 2 - Bright future of micro-turbines: Nuclear emergency
           cooling and miniature generator
    • Abstract: Almasi, A
      Micro-turbines have many advantages over other drivers (for example, piston engine) such as higher power density, less footprint, lighter weight, low emissions, higher availability, better operation, higher reliability, easier maintenance, great fuel flexibility, low dynamic/shaking forces and fewer moving parts (usually only one moving assembly). Old fashion emergency diesel generators and battery systems have been used for decades in critical emergency units such as nuclear emergency cooling systems. They seem unreliable and unsuitable for modern facilities. Advanced micro-turbine is proposed as a reliable, lightweight and compact solution for emergency power supply applications. New applications and modern case studies of micro-turbines for nuclear facility emergency cooling system and miniature generator are explained.

      PubDate: Mon, 23 Sep 2013 15:41:56 GMT
       
  • Volume 11 Issue 2 - Recent developments and latest mechanical issues on
           variable speed large electric motor drivers for compressor trains (>50 MW)
           
    • Abstract: Almasi, A
      Large variable speed electric motor drivers (above 50 MW) are required for the modern large compressor trains. Mechanical issues, latest technologies and modern developments for the large electric motors are described. New simulation procedures, findings, mitigation methods and lessons learned on the rotor-dynamic, vibration, torsional issues and coupled mechanicalelectrical effects for the large electric motor drivers are discussed. A case study is presented.

      PubDate: Mon, 23 Sep 2013 15:38:56 GMT
       
  • Volume 11 Issue 2 - Modern compressor trains for new technology of
           offshore floating LNG units
    • Abstract: Almasi, A
      This article covers modern refrigeration compressor trains for new technology of offshore floating liquefied natural gas (LNG) units. Aero-derivative or multi-spool gas turbine driven centrifugal compressors, because of compact, light-weight, simple and reliable design, are the best and the optimum configuration for offshore LNG units. Latest achievements, advanced design and modern manufacturing notes of these compressor trains are presented. Case studies for 4, 2 and 0.5 Mt/a offshore LNG modules are discussed.

      PubDate: Mon, 23 Sep 2013 15:38:39 GMT
       
  • Volume 11 Issue 2 - Design and development of a low-cost solar tracker
    • Abstract: Ribeiro, SC; do Prado, PPL; Goncalves, JB; de Souza Soares, AM
      To become competitive, ultimately, photovoltaics should have its costs reduced and use photovoltaic systems of greater efficiency. The main steps in this direction are the use of new materials, the improvement in the manufacture of modules and the adoption of techniques of maximum power point tracking and of solar tracking. This article aims at presenting the project and development of an azimuth and elevation solar tracker, based on a new conception of the positioning sensor, composed of an array of four photoresistors. The two direct current motors that operate in the vertical and horizontal axes are controlled by a proportional-integral microcontroller. The conditions of the project were low cost, small energy consumption and versatility. The microcontroller can also incorporate a maximum power point tracking algorithm. The performance of solar tracker prototype in the initial phase of field tests can be considered appropriate.

      PubDate: Mon, 23 Sep 2013 15:29:41 GMT
       
  • Volume 11 Issue 2 - Validation of KIVA II simulation results with
           experimental data
    • Abstract: Anetor, L
      A combined study based on laser Doppler velocimetry measurements and numerical simulation was undertaken in order to validate the KIVA II numerical code. A rapid intake and compression machine was used for the experimental studies, while the numerical calculations were performed with the KIVA II computational fluid dynamics code. The k-epsilon turbulence model was used to represent the effects of turbulence. The measured mean radial and tangential velocities were found to be generally higher than their computed counterparts. The differences between these velocities range from 3.5% to 7% in magnitude for the re-entrant bowl chamber while they vary from 5% to 11% for the bowl-in-piston combustion chamber configuration. The measured values of the turbulence intensity close to the bowl axis in the re-entrant bowl chamber configuration were fairly accurately predicted, but the quality of the prediction diminishes as the bowl entrance region was approached. The values of the turbulence intensity were however, poorly reproduced near the axis of the bowl-in-piston chamber assembly. The experimental and predicted values of turbulence were found to differ by between 7% to 20% (re-entrant chamber) and 13% to 20% (bowl-in-piston). The results of the experimental data that were obtained from this study show that the random uncertainties in the mean radial and tangential velocities for both chamber configurations range from +/-13.2% to +/-19.2%, while the uncertainties in the root mean square velocities were about +/-14.1%.

