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Journal of The Institution of Engineers (India) : Series E
Journal Prestige (SJR): 0.197  Number of Followers: 2  Hybrid journal (It can contain Open Access articles)ISSN (Print) 2250-2483 - ISSN (Online) 2250-2491 Published by Springer-Verlag  [2467 journals]
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- Facile Synthesis, Characterization, and Photocatalytic study of La2O3/SnO2
Nanocomposites-
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Abstract: Abstract In this present work, the La2O3, SnO2, and La2O3/SnO2 nanocomposite (NC) were synthesized by the co-precipitation method at ambient temperature to study the photocatalytic effect. The structural, morphological, and optical characteristics of these prepared samples were analyzed by XRD, FE-SEM, FTIR, Raman, and UV–Visible spectrometer. The photocatalytic activity of the La2O3, SnO2, and La2O3/SnO2 nanocomposite (NC) were studied by observing the decomposition of methylene blue (MB) dye under UV light irradiation at different time intervals. The La2O3/SnO2 nanocomposite removed the methylene blue dye by 92% in 70 min which is highly efficient as compared to the pure La2O3 and SnO2 nanoparticles. Similarly, degradation of La2O3 nanoparticles was found at 80% in 70 min, and tin oxide achieve this at 83% at 70 min for degradation of methylene blue dye.
PubDate: 2023-03-18
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- A Novel Study of Synthesis, Characterization and Erosion Wear Analysis of
Glass–Jute Polyester Hybrid Composite-
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Abstract: Abstract In this study, an attempt has been taken to fabricate a new class of hybrid composite consisting of polyester as a matrix material with glass and jute fibers for reinforcement. Twelve composite specimens have been fabricated by varying the fiber loading and orientation; further, the effect of fiber content and orientation on different physical criteria (density, void content and water absorption behavior), mechanical criteria (tensile and flexural strength) and erosion wear property of the prepared samples are investigated. Experimental design of Taguchi is implemented to study the effect of various control factors such as standoff distance, impact velocity, composite composition, fiber orientation and impingement angle on erosion wear rate of the composites. Scanning electron microscopic analysis is done on the fractured surface of the composites to study the mode of failure under tensile and flexural loading conditions. From the experimental results, it is found that inclusion of fiber decreases the density of the composites, whereas the void and mechanical properties increase with fiber loading. From the Experimental design of Taguchi, it is found that composite composition is the most influencing control factor affecting the wear rate of the composites.
PubDate: 2023-03-17
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- Effect of Yarn Linear Density on Static and Dynamic Mechanical Properties
of Jute Yarn Reinforced Epoxy Composites-
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Abstract: Abstract In today's scenario, due to environmental sustainability use of natural fibre is increased as reinforcement material in polymer composites. Herein, unidirectional jute yarn reinforced epoxy composites (JYREC) are prepared using hand lay-up technique. The novelty of the work is to study the effect of linear density varies from 4 to 12 lb/spyndle of jute yarn on the static and dynamic properties of the epoxy composite. The cross-section and microscopic morphologies of composite samples is investigated with the aid of optical microscope and SEM. The results show that with increase in the linear density; tensile strength (45.86 MPa), impact strength (9.41 kJ/m2) and storage modulus (5443.08 MPa) of the JYREC increases up to 8 lb/spyndle jute yarn after that downtrend is observed. The balanced combination of number of yarns in the composite for the same mass loading fraction, twist per inch and tenacity of individual jute yarn is responsible for the resultant properties of the composites. The effectiveness of interfacial attraction between the jute yarn and epoxy resin is conform by the DMA results. The results reveal that JYREC can be engineered for the automobile and building components such as portioning panels applications.
