Artykuły w czasopismach: „Fibre reinforced epoxy composites”

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Prabakaran, E., D. Vasanth Kumar, A. Jaganathan, P. Ashok Kumar i M. Veeerapathran. "Analysis on Fiber Reinforced Epoxy Concrete Composite for Industrial Flooring – A Review". Journal of Physics: Conference Series 2272, nr 1 (1.07.2022): 012026. http://dx.doi.org/10.1088/1742-6596/2272/1/012026.

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Abstract Fiber composites are the having an good scope in construction industry as they are light in weight, durable, economic, and resistant to temperatures. Many researchers concentrate on the composites for the industrial flooring with the fibers. The main objective of this paper is to review the fiber reinforced epoxy for industrial flooring. Epoxy can be used as flooring elements in industries as they deliver good performance. Since, natural and synthetic fibres can be used with filler matrices, which are very much cheaper than the conventional steel fibres reinforced composite concrete flooring and other type of composites here fibre is considered for reinforcing with epoxy or polymer concrete filler matrix. Fibre-polymer and fibre-concrete composite properties has been reviewed for testing procedure for flexural test, bending test, tensile test and based on the results, it is clear that the fibre-polymer concrete composite, which has good mechanical properties and performance than the mentioned composites, can be made for industrial flooring

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Vedanarayanan, V., B. S. Praveen Kumar, M. S. Karuna, A. Jayanthi, K. V. Pradeep Kumar, A. Radha, G. Ramkumar i David Christopher. "Experimental Investigation on Mechanical Behaviour of Kevlar and Ramie Fibre Reinforced Epoxy Composites". Journal of Nanomaterials 2022 (2.02.2022): 1–10. http://dx.doi.org/10.1155/2022/8802222.

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Natural fibre composites have been replacing synthetic fibre composites in practical applications for the last several years because of the features such as low densities, low weight, relatively inexpensive, recyclability, and excellent mechanical qualities unique to the substance. Thus, the current study examines how Kevlar/Ramie/Nano SiC hybrid fibre reinforced composites are made and their mechanical properties, and it compares them to those made using a single natural fibre reinforced composite. It was found that natural fibre composite densities and hardness were all within acceptable ranges by performing composites’ tensile and flexural strength tests. The hand-lay-up technique used ASTM standards samples to construct the composite specimens with various fibre weight percentages. Increase in mechanical characteristics was achieved by adding the glass and the epoxy fibres into the epoxy matrix. The hybrid composite’s performance is promising, especially those of individual fibre-reinforced composites.

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Kazi, Atik Mubarak, i Ramasastry DVA. "Characterization of continuous Hibiscus sabdariffa fibre reinforced epoxy composites". Polymers and Polymer Composites 30 (styczeń 2022): 096739112110609. http://dx.doi.org/10.1177/09673911211060957.

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The influence of fibre orientation on physical, mechanical and dynamic mechanical properties of Hibiscus sabdariffa fibre composites has been studied. The composites with longitudinal (0°), transverse (90°) and inclined (45°) fibre orientation were prepared using the hand layup technique. ASTM standards were used for characterization of continuous Hibiscus sabdariffa fibre composites. The composite with longitudinally placed fibres yields improved mechanical characteristics. The addition of longitudinal (0°) oriented continuous Hibiscus sabdariffa fibres to the epoxy enhances tensile strength by 460%, flexural strength by 160% and impact strength by 603% compared to neat epoxy. The longitudinal (0°) fibre oriented composite offers higher resistance to water absorption and thickness swelling compared to other types of composites. All continuous Hibiscus sabdariffa fibre epoxy composites possess an improved storage modulus than the neat epoxy resin. The glass transition temperature of continuous Hibiscus sabdariffa fibre composites is 8%–31% lower than that of neat epoxy. Scanning electron microscopy (SEM) images confirm the existence of voids in the matrix, fibre pullout and crack propagation near the fibre bundle, which indicates the stress transfer between fibre and matrix is non-uniform.

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Prasad, M. M., N. Manikandan i S. M. Sutharsan. "Investigation on mechanical properties of reinforced glass fibre/epoxy with hybrid nano composites". Digest Journal of Nanomaterials and Biostructures 16, nr 2 (2021): 455–69. http://dx.doi.org/10.15251/djnb.2021.162.455.

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In this study the experimental investigation of mechanical behaviour of Multi-Walled Carbon nanotubes (MWCNTs) and Aluminium Oxide (Al2O3) reinforced with EGlass/Epoxy nanocomposites at 0.5%, 1.5% and 2.0% of weight rated with 225 GSM, 300 GSM and 450 GSM glass fibres were studied. Test specimens were prepared at the standardof ASTM D638 for tensile specimen ASTM D256 for impact specimen. Testspecimens were prepared at the ratio of MWCNTs: Al2O3 is 1:4. 1.5 wt. % of MultiWalled CNTs filledE-Glass/Epoxy nanocomposites showed improved mechanical properties than glass fiber reinforced epoxy composites.450 GSM reinforced glass fiber epoxy composites containing 1.5wt. % of MWCNTs improved 36.27 % of higher tensile value and 28.57 % of impact value than the glass fibre reinforced epoxy composites. 225 and 300 GSM reinforced glass fibre epoxy composites with 1.5 wt. % of MWCNTs composites also has improved tensile and impact value than glass fibre reinforced epoxy composites. But, overall 450 GSM reinforced fibre nanocomposites showed enhanced mechanical properties than the other GSM reinforced nanocomposites. This proves MultiWalled Carbon Nanotubes is a successful reinforcement for E-Glass/Epoxy matrix and it improves its properties and performance.

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Zhao, Guanghui, Jijia Zhong i Y. X. Zhang. "Research Progress on Mechanical Properties of Short Carbon Fibre/Epoxy Composites". Recent Patents on Mechanical Engineering 12, nr 1 (20.02.2019): 3–13. http://dx.doi.org/10.2174/2212797612666181213091233.

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Background: Short carbon fibre reinforced epoxy composites have many advantages such as high strength-to-weight ratio, corrosion resistance, low cost, short fabrication time and easy manufacturing. Researches on the mechanical performance of the composites are mainly carried out by means of experimental techniques and numerical calculation. Objective: The study aims to report the latest progress in the studies of mechanical properties of short carbon fibre reinforced epoxy composites. Methods: Based on recently published patents and journal