      PubDate: Mon, 23 Sep 2013 15:27:19 GMT
       
  • Volume 11 Issue 2 - Chatter stability and tool wear predictions in the
           presence of chatter vibrations for orthogonal turning process
    • Abstract: Siddhpura, M; Paurobally, R
      The paper focuses on the stability of chatter vibrations and tool wear prediction. Chatter-free (stable) cutting parameters are obtained analytically for a sharp and a worn tool considerations and stability lobes of an orthogonal turning operation are constructed using simulations. The effects of the tool wear on chatter vibrations have been studied widely, but the study of the effects of chatter vibration on tool life is very limited. Tool wear tests are mainly conducted under stable cutting conditions, which really cannot explain the wear behaviour under vibratory cutting conditions. An attempt is made to predict the wear and life of a turning tool under chatter vibrations. A tool wear equation is derived which investigates the effects of self-excited chatter vibrations on tool wear in order to predict the tool life. This new tool wear equation clearly indicates that the tool wear increases very rapidly in the presence of chatter. The proposed analytical model and the tool wear equation have been validated with the orthogonal turning experimental results.

      PubDate: Wed, 18 Sep 2013 11:46:42 GMT
       
  • Volume 11 Issue 2 - Microstructure and mechanical properties of friction
           stir welded 6082-T6 aluminium alloy
    • Abstract: Gopi, S; Manonmani, K
      Aluminium alloy 6082-T6 is vital in the fabrication of light weight structures requiring high strength-to-weight ratio and good corrosion resistance. In this work, investigation is carried out at three different heat energy inputs termed as hot weld (HW), cold weld (CW) and weld at optimum condition (WOC). Heat energy in friction stir welding depends on spindle speed and weld speed. The characteristic study of tensile strength, micro-hardness and metallographic structure at different weld conditions were carried out. Higher heat input, ie. HW, shows fine and harmonised grains, but softening occurred across the weld. Lower heat input, ie. CW, shows better mechanical properties compared with HW, but prone to brittle fracture. The WOC compromises the CW as well as HW and provides better results.

      PubDate: Mon, 16 Sep 2013 10:54:55 GMT
       
  • Volume 11 Issue 2 - A quality and efficient tetrahedral mesh generation
           method
    • Abstract: Huang, C; Zhang, J; Liu, L; Li, G
      A method of unstructured tetrahedral mesh generation for general three-dimensional domain of arbitrary shape is presented. The method consists of two steps. First, generating the boundary tetrahedral mesh by the classic Delaunay method, then, using the advancing front method to create internal points and inserting them into the mesh by the Delaunay kernel procedure. The algorithm combines the advantages of the high point placement quality of the advancing front method and the high efficiency and convergence guaranty of the Delaunay algorithm. To get better efficiency, a new front identification and field point generation method is proposed and applied. Several examples have demonstrated the computational efficiency of our method and the high quality of meshes that generated within a reasonable time limit.

      PubDate: Mon, 16 Sep 2013 10:54:55 GMT
       
  • Volume 11 Issue 2 - An upper bound analysis of tube extrusion process
           through rotating conical dies
    • Abstract: Haghighat, H; Moradmand, M
      In this paper, an upper bound approach is used to analyse the tube extrusion process through steadily rotating conical dies. The material under deformation in the die and inside the container is divided into four deformation zones. In each deformation zone, a kinematically admissible velocity field is developed to evaluate the internal power, the power dissipated on frictional and velocity discontinuity surfaces and the twist moments generate on frictional surfaces. By equating the total power with the required external power, the extrusion pressure is determined. The tube extrusion process through rotating die is also simulated by using the fi nite element code, ABAQUS. Analytical results are compared with the results given by the fi nite element method. These comparisons show a good agreement.

      PubDate: Mon, 16 Sep 2013 10:54:55 GMT
       
  • Volume 11 Issue 2 - Finite element modelling to predict cutting parameters
           for milling on titanium alloy (Ti-6Al-4V)
    • Abstract: Ali, MH; Khidhir, BA; Ansari, MNM; Mohamed, B
      Finite element modelling (FEM) is considered a very important tool for estimating the cutting forces and stress-strain analysis because it can produce very accurate results, minimise the costs of manufacturing, and machining time saving as well. The present work predicts the cutting parameters by FEM after conducting the experimental process of titanium alloy (Ti-6Al-4V) by using a face milling operation. In addition, finite element modelling has been proven in simulation of titanium alloy (Ti-6Al-4V) dry cutting. The experimental tests were performed at several axial depths of cut while the feed rate and cutting speed remained constant. The test results led to the conclusion that the axial depth of cut directly affects cutting parameters during the machining process of titanium alloy (Ti-6Al-4V) and thus surface finish during production. The effects on cutting force components are more obvious than on stress and strain components. Besides that, it was found that the axial depth of cut affects the main cutting force more than the feed cutting force.