PubDate: 2023-01-23
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- Biohydrogen Production from Enzymatically Digested Cotton Stalks Using
Citrobacter freundii-
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Abstract: Abstract This study presents the production of biohydrogen from acid-treated and enzymatically digested cotton stalks using Citrobacter freundii. Cotton stalks were pre-treated initially using sulphuric acid and hydrolysed using crude cellulase enzyme obtained from Trichoderma reesei. The influence of important parameters such as acid concentration, enzyme dosage, and substrate concentration on the process performance was investigated. A maximum specific hydrogen production rate and hydrogen yield of 126 ml/g of VSS day and 63.8 ml/g cotton waste, respectively, were obtained. The end products formed, and their impact on final pH was also analysed. The morphological changes occurred in cotton stalks after the pre-treatment was analysed using SEM images. The experimental data obtained were fitted with suitable kinetic models to obtain further inferences.
PubDate: 2023-01-16
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- Cathodoluminescence Studies of Europium, Dysprosium and Eu, Dy Co-doped
YVO4 Nanophosphor-
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Abstract: Abstract Rare earth-doped materials have attracted lot of wide range of cathodoluminescence applications. In this paper, the authors reported the YVO4:3%Eu, 7%Dy-doped and YVO4:5%Dy, 5%Eu codoped samples are synthesized via co-precipitation method. The prepared samples are characterized by transmission electron microscopy and cathodoluminescence techniques. The Eu-YVO4TEM micrograph reveals maize-like nanoparticles. The CL spectrum of YVO4:3%Eu shows strong red peak at 619 nm due to 5D0 → 7F2 the hyper sensitive transition. The CL spectrum of YVO4:7%Dy shows a strong yellow peak at 575 nm due to 4F9/2 → 6H13/2 the hyper sensitive transition. The codoping of YVO4:5%Dy,5%Eu shows strong blue, red and yellow colors with comparable intensity. The calculated CIE x and y (0.318, 0.334) coordinates lie in the white region. The CCT value of YVO4:7%Dy indicates 6178 k, which is very close to the agreed standard daylight. These experimental results show that phosphor can be a strong potential candidate for solid-state lighting and display applications.
PubDate: 2023-01-10
DOI: 10.1007/s40034-022-00260-6
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- Human Factor Analysis of Textile Industry Workers Using Various Ergonomic
Assessment Tools-
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Abstract: Abstract Ergonomic concerns which include musculoskeletal disorders, cumulative trauma disorders, repetitive strain injuries and repetitive motion injuries prevail as a crucial mode of occupational ill health in the textile industry. Musculoskeletal disorders (MSDs) are major discomfort caused by manual material handling (MMH) resulting in back pain, numbness, nervousness and other functioning problems related to the bone and nervous system. This study aims to identify the actual and potential hazards in the processes like lifting, pushing, pulling, repetitiveness, bending, awkward posture, heat stress, and contact stress involved in the MMH operations in the textile industry and conduct an ergonomic assessment using the various tools like NIOSH (National institute for occupational safety and health) lifting equation (LI), Rapid upper limb assessment (RULA), Rodgers muscle fatigue analysis, Strain index form (SI), 3D Static Strength Prediction Program (3DSSPP), with heartbeat variability, volume of oxygen intake, and calorie consumption of the worker. Identifying and controlling the manual MSDs of the workers in the workplace will lead to an increase in the production rate of the organization and create stress and risk-free atmosphere for workers. According to the results obtained, the risk level of materials’ shifting from tray to examination table at the examination and packing section in industry was found high (LI > 3, RULA score = 6), whereas the risk in the shifting of materials from trolley to tray was moderate (LI = 1 to 3, RULA score > 6). NIOSH and RULA showed almost same responses, but the SI and Rodgers muscle fatigue analysis showed little bit severe than NIOSH and RULA. The heart rate of the persons, who involved in bale unloading, was measured as a range from 120–140 Bpm (heavy work posture > 100 Bpm). 3DSSPP software results showed that a severe force affected the knee and backbone of the workers during the bale handling.
