Hybrid journal (It can contain Open Access articles) ISSN (Print) 2043-8621 - ISSN (Online) 2043-863X Published by Inderscience Publishers[439 journals]
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Authors:Pedro Rivera, Eltahry Elghandour, Xi Wu Pages: 285 - 313 Abstract: CubeSats are cost-effective nanosatellites that undergo dynamic testing for launch qualification (NASA, 2013). The work presented here recreates a vibration test setup using finite element analysis (FEA) in order to predict and validate the dynamic response of a CubeSat test assembly. A Poly Picosatellite Orbital Deployer (P-Pod) is used as the housing and ejection mechanism for CubeSats. For modelling purposes however, a simplified P-Pod (<i>test pod</i>) was used, along with a <i>mass model</i> to represent a CubeSat. Sine sweep and random vibration tests were performed for the test pod and mass model. CAD geometry and material properties were imported into the FEA solver <i>Abaqus</i> to analyse the modes, natural frequencies, and damped response of the CubeSat assemblies. Comparing the FEA results to experimental data, the first six natural frequencies of the test pod were generated with an average 7% error and an average 4% error for the first eight modes of the test pod with mass model assembly. The validated FEA template was then applied to <i>CubeSat CPX</i>, a concept design structure used to demonstrate the application of the FEA models developed in this work. Keywords: CubeSat; nano-satellite; finite element analysis; FEA; vibration data comparison; FEA model validation; dynamic response prediction Citation: International Journal of Sustainable Materials and Structural Systems, Vol. 5, No. 4 (2021) pp. 285 - 313 PubDate: 2022-03-03T23:20:50-05:00 DOI: 10.1504/IJSMSS.2021.121260 Issue No:Vol. 5, No. 4 (2022)
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Authors:Pedro Rivera, Eltahry Elghandour, Xi Wu Pages: 314 - 325 Abstract: Concrete is a composite material which consists of fine or coarse aggregate and cement paste. Both coarse aggregates and fine aggregates are the main constituents of concrete and they are not only giving the body to the concrete, it also has a significant effect on the fresh and hardened concrete based on aggregate's shape, size, texture and grading. Properties of concrete was determined by replacing normal coarse aggregate with 0%, 10%, 20% and 30% weight of combined flaky and elongated aggregates, with 12 samples for each percent of replacement, and 12 * 3 = 36 samples for 7, 14 and 28 ages. Replacing 30% of combined flakiness and elongated aggregate into the concrete produce the mixes: too coarser, dry mix, harsh mixtures, difficult finish ability and pumpability, and lower compressive strength. Therefore, the flaky and elongated shape of aggregate should be avoided or limited to less than 20% in order to keep proper concrete properties. Keywords: compressive strength; elongated; flakiness; finitisability; shape; workability Citation: International Journal of Sustainable Materials and Structural Systems, Vol. 5, No. 4 (2021) pp. 314 - 325 PubDate: 2022-03-03T23:20:50-05:00 DOI: 10.1504/IJSMSS.2021.121277 Issue No:Vol. 5, No. 4 (2022)
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Authors:Mohd Shoeb, Lokesh Kumar, Abid Haleem Pages: 326 - 341 Abstract: Besides, to fabricate intricate geometric products, additive manufacturing (AM) provides crucial capacities such as flexibility to complement other manufacturing methods and application of different materials at a single manufacturing platform to produce composites multi-material products. 3D printing is one of the major technological platforms of AM and is considered an emerging and effective method towards composites developments due to its various advantages over conventional methods. Biocomposites fabricated using 3D printing technologies show remarkable success to replace traditional non-biodegradable materials. The multi-materials application for assimilated structures has enhanced functionality, reduced weight, and single-stage production. In this work, considering the requirement of a substantial selection of biocomposites constituent and fabrication methods, a literature-based review on biocomposites using 3D technologies have been carried out. For this purpose, the selected research papers from reputed journals have been studied. The biocomposites constituents, 3D printing methods, findings, future scope, and applications are arranged in tabular form with brief descriptions of applications and limitations of 3D printed biocomposites. The theories and methodologies may be used to manufacture 3D printed biocomposites to utilise in the industrial and medical fields. Keywords: additive manufacturing; AM; 3D printing; bio composites; fibre Citation: International Journal of Sustainable Materials and Structural Systems, Vol. 5, No. 4 (2021) pp. 326 - 341 PubDate: 2022-03-03T23:20:50-05:00 DOI: 10.1504/IJSMSS.2021.121269 Issue No:Vol. 5, No. 4 (2022)