      PubDate: Mon, 16 Sep 2013 10:54:55 GMT
       
  • Volume 11 Issue 2 - Preface
    • Abstract: Wittek, Adam
      PubDate: Mon, 16 Sep 2013 10:54:55 GMT
       
  • Volume 11 Issue 1 - The extrapolation methods for computing cauchy
           principal value integral on intervals
    • Abstract: Li, J
      The generalised composite rectangle (constant) rule for the computation of Cauchy principle value integral with kernel 1/(x - s) is discussed, and the asymptotic expansion of error function is obtained. Based on the asymptotic expansion, a series is constructed to approach the singular point. An extrapolation algorithm is presented and the convergence rate is proved. At last, some examples are also illustrated to confirm the theoretical results and show the efficiency of the algorithms.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Chebyshev wavelet method for hypersingular integrals
           on circles and its applications
    • Abstract:
      The numerical algorithm of hypersingular integral is always an important topic in recent years. According to the different definitions of singular integral, we would get the different numerical methods. In this paper, we mainly discuss the approximate value of hypersingular integrals on circle by using the Chebyshev wavelet. A quadrature formula is given by making use of the orthogonality of Chebyshev wavelet and the important formula in generalised function. Then we apply the method to approximate the singular integrals with the Hilert kernel. Two numerical examples are included to demonstrate the validity and applicability of the approach.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Non-linear quadrature element analysis of composite
           beams with partial interaction
    • Abstract: Shen, ZQ; Zhong, HZ
      Quadrature element formulation for material non-linear analysis of composite beams with partial interaction is derived on the basis of the Newmark kinematical model. The quadrature element method is characterised by direct evaluation of the integrals involved in the variational description of a problem. The number of integration points in a quadrature element is adjustable in accordance with convergence requirement. A representative case is studied and results are compared with finite element solutions. It is shown that high computational accuracy and efficiency are achieved using the quadrature element method.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Development of complex-variable differentiation method
           and its application in isogeometric analysis
    • Abstract: Hu, JX; Gao, XW
      The complex-variable differentiation method (CVDM) is a very promising method to compute derivatives of complicated functions and is free from cancellation errors which often occur in the finite difference method. In this paper, CVDM is developed for the two-variable situation and is first applied to the isogeometric analysis method in which the computation of derivatives of rational functions represented by non-uniform rational B-splines (NURBS) method is very complicated. An example about h-refinement is given and the computational results show that the derived formulations in the paper is correct and the computation of derivatives using CVDM in isogeometric analysis is much simpler than using the traditional NURBS derivative formula.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Application of the pFFT algorithm to the hybrid-domain
           boundary element method for acoustic problems
    • Abstract: Yan, ZY; Gao, XW
      The pre-corrected fast Fourier transform (pFFT) algorithm is applied to accelerate the hybrid-domain boundary element method (BEM) for acoustic problems. Based on the previous successful applications of this algorithm to the BEMs for the exterior domain and interior domain acoustic problems, the implementation of this algorithm in the hybrid-domain BEM for acoustic problems is studied in detail. To validate the present method, the simulation on a spherical Helmholtz resonator is carried out. The numerical results are compared with those obtained by the direct multi-domain BEM and the resonance frequency is compared with the corresponding approximate solution. As expected, the present results agree well with those found by the direct BEM. But the remaining problem is that the GMRES solver without a pre-conditioner converges very slowly for the hybrid-domain BEM.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Application of the boundary face method to solve the
           3D acoustic wave problems
    • Abstract: Wang, X; Zhang, J; Zhou, F
      The boundary face method based on the Burton-Miller equation is applied in this paper to solve radiation and scattering problem of acoustic waves. The present method is referred to as CHBFM. In the CHBFM, the boundary integration and field variables approximation are both performed in the parametric space of each boundary face exactly the same as the B-rep data structure in standard solid modelling packages. The geometric data, such as coordinates and the outward normals at Gaussian integration points are calculated directly from the faces rather than from element interpolation, thus the geometric errors are avoided. The CHBFM has been integrated into the widely used commercial CAD package UG-NX, and thus able to handle problems with complicated geometries. Numerical examples were presented to illustrate the accuracy and validity of the CHBFM. The results have shown that our method has better accuracy than the traditional method with almost the same CPU time when using the same number of elements. In addition, the CAD models, even with complicated geometry, are directly converted into the CHBFM models, thus the present method provides a new way toward automatic simulation.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Application of the boundary face method for thermal
           analysis in dam construction
    • Abstract: He, J; Zhou, F; Zhang, J; Liu, L; Li, G
      This paper applies the boundary face method (BFM) to solve both steady-state and unsteady-state heat conduction problems in the dam construction. Instead of employing the isoparametric elements as in the boundary and finite element methods, the BFM uses directly geometric models from CAD packages to avoid geometric errors for any complex structures. Moreover, the variable approximations and the boundary integration are all performed in the parametric space of the boundary surfaces, which means that the elements and integral patches are defined in the parametric space. A numerical example of steady-state analysis presented in this paper is a concrete dam structure which consists of several blocks. The example of unsteady-state analysis, which concerns a single block with several holes in it, has also been presented to illustrate the validity and the efficiency of the proposed method.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Numerical solution of stress intensity factors of
           multiple cracks in great numbers with eigen crack opening displacement
           boundary integral equations
    • Abstract: Ma, H; Guo, Z; Yan, C; Dhanasekar, M
      Based on the eigen crack opening displacement (COD) boundary integral equations (BIEs), a newly developed computational approach is proposed for the analysis of multiple crack problems. The eigen COD particularly refers to a crack in an infinite domain under fictitious traction acting on the crack surface. With the concept of eigen COD, the multiple cracks in great number can be solved by using the conventional displacement discontinuity BIEs in an iterative fashion with a small size of system matrix. The interactions among cracks are dealt with by two parts according to the distances of cracks to the current crack. The strong effects of cracks in adjacent group are treated with the aid of the local Eshelby matrix derived from the traction BIEs in discrete form. While the relatively week effects of cracks in far-field group are treated in the iteration procedures. Numerical examples are provided for the stress intensity factors of multiple cracks, up to several thousands in number, with the proposed approach. By comparing with the analytical solutions in the literature as well as solutions of the dual BIEs, the effectiveness and the efficiencies of the proposed approach are verified.