PubDate: 2023-01-05
DOI: 10.1007/s40034-022-00255-3
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- Investigating the Effect of Compression Ratio on Operating Characteristics
of Compression Ignition Engine Fueled with Diesel—Ricebran
Biodiesel—n-Butanol Additive Blends-
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Abstract: Abstract The rapid growth in industrialization, environmental pollution, and diminution of fossil fuels are the significant aspects that encourage researchers to seek alternative renewable fuels. The study aimed to examine the influence of the compression ratio on compression-ignition engine tested with rice-bran biodiesel and n-butanol additive. An investigation has been carried out for various compression ratios under the full load condition for fixed injection timing 30° before the top dead center. The experimental result indicates that the engine torque increases with the compression ratio for all biodiesel blends. The brake-thermal efficiency shows an increasing trend with compression ratio and blends proportion up to the B30n5 blend and a decline for the B40n5 blend. The average decrease in brake-specific fuel consumption was 14% as the compression ratio increased from 16:1 to 19:1, and brake-specific fuel consumption shows an increasing trend with blending proportion. Hydrocarbon and carbon monoxide emissions were reduced by 40% and 15%, respectively. In contrast, carbon dioxide and nitrogen oxide emissions were increased by 10% and 15%, respectively, with an increase in compression ratio from 16:1 to 19:1. High compression ratio results in high heat release and cylinder pressure. The results reveal that the rice-bran biodiesel with n-butanol additives provides comparable performance with diesel and can be used for a diesel engine without modification.
PubDate: 2023-01-02
DOI: 10.1007/s40034-022-00264-2
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- Treatment of Kitchen Wastewater in a Batch Electrochemical Reactor
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Abstract: Abstract The wastewater from commercial kitchens contains fertilizers, colouring agents, pesticides, oils, cleaning liquids, and taste-enhancing additives. These constituents are generally biorefractory in nature. Kitchen wastewater (KW) is disposed of without any proper treatment into the environment in most of the developing countries. Hence, the development of suitable treatment techniques is essential. This study investigates the electrochemical degradation of KW in a batch reactor consisting of titanium coated with mixed metal oxide (RuO2/IrO2) anode and stainless steel cathode. The influence of operating parameters such as current density, electrolyte concentration, electrode distance, pH, and secondary oxidizing agent (H2O2) addition on the COD reduction was investigated and such parameters were optimized by one factor at a time method. The highest COD removal of ~ 99% was obtained at a current density of 0.75 A/dm2, NaCl concentration of 1.5 mg/L, and electrode gap of 1 cm. The ex-situ oxidizing agent, H2O2, addition improved the COD removal. The results indicated that the electrochemical oxidation method is an expedient technique for treating KW.
PubDate: 2022-12-30
DOI: 10.1007/s40034-022-00262-4
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- Comparative Study on Application of Capric Acid and Stearic Acid as
Thermotropic Phase Change Material (PCM) for Imparting Thermo-Regulation
Properties on Cotton Fabric-
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Abstract: Abstract This paper focuses on the application of phase change material (PCM) for improving the thermotropic properties of cotton related to comfort of the wearer. In this present work, two PCMs, i.e., Capric acid (CA) and Stearic acid (SA) were applied by direct application on cotton in the presence of MgCl2 and Hydroxy-Methyl-Poly-Siloxane (HMPS) binder (without micro-encapsulation) and the observed results are analyzed. Direct application of 5% CA on cotton shows that phase changing occurs at 17 and 29 °C for cooling and heating cycle, respectively. Similarly, direct application of 5% SA shows that phase changing occurs at 49 and 60 °C for cooling and heating cycle, respectively. While direct application of 5% CA + 5% SA (1:1 or 50:50) on cotton shows dual phase change to occur both for CA & SA separately, at 17 and 30 °C for CA cooling and heating cycle, respectively, and at 51 and 60 °C for SA cooling and heating cycle, respectively. It indicates that the fabric is suitable for both the lower temperature zone and the relatively higher temperature zone and is also suitable for both winter and summer.