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Authors:Mohd Shuaib, Abid Haleem, Mohd Javaid Pages: 342 - 356 Abstract: Additive manufacturing (AM) technologies are advancing and narrowing down their limitations in fields and have dramatically changed the way product is designed, prototyped, manufactured and become part of the supply chain (SC), thus providing customers with wider options. This paper tries to address the impact of AM on different elements of the SC and pursues an inductive research approach. The methodology adopted considers both positive and negative views for comparative studies of AM with traditional one. The proposed research explores the implication of the adoption of AM technologies on the supply chain. The topics range from simple SC issues to legal concerns, marketing strategy about new manufacturing technology, and even in non-business areas to explore the technical attributes. The adoption of AM in the industry is low and there is less academic research available. The study shows that AM affects the conventional manufacturing systems and needs to be upgraded in every stage of the SC, from raw material supply to the final delivery system. Keywords: additive manufacturing; AM; element of supply chain; inventory; innovation Citation: International Journal of Sustainable Materials and Structural Systems, Vol. 5, No. 4 (2021) pp. 342 - 356 PubDate: 2022-03-03T23:20:50-05:00 DOI: 10.1504/IJSMSS.2021.121270 Issue No:Vol. 5, No. 4 (2022)
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Authors:Ravi Butola, Mohit Tyagi, Anshul Chaudhary, Pankaj Raj Meena, Kartikeya Bector, Shantilal Meena Pages: 357 - 368 Abstract: There is a dire need for sustainable technologies to be used in the industry and friction stir processing (FSP) is very eco-friendly in that regard. Moreover, the use of natural fibres' ash has been steadily increasing in the industry. In this work, we have explored three different composites viz. Al reinforced with SiC (2%wt), Al reinforced with aloe vera (2%wt), and Aluminium matrix reinforced with both SiC and aloe vera in the same ratio. FSP is applied for the production of surface composites by incorporation of reinforcement in the matrix. The results showed that hardness value is increased with rotational speed and better distribution of reinforcement, which enhance the hardness of the composites. It is observed that rotation speed is the most significant parameter. We used the Taguchi method for optimisation of hardness, with reinforcement and tool rotational speed as variable parameters. The optimised sample was found to be at 1,000 rpm with SiC reinforcement. Keywords: friction stir processing; FSP; aloe vera ash; SiC; composite; Taguchi Citation: International Journal of Sustainable Materials and Structural Systems, Vol. 5, No. 4 (2021) pp. 357 - 368 PubDate: 2022-03-03T23:20:50-05:00 DOI: 10.1504/IJSMSS.2021.121272 Issue No:Vol. 5, No. 4 (2022)
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Authors:Badrinarayan Rath, Shirish Deo, Gangadhar Ramtekkar Pages: 369 - 388 Abstract: A lot of cracks are developing inside and on the surface of the concrete structure due to the early shrinkage of concrete, which decreases the strength, durability, and increases the life-cycle cost of structures. Hence prediction of shrinkage is very important to assess the risk of failure of the structure. The previous shrinkage models usually focused on the linear shrinkage of control concrete or cement is replaced with one or two kinds of supplementary cementitious materials without fibre. But the volumetric shrinkage model for the simultaneous replacement of cement and sand with supplementary cementitious materials with fibre has not been developed. In this research, the previous ACI model has been modified to forecast the volumetric shrinkage of control concrete or concrete in which both cement and sand are partially replaced with supplementary cementitious materials individually or simultaneously with glass fibre. Keywords: ACI209R-92 model; silica fume; blast furnace slag; glass fibre; volumetric shrinkage; shrinkage cone; shrinkage strain; comparison of shrinkage models; fibre reinforced concrete; regression analysis Citation: International Journal of Sustainable Materials and Structural Systems, Vol. 5, No. 4 (2021) pp. 369 - 388 PubDate: 2022-03-03T23:20:50-05:00 DOI: 10.1504/IJSMSS.2021.121274 Issue No:Vol. 5, No. 4 (2022)
Hybrid journal (It can contain Open Access articles)
[439 journals]