      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 11 Issue 1 - Meshless and boundary element methods
    • Abstract: Yao, Zhenhan
      PubDate: Tue, 19 Feb 2013 09:29:11 GMT
       
  • Volume 10 Issue 2 - Investigations of surface roughness and flank wear
           behaviour in machining of Inconel 718
    • Abstract: Thirumalai, R; Senthilkumaar, JS; Selvarani, P; Arunachalam, RM; Senthilkumaar, KM
      This paper describes the development of response models such as surface roughness and flank wear for machining Inconel 718. Several experiments are conducted by varying the cutting speed, feed, and depth of cut as machining parameters based on the design of experiments. The surface roughness and flank wear are measured as responses against these parameters. Response optimisation has been presented showing the global solutions for the factors cutting speed, feed and depth of cut and their predicted responses along with the composite desirability of the machining process. Contour plots and surface plots for the responses are also presented. Also this paper is an attempt to Taguchi optimisation technique to study the machinability performances of Inconel 718. Taguchi approach is an efficient and effective experimental method in which a response variable can be optimised, given various control and noise factors, using fewer experiments than a factorial design. An orthogonal array of L27 was used. Signal-to-noise ratio and ANOVA analyses were carried out to identify the significant factors.

      PubDate: Thu, 3 Jan 2013 16:59:27 GMT
       
  • Volume 10 Issue 2 - A study of the effects of friction on flank wear and
           the role of friction in tool wear monitoring
    • Abstract: Siddhpura, A; Paurobally, R
      Tool wear is the most commonly observed and unavoidable aspect of metal cutting. The worn tools adversely affect the surface finish of the workpiece, and they can be replaced in time if a tool wear monitoring system is used. During turning, the freshly generated workpiece surface comes into contact with the flank face and friction takes place at the interface. As a result of friction, flank wear occurs. Increasing flank wear results in an increase in the contact area at the flank-workpiece interface. This in turn increases the coefficient of friction, and due to this, stick slip vibration is likely to occur. The modelling of such a system is carried out in this paper. The friction at the flank-workpiece interface is still considered as complex, but the occurrence of stick-slip as a result of flank wear can be utilised to develop tool wear monitoring systems. Most studies regarding friction in metal cutting are limited to the tool-chip interface. This paper outlines a method to correlate flank wear and friction. The equations of motion of the cutting tool are derived considering stick-slip friction taking place at the flank-workpiece interface, and the resulting forces acting on the tool flank are correlated with flank wear. The effect of friction on the tool flank wear is studied using MATLAB simulations and an increase in the amplitude of tool vibration, worn tool cutting forces and coefficient of friction with increasing flank wear were observed. The relationship between the friction and the tool wear derived here can be used to carry out effective tool condition monitoring and tool life prognosis.

      PubDate: Thu, 3 Jan 2013 16:58:32 GMT
       
  • Volume 10 Issue 2 - Study of friction stir welding parameters in
           conventional milling machine for 6082-T6 aluminium alloy
    • Abstract: Gopi, S; Manonmani, K
      A conventional milling (CM) machine is capable of inducing the same axial force parameter as that of a friction stir welding (FSW) machine. In a CM machine, tool shoulder penetration, an alternate parameter instead of axial force of FSW machines, was used to carry out FSW joints. The process parameters such as spindle speed, welding speed, shoulder penetration, pin profile and shoulder profile at five levels were studied. With Taguchi orthogonal array, the process parameters were optimised to maximise the tensile strength of the FSW joint. From the investigation, it was found that the 1100 rpm spindle speed, hexagonal pin profile and 0.15 mm shoulder penetration reveals good results. Metallographic studies were carried out with a scanning electron microscope and energy dispersive x-ray spectrometer.