PubDate: 2022-12-28
DOI: 10.1007/s40034-022-00258-0
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- Design and Development of Wound Dressing by Using Commercial Antiseptic
Liquid-
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Abstract: Abstract Modern wound dressings are expensive for the majority of the people of 3rd world countries. There is a possibility to design and develop a proper and low-cost dressing that will have the properties of modern wound dressing. The aim of this research work is to develop a low-cost wound dressing with the properties of an antibacterial, absorbent, non-adherent, and capable to maintain a moist environment around the wound. The commercial antiseptics Dettol and Savlon were applied with different concentrations and M: L ratios on the cotton gauze fabric by pad dry method and the ZOI (zone of inhibition) was evaluated against E. coli. The antibacterial behavior exhibits even after one year. An absorbent layer of cotton fabrics, cotton fiber, and viscous fiber are used to assess their ability to absorb liquid. The absorbency and retention value of the absorbing layers were evaluated in g/g and g/cm2. In a non-adherent layer, the gauze fabric was dip-coated using PVA (poly (vinyl alcohol)) polymer solution using a padding mangle. The peel-off force of PVA-coated fabrics was measured using a gelatin wound exudates model and UTM (universal testing machine). The obtained antibacterial and absorbency results were compared with commercial wound dressing and have shown promising results. The PVA-coated fabric was non-adherent to the wound and maintain a moist environment on the wound surface. So, the developed PVA-coated antibacterial wound dressing with cotton fiber absorbent layer can be used as an alternative to branded wound dressing for the poor people of third world countries.
PubDate: 2022-12-28
DOI: 10.1007/s40034-022-00256-2
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- Comparative Study of Defluoridation of Water Using Green Synthesized
Zirconia Nanoparticles and Zirconia–Graphene Oxide Nanocomposite-
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Abstract: Abstract Fluoride is one of the vital minerals to be present in drinking water. Low fluoride concentrations will help in the prevention of dental decay in human beings. But at high concentrations, it causes various dental and skeletal-related disorders. The maximum allowable limit of fluoride in drinking water is set to 1.5 mg/l by WHO. But due to various natural and anthropogenic sources, the fluoride concentration has exceeded the prescribed limit in various places. Metal oxides have excellent fluoride adsorptive properties and are hence used to remove excess fluoride from water. The objectives of the current study were to prepare zirconium nanoparticles (ZrNPs) using an aqueous concentrate of tulsi leaves and evaluate their efficacy for the defluoridation of water. The next part of the study is to synthesize zirconia and graphene oxide (Zr-GO) nanocomposite and compare its efficacy with green synthesized zirconium nanoparticles for the defluoridation of water. The synthesized zirconium nanoparticles were characterized using XRD, SEM–EDS, and FTIR. Adsorption studies were conducted using ZrNPs and Zr-GO nanocomposite for fluoride removal. Percentage fluoride removal at neutral pH with an adsorbent dosage of 1 g/L and initial fluoride concentration of 16 ppm was 90% for ZrNPs and 94% for Zr-GO.
PubDate: 2022-12-28
DOI: 10.1007/s40034-022-00263-3
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- Isolation of Nanocellulosic Fibrils from Allium cepa L. Skin Biowaste Food
Residues: Extraction and Characterization-
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Abstract: Abstract Biowaste obtained as remains after food processing has remained one of the underutilized sources of value-added products. Extracting valuable constituents from it helps minimize the waste disposal problem along with the added advantage of deriving useful material for various applications. Cellulose nanofiber (CNF) attracted significant attention due to its nanosize, ease of manufacture, low cost, adjustable surface properties, and improved mechanical properties to be extensively applicable in films, coatings, paints, foams and packaging. The study aims to extract CNF from food residues of onion skin using chlorination and alkali extraction processes. The extracted cellulose nanofibers were extensively characterized to determine their structure and properties. The presence of 43.4% of cellulose with lesser content of hemicelluloses (15.1%) and lignin (39.3%) indicated it to be a suitable source for CNF extraction. The purity of the obtained material was assured by indicating the peaks at 2907 cm−1, confirming the presence of stretching vibration of C–H elongation of the –CH2 functional group. Acid hydrolysis treatment of cellulosic microfiber was used to reduce the particle size from 10.61 µm to 100.49 nm, thereby increasing the specific surface area and pore volume from 59.97 to 118.62 m2/g and 0.186 to 0.432 cc/g, respectively. The TGA graph indicated a higher percentage (30%) of CNF content degrading at a higher temperature of 320 °C. TEM images depict that the fibers were in the form of fibrils with very low clusters formation. The obtained nanofiber can be efficiently used as a membrane for gas barrier application and as fillers in biocomposites.