      PubDate: Thu, 3 Jan 2013 16:57:40 GMT
       
  • Volume 10 Issue 2 - Comparative study of engine oil tribology, wear and
           combustion characteristics of direct injection compression ignition engine
           fuelled with castor oil biodiesel and diesel fuel
    • Abstract: Arumugam, S; Sriram, G
      In the present work the tribological evaluation of engine oil characteristics, engine wear and engine performance was carried out on a four-stroke single cylinder direct injection diesel engine operated using B20 castor oil biodiesel and diesel fuel separately. The castor biodiesel has very low cloud and pour point that show that this fuel is very suitable for using in extreme winter temperature. Both the engines were subjected to 150-hour long-term endurance test. The engine oil samples collected from the engine at regular intervals of 25 hours were subjected to tribological analyses, namely viscosity, flash and fire point, total acid number (TAN), soot, ash content, water content and wear debris analysis. It was observed that the castor oil methyl ester with diesel blend up to 20% (B20) does not affect the engine oil performance with respect to viscosity, TAN, soot and wear. The performance of castor oil biodiesel is found to be comparable to that of diesel fuel, and the additional lubricity of biodiesel fuel due to higher viscosity as compared to diesel fuel resulted in lower wear of moving parts and thus improved the engine durability.

      PubDate: Thu, 3 Jan 2013 16:56:42 GMT
       
  • Volume 10 Issue 2 - Microstructural evolution and mechanical behaviour of
           AA6063/SiCp bulk composites fabricated using friction stir processing
    • Abstract: Puviyarasan, M; Senthil Kumar, VS
      Friction stir processing (FSP) is a simple and effective technique to fabricate aluminium metal matrix composites with uniform particle distribution. In this investigation, AA6063/SiCp bulk composites were fabricated using FSP. Experiments were conducted to study the effect of the feed rate on particle dispersement, hardness and tensile properties. The fabricated composites were observed to have increased micro-hardness and decreased yield strength. Optical and scanning electron microscopy revealed that particles in the matrix are uniformly and widely dispersed, and this contributes to the uniform strength of the composite.

      PubDate: Thu, 3 Jan 2013 16:54:00 GMT
       
  • Volume 10 Issue 2 - Effect of lifting device and biomechanical force
           assessment during lifting in steel rolling mill
    • Abstract: Singh, S; Kumar, S
      This paper reports on the investigation of the effect of lifting parameters on compressive and shear forces at the lower back (about the L5/S1 region of the spine). The experimental study is conducted under varying load weights, horizontal location of load from L5/S1 and lifting technique (stoop, full squat and lifting device). For this, the design of experiments approach using Taguchi's orthogonal array is used. The level of importance of the parameters on compressive and shear force is determined using analysis of variance. In the study 8% to 18% reduction in spinal disc compression and 25% to 28% reduction in shear force is observed after applying lifting device.

      PubDate: Thu, 3 Jan 2013 16:53:11 GMT
       
  • Volume 10 Issue 2 - Pairing of intelligent design concept method and Kano
           model for product development
    • Abstract: Senthil Kumar, PS; Balasubramanian, S; Suresh, RK
      The deployment of scientific approach to customers' voice by means of customer science to achieve a good product development process. This model means implementing Customer Kano Model for turning the design perception into a precise knowledge as more creative activities from the hidden knowledge of designing using statistical science. The model has been applied to product design process and the results obtained are shown. An application of Kano CAGE model has further given the option of customer centric evaluations and which leads to an optimum product development process. A concept is arrived at and importance is given to Kano model.

      PubDate: Thu, 3 Jan 2013 16:50:09 GMT
       
  • Volume 10 Issue 2 - Latest gas compressor technologies for modern floating
           production storage and offloading vessels and offshore platforms
    • Abstract: Almasi, A
      A large number of compressors are installed on floating production storage and offloading (FPSO) vessels, offshore platforms and offshore floating production units (FPUs). This article covers latest achievements, modern designs and manufacturing aspects of centrifugal compressor packages for offshore applications. Modern and compact integrally geared compressor applications for FPSO vessels are discussed. Case studies are also presented.

      PubDate: Thu, 3 Jan 2013 16:48:25 GMT
       
  • Volume 10 Issue 2 - Monitoring methods to identify damaged, cracked and
           worn rotating machine components
    • Abstract: Almasi, A
      The latest methods, new developments and modern recommendations regarding monitoring of the loose stationary parts (such as loose foundation bolts), the loose rotating parts, the problematic (or worn) bearing, and the cracked rotor using the vibrational data are described. Practical notes and concepts are presented for engineers to quickly understand the key impacts and consequences without numerous graphs and complex mathematics. Three case studies based on the actual field data are also discussed.

      PubDate: Thu, 3 Jan 2013 16:45:27 GMT
       
  • Volume 10 Issue 2 - An investigation on gearbox fault detection using
           vibration analysis techniques: A review
    • Abstract: Aherwar, A
      Gears are critical element in a variety of industrial applications such as machine tool and gearboxes. An unexpected failure of the gear may cause significant economic losses. For that reason, fault diagnosis in gears has been the subject of intensive research. Vibration analysis has been used as a predictive maintenance procedure and as a support for machinery maintenance decisions. As a general rule, machines do not breakdown or fail without some form of warning, which is indicated by an increased vibration level. By measuring and analysing the machine's vibration, it is possible to determine both the nature and severity of the defect, and hence predict the machine's failure. The vibration signal of a gearbox carries the signature of the fault in the gears, and early fault detection of the gearbox is possible by analysing the vibration signal using different signal processing techniques. This paper presents a review of a variety of diagnosis techniques that have had demonstrated success when applied to rotating machinery, and highlights fault detection and identification techniques based mainly on vibration analysis approaches. The paper concludes with a brief description of a new approach to diagnosis using neural networks, fuzzy sets, expert system and fault diagnosis based on hybrid artificial intelligence techniques.

      PubDate: Thu, 3 Jan 2013 16:44:08 GMT
       
  • Volume 9 Issue 2 - Reducing non-stick on pad for wire bond: A review
    • Abstract: Sethu, RS
      One of the largest losses in semiconductor assembly operations is non-stick on pad (NSOP) failures. NSOP failures are costly as the entire device will need to be rejected if there is one such failure on any bond pad. The review is aimed to look at the failure modes associated with poor bond pad quality, its causes and effects, and the known detection/prevention methods.

      PubDate: Thu, 3 Jan 2013 16:37:40 GMT
       
  • Volume 10 Issue 2 - Preface
    • Abstract: Wittek, Adam
      PubDate: Tue, 18 Dec 2012 09:49:19 GMT
       
  • Volume 10 Issue 1 - Latest techniques and practical notes on anti-surge
           systems for centrifugal compressors
    • Abstract: Almasi, A
      The operating range of process centrifugal compressors is limited by an instability range commonly called "surge", which occurs during low flow or high head conditions and can result in extensive damage. There are high expectations to improve anti-surge systems of process compressors to increase reliability as well as energy efficiencies and performance. Practical recommendations on anti-surge system sizing, selection, configuration and design are presented. Considerations regarding stall, choke, dynamic studies, anti-surge loop configuration, recycle cooling, anti-surge valve, instruments and anti-surge system parameters are also discussed. Case studies are presented.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Practical notes and latest technologies on modern
           centrifugal compressor component and system selection
    • Abstract: Almasi, A
      Practical recommendations on modern compressor casing, impellers, shaft, internals, material selection, control system, surge prevention systems, diaphragms, casing connections, nozzle loads, bearing, and balance piston are explained. This article highlights the lessons learned from several industrial experiences in relation to the selection, design and manufacturing of compressor components especially critical parts such as dry gas seals, seal support systems, control units and surge prevention systems for the centrifugal compressors. Particularly the tandem type seal is discussed in detail. Case studies are presented.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Process analysis of abrasive jet micromachining for
           brittle materials
    • Abstract: Li, HZ
      Abrasive jet micromachining (AJM) is a non-traditional machining process based on the erosion of substrates by an abrasive-laden air jet. It is a promising machining technique for the cost effective fabrication of micro-devices from brittle and hard materials. For the machining process to be more efficient and better predictable, mathematical models for the AJM process are necessary. This paper presented an analysis of the AJM process for brittle materials. The analysis is based on a fundamental erosion model of solid particle impact for brittle materials, and a recently developed model for the particle velocity in micro-abrasive jet, to form a mathematical basis for AJM process modelling and optimisation. Experimental study on the flow characteristics and the effects of some important process parameters are also given.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Effect of cross-sectional geometry on superelasticity
           of helical nanobelts
    • Abstract: Li, N; Cui, Y; Fu, D
      The shape memory effect (SME) and the superelasticity make nanoscale chiral structures such as helical ZnO nanobelts promising for a wide range of important applications. In this paper, based on the non-linear rod model with surface effect (Wang et al, 2011), the effects of surfaces and geometrical size of the cross-section on the superelasticity of the helical nanobelts have been investigated quantitatively. Our results demonstrate the superelasticity of helical nanobelts exhibit a distinct size effect, depending on the cross-sectional geometry. We also show the efficiency of the energy storage and retrieval of the helical nanobelts induced by the superelasticity depends strongly on the cross-sectional geometry.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Improving accuracy of opening-mode stress intensity
           factor in two-dimensional media using fundamental solution based finite
           element model
    • Abstract: Wang, H; Qin, Q-H; Yao, W
      A hybrid finite element method (FEM) is developed for determining stress intensity factor of opening-mode cracks. The model is based on fundamental solutions and higherorder displacement extrapolation. In the present formulation, linear combination of fundamental solutions and shape functions are respectively used to approximate the element interior and frame fields. The equality of the two approximations is enforced through a hybrid functional and element boundary integrals are involved only. Numerical examples are considered to investigate effects of element size, number of elements and crack length on crack tip singularity. Results show that the proposed approach can achieve better numerical accuracy than conventional FEM.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Combustion chamber geometry effects in spark ignition
           engine exhaust emissions
    • Abstract: Zefaan, H
      The paper presents experimental results showing the effect of hemispherical, cylindrical and oval bowls-in-piston on exhaust gases within the cylinder of spark ignition engines. Results indicate that bowls increase both heat transfer and flame speed. Consequently, flame ability must become wide to reduce both engine emissions and cycle combustion variability. Hemispherical effect ranked first on hydrocarbon and carbon monoxide emissions, followed by cylindrical then oval. Nitrogen oxides are in opposite direction, with oval ranked first, followed by cylindrical then hemispherical.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Mathematical approach for optimal machining fixture
           layout and clamping forces
    • Abstract: Selvakumar, S; Arulshri, KP; Padmanaban, KP; Sasikumar, KSK
      Machining fixtures are used to locate and constrain a workpiece during machining operation. An ideal fixture design exhibits minimal moment while machining. The purpose of this work is to design an optimum fixture layout in order to reduce the maximum elastic deformation of the workpiece by reducing the moment caused by the clamping and machining forces acting on the workpiece while machining. This can be achieved by selecting the optimal locations of fixturing elements such as locators and clamps. The objective equations are formed based on equilibrium conditions and are solved for minimum value of clamping force condition for various fixture layouts. The required equations are formulated based on the equilibrium conditions of forces, moments and stick/slip conditions. Then these equations are solved for several fixture layouts and the corresponding clamping force sets are found. Thus the clamping forces satisfying constraints, along with its respective layout are solved for deformation values using ANSYS software. Layout providing minimum deformation value is selected as the optimal one.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Experimental investigation on the effect of applied
           pressure on microstructure and mechanical properties of squeeze cast AC2A
           aluminium alloy
    • Abstract: Senthil, P; Amirthagadeswaran, KS
      This investigation focuses on the attempt made to prepare AC2A castings of a non-symmetrical component through squeeze casting process. Samples were produced to study the effect of squeeze pressures (0.1, 25, 50, 75, 100 and 125 MPa) on microstructure and mechanical properties of the alloy. Results of hardness and tensile tests indicated that squeeze cast specimens exhibited higher mechanical properties than gravity die cast specimens. This was mainly due to applied pressure which resulted in effective filling of the melt into die cavity, microstructural refinement and good heat transfer between the melt and the die. Pressure of 50 MPa was found to be sufficient for pore free castings and pressure of 100 MPa was noted for sound castings. From this study, the squeeze casting process is noted to be suitable for processing this alloy.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 10 Issue 1 - Anomalous sub-diffusion equations by the meshless
           collocation method
    • Abstract: Gu, YT; Zhuang, P
      Recently, many new applications in engineering and science are governed by a series of fractional ordinary differential equations or fractional partial differential equations (FPDEs), in which the differential order is with a fractional order. The anomalous sub-diffusion equation (ASDE) is a typical FPDE. The current dominant numerical method for modelling ASDE is finite difference method, which is based on a pre-defined grid leading to inherited issues or shortcomings. Because of its distinguished advantages, the meshless method has good potential in simulation of ASDE. This paper aims to develop an implicit meshless collocation technique based on the moving least squares (MLS) approximation for numerical simulation of ASDE. The discrete system of equations is obtained by using the MLS meshless shape functions and the meshless collocation formulation. The stability and convergence of this meshless approach related to the time discretisation are investigated theoretically and numerically. The numerical examples with regular and irregular nodal distributions are used to validate and investigate accuracy and efficiency of the newly developed meshless formulation. It is concluded that the present meshless formulation is very effective for the modelling and simulation of ASDEs.