PubDate: 2022-12-28
DOI: 10.1007/s40034-022-00259-z
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- Improving the Quality of Rice Husk Biochar Through Combined Pretreatment
of Rice Husk and Copyrolysis with LDPE-
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Abstract: Abstract In the present work, microwave-assisted alkali pretreatment (MAAP) of rice husk was conducted for partial removal of lignin and hemicellulose. The pretreated rice husk had higher fixed carbon and volatile matter as compared to untreated rice husk (23.49 v/s 13.35% and 73.46 v/s 61.93%), while its ash content was lower than untreated rice husk due to partial removal of lignin and minerals (11.26 v/s 16.85%). TGA analysis showed that MAAP reduced the thermal stability of rice husk and facilitated faster degradation during pyrolysis. The pretreated and untreated rice husks were subjected to copyrolysis at 500 °C in the presence/absence of LDPE to produce four samples of biochars. Raman spectroscopy and XRD results showed that the biochar produced from copyrolysis of pretreated rice husk (by MAAP) and LDPE i) had a more orderly structure and less structural defects as compared to others biochars, ii) FTIR spectra showed the aromatic C–H peaks at 790 cm−1 and iii) SEM results indicated that it exhibited an irregular heterogeneous surface. Thus, the biochar produced through combined process of pretreatment and copyrolysis had superior porous structure, higher fixed carbon content, lower ash content and graphitic stricture than other biochars.
PubDate: 2022-12-28
DOI: 10.1007/s40034-022-00261-5
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- A New Perspective on the Green Strategy of Close Cycle Dissociation of H2S
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Abstract: Abstract Extremely toxic H2S gas is produced in huge quantities across the world as a byproduct of the desulfurization of hydrocarbon fuels. This H2S gas is further converted into sulfur in sulfur recovery units. However, the valuable hydrogen content is lost as water vapour. It emphasizes the importance of proper exploitation of this resource. A continuous two-steps cyclic process for producing H2 and sulfur simultaneously has been derived in this study. The first well-studied photocatalytic step generates hydrogen by water splitting in the presence of sulfide (S2–) and sulfite ( \({\mathrm{SO}}_{3}^{2-})\) , the sacrificial agents. Here, these sacrificial agents are converted into thiosulfate ( \({\mathrm{S}}_{2}{\mathrm{O}}_{3}^{2-}\) ). In the second step, this \({\mathrm{S}}_{2}{\mathrm{O}}_{3}^{2-}\) reacts with hydrogen sulfide (HS–) to form elemental sulfur, along with generation of S2– and \({\mathrm{SO}}_{3}^{2-}\) , which are again reused in the first step. The kinetics of the reaction involved in the second step ( \({\mathrm{HS}}^{-}+ {\mathrm{S}}_{2}{\mathrm{O}}_{3}^{2-}+\mathrm{ O}{\mathrm{H}}^{-} \to \mathrm{S}+{\mathrm{S}}^{2-}+\mathrm{ S}{\mathrm{O}}_{3}^{2-}+ {\mathrm{H}}_{2}\mathrm{O}\) ) were studied in the present work. The reaction was found to be non-elementary with a rate law of \(k{[{\mathrm{HS}}^{-}]}^{1/2}{[{\mathrm{S}}_{2}{\mathrm{O}}_{3}^{2-}]}^{3/2}\) . The observed rate law is of the order of 1.5 with respect to thiosulfate and 0.5 with respect to HS– ions. A reaction mechanism for the second step consistent with the kinetics was also proposed. The rate constant was observed to be \(1.075\times {10}^{10}{\mathrm{e}}^{- 62280/RT}/\mathrm{ M}/\mathrm{s}\) . This new proposed close cycle may simultaneously achieve green and renewable H2 production along with H2S removal.