      PubDate: Fri, 9 Nov 2012 12:57:52 GMT
       
  • Volume 9 Issue 2 - Construction of the marginal abatement cost curve:
           Retrofitting carbon capture and storage in Australia
    • Abstract: West, J
      Marginal abatement cost curves are a principal tool used for measuring the relative economic impact of emissions abatement mechanisms. Abatement curves can be constructed using either a top-down approach based on aggregated microeconomic models or using a bottom-up approach based on an engineering assessment that analyses different technical potentials for emission reductions. While top-down models offer simplicity and ease of interpretation, they are not as robust as the bottom-up approach, particularly for assessing the implications of new technologies such as carbon capture and storage (CCS). Using a bottom-up approach and incorporating real options analysis, this study redefines the relative abatement costs for retrofitting post-combustion CCS technology to coal-fired generators and then reconstructs the Australian marginal emissions abatement curve. The revised curve provides power generators and other industry sectors with more accurate and stable abatement cost estimates for these technologies relative to alternate abatement options.

      PubDate: Thu, 12 Jul 2012 12:17:39 GMT
       
  • Volume 9 Issue 2 - A simple CAD method for constructing sand-heap
           formations as an analogous means of determining the fully plastic torque
           capacity of various structural sections
    • Abstract: Bardell, NS; Evans, GJ
      A brief review is presented of the sand-heap analogy as a means of determining the ultimate plastic torque capacity of a ductile metallic prismatic bar of known cross-section. A novel method using an industry-standard computer-aided design (CAD) tool is then described for determining the shape and corresponding sand-heap volume for a general cross-section that can include the presence of keyways, fillets, rebates, and holes. Existing solutions for simple regular cross-section shapes are used as a benchmark for the solutions from the new method, and perfect agreement is found. Subsequent examples are presented which demonstrate the ease with which sand-heap formations and their corresponding volumes can be found for more general cross-sections that are more representative of those used in practical engineering applications.