PubDate: 2022-12-01
DOI: 10.1007/s40034-022-00239-3
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- Research on Post-Press Technology on Fabric Packaging's Interaction Design
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Abstract: Abstract Fabric product packaging not only protects the fabric, but also forms an interactive barrier between people and objects. This article analyzes the interactive design of fabric packaging comprehensively and systematically through post-press processing technology. With the help of printing technology, the interactive design method of fabric packaging is constructed from multiple perspectives such as materials, packaging structure, and visual communication, which provides a new design thinking mode and perspective for the practice of fabric packaging from the perspective of post-press processing.
PubDate: 2022-12-01
DOI: 10.1007/s40034-021-00231-3
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- Mechanical and Tribo-performance Analysis of Linz Donawitz Sludge-Filled
Glass–Epoxy Composites using Taguchi Experimental Design-
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Abstract: Abstract In the ongoing researches, many attempts have been made to produce such a lightweight composite, possesses high hardness, high strength and is more reliable. In this work, the hybrid polymer composite has been fabricated using the industrial particulate waste i.e. Linz Donawitz (LD) sludge (5, 10, 15 and 20 wt%), woven glass fiber as reinforcements and epoxy as a binder matrix. ASTM Standard has been followed to evaluate properties like micro-hardness, flexural strength, tensile strength and compressive strength. The sliding wear response of the newly manufactured polymer matrix composites is estimated using a pin-on-disk sliding wear tester. Sliding wear assessments are prepared in accordance with the experimental design, which is based on Taguchi’s L25 orthogonal array, in order to identify prominent elements influencing wear rate. Scanning electron microscopy (SEM) is carried out to analyze the sliding wear characteristics of the fabricated composites. This investigation shows that with increase in LD sludge content, the micro-hardness, tensile, compressive and flexural strengths of the composites increased significantly in comparison to the glass–epoxy composite. The LD sludge content is observed to be the most weighted control factor that affects the sliding wear rate of the composites followed by sliding velocity. From SEM micrographs it is understandable that with increased sliding velocity and applied load, the polymeric resin softens and results in deeper wear tracks under the presence of low filler content. Whereas in composites with higher filler content swallow wear tracks are observed.
PubDate: 2022-12-01
DOI: 10.1007/s40034-021-00236-y
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- Enhancement in Dye Decolorization and Stain Removal Property of Cotton
Fabric Coated with a Combination of Different TiO2 Forms (Both P-25 and
Anatase TiO2)-
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Abstract: Abstract In this study, an attempt has been made to enhance the dye decolorization efficiency and stain removal property of the treated cotton fabric by using a combination of two different forms of TiO2 (P-25 and anatase TiO2). A novel approach was used to exploit the high catalytic power of P-25 nanoparticles on cotton and at the same time ensuring durability of their deposition. These NPs were introduced in the hydrothermal bath of cotton fabric coated with an amorphous layer of TiO2. During the hydrothermal stage, the P-25 NPs get embedded in the amorphous layer, which itself becomes crystalline and photo-catalytically more active. The treated fabric samples were characterized by XRD, FESEM, EDX, ICP-MS and UV–visible spectroscopic analysis to understand the crystallographic form, surface deposition and UV absorption behavior of the deposited material. It was found that the cotton fabric in which P-25 NPs were applied on TiO2-coated cotton during hydrothermal treatment, exhibited the highest dye decolorization and self-cleaning attributes. The hydrothermal route also imparted reasonable wash durability to deposited P-25 NPs and the thin composite coating of TiO2 of different crystallographic forms can be used repeatedly for the purpose of dye decolorization.