      PubDate: Thu, 12 Jul 2012 12:14:24 GMT
       
  • Volume 9 Issue 2 - Simulation of viscous and viscoelastic flows using a
           RBF-galerkin approach
    • Abstract: Ho-Minh, D; Mai-Duy, N; Tran-Cong, T
      In this paper, two-dimensional flows of viscous and viscoelastic fluids are simulated using radial-basis-function networks (RBFNs) and Cartesian grids. To solve the governing equations, high-order approximations based on one-dimensional integrated-RBFNs are employed to approximate the field variables and the Galerkin discretisation formulation is utilised to transform the differential equation into a set of algebraic equations. The main distinguishing feature of the above combination is that two processes, namely the representation of the field variables and the discretisation of the governing equations, are both based on integration. In sharp contrast to conventional Galerkin methods, derivative boundary conditions are presently imposed in an exact manner. Two test problems, namely natural convection of a Newtonian fluid in a concentric annulus and fully-developed flow of an Criminale-Ericksen-Filbey (CEF) fluid in a rectangular duct, are studied. Results obtained are compared with published data in the literature.

      PubDate: Thu, 12 Jul 2012 12:13:09 GMT
       
  • Volume 9 Issue 2 - Characteristics of interlaminar stresses for damages in
           adhesively-bonded composite single lap joints
    • Abstract: Panigrahi, SK; Zhang, YX
      In this paper three-dimensional non-linear finite element analyses are carried out to evaluate accurately the stresses over the different critical surfaces for adhesion failure, cohesion failure and delamination damages of an adhesively-bonded fibre-reinforced polymer (FRP) composite single lap joint (SLJ) subjected to an in-plane loading. The top and bottom adherends of the SLJ are formed by eight layers of unidirectional graphite FRP composite and the material of the adhesive is epoxy. The out-of-plane stresses and their distribution over the critical surfaces are presented, and conclusions about the damages and failures for the adhesively-bonded composite SLJ are drawn.

      PubDate: Thu, 12 Jul 2012 12:12:29 GMT
       
  • Volume 9 Issue 2 - Latest technologies of rotating machine lubrication and
           lubricant selection
    • Abstract: Almasi, A
      Practical notes and latest achievements on lubrication of rotating machines, including reciprocating compressors, screw compressors, centrifugal compressors, axial compressors, steam turbines, gas turbines, engines, pumps, electrical motors and generators, are discussed. Also recommendations about mineral oils, synthetic oils, synthesised hydrocarbon lubricants, gear unit lubrication and bearing lubrication are presented. Moreover, practical recommendations on correct lubrication oil selection, modern lubrication oil systems and effective lubricant change-over are described. Some case studies are also presented.

      PubDate: Thu, 12 Jul 2012 12:10:38 GMT
       
  • Volume 9 Issue 2 - Advanced methods for shop performance tests of process
           centrifugal compressors
    • Abstract: Almasi, A
      Centrifugal compressor purchasers and end-users realise the value and payback of accurate and proper shop performance test and shop mechanical run test. Shop test is a necessary step for centrifugal compressor future reliability and trouble free operation. Procedures and methods to correctly implement shop performance test and shop mechanical run test of process centrifugal performance are discussed. ASME-PTC-10 type 1 performance test should be done wherever possible. Otherwise arrangement and details of ASME-PTC-10 type 2 performance test, as close to specified operating condition as possible, should be fixed before machine order.

      PubDate: Thu, 12 Jul 2012 12:09:55 GMT
       
  • Volume 9 Issue 1 - New technology of subsea and offshore direct drive
           compressor with magnetic bearing
    • Abstract: Almasi, Amin
      Subsea compressor offers tremendous potentials, but also some obstacles. Using magnetic bearings can eliminate lubrication oil system as well as seal system. High-speed permanentmagnet electrical-motor direct-drive technology allows centrifugal compressor to meet optimum speed, eliminating gear box. This design offers inherent machinery health monitoring features and very compact and reliable train. New technology of hermetically sealed direct drive centrifugal compressor for offshore and subsea applications are reviewed and discussed. Latest technologies and modern achievements on direct drive compressor designs, magnetic bearings, permanent magnet motors, cooling systems and train arrangements are reviewed. Case studies for horizontal and vertical compressor trains are presented.

      PubDate: Tue, 19 Jun 2012 12:05:44 GMT
       
  • Volume 9 Issue 1 - Advances in driver selection and compressor
           arrangements of LNG plants
    • Abstract: Almasi, Amin
      This article presents practical notes and guidelines on driver type, power management and compressor train arrangement for LNG plants. Electrical motor driven refrigeration trains are used successfully in small and medium size LNG facilities and many operators are investigating to use this technology for large LNG modules. Optimum compressor and driver arrangement for LNG plants are discussed. Evaluations show overall installation and operation costs of the gas turbine driven refrigeration system and electrical motor driven trains is close to each other. Case studies are presented.

      PubDate: Tue, 19 Jun 2012 12:05:44 GMT
       
 
 
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