PubDate: 2022-10-06
DOI: 10.1007/s40034-022-00253-5
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- Hydrothermal Treatment for Imparting Wash-Durable UV Protection Property
in Cotton Using Zinc Oxide Nanoparticles-
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Abstract: Abstract In this study, zinc oxide (ZnO) nanoparticles were deposited on cotton fabric to improve its UV protection property. This was carried out by in situ preparation of ZnO on cotton fabric using zinc acetate dihydrate (Zn(CH3COO)2.2H2O) as ZnO precursor. After padding and drying, the fabric impregnated with precursor was subjected to a hydrothermal treatment at 110 °C for a period of 2 h. FESEM images confirmed the deposition of ZnO on fabric in a uniform manner. Energy-dispersive X-ray (EDX) analysis and ICP-MS techniques were used to measure the amount of zinc content deposited on fabric. The prepared fabric samples were tested for the UV protection property using UV–visible spectrophotometer (UV-2000F, labsphere, USA). On the basis of recorded data, UV protection rating of the fabric was carried out as per AATCC 183:2010 standards. The study concludes that the uniformly deposited ZnO nanoparticles on cotton fabric impart a very good UV protection property in the fabric, which is able to sustain its effectiveness even after 5 washes. Other important physical properties like tensile strength, air permeability and whiteness index of the treated fabric was also examined to compare the changes with respect to the untreated fabric. The experimental results show that no considerable change occurred in the physical properties on the fabric after the deposition of ZnO nanoparticles on it.
PubDate: 2022-09-05
DOI: 10.1007/s40034-022-00250-8
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- Tribo-performance Analysis of an Agro-Waste-Filled Epoxy Composites Using
Finite Element Method-
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Abstract: Abstract In this investigation, epoxy composites filled with walnut shell powder (WSP) in different proportions (5, 10 and 15 wt.%) are prepared by solution casting technique. Dry sliding wear tests are carried out using pin-on-disc test rig as per ASTM standards. The wear tests are planned as per the design of the experiments, and the effect of different input parameters on the wear response are analysed by the face-centred central composite design of response surface methodology (RSM). A mathematical model is proposed by response surface methodology (RSM) to evaluate the specific wear rate (SWR) of the composites, and the adequacy of the model is checked by analysis of variance (ANOVA). Commercially available finite element method (FEM) software ANSYS 2019 R2 is also used to predict the SWR of WSP/epoxy composites. The predicted wear rates of the composites are compared with the experimental results. It is found that among all the factors, filler content affects the wear behaviour of composites most significantly and the addition of the WSP as filler improves the wear resistance of neat epoxy.
PubDate: 2022-08-16
DOI: 10.1007/s40034-022-00243-7
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- Yarn Hairiness Prediction by Generalized Regression Neural Network based
on Harris Hawk Optimization-
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Abstract: Abstract Yarn hairiness is an important indicator of yarn quality. It affects not only the quality of yarn but also the woven and knitted performance of yarn and the quality of the fabric produced. The prediction of yarn hairiness index can effectively prevent errors in produced fabrics, but yarn hairiness prediction is a complex nonlinear problem, and the use of a simple prediction model cannot meet the need for yarn hairiness prediction accuracy. Therefore, the main objective of this study is to introduce a new metaheuristic optimization method, namely Harris Hawk Optimization, to improve the accuracy of yarn hairiness prediction by generalized regression neural network. The smoothing factor in the generalized regression neural network is optimally selected by Harris Hawk Optimization, which in turn improves the accuracy of prediction. The experimental results show that the generalized neural network using Harris Hawk Optimization has very high accuracy in predicting yarn hairiness. In this regard, its root mean square error and mean absolute error criteria are 0.05568 and 0.03872, respectively.
PubDate: 2022-07-26
DOI: 10.1007/s40034-022-00246-4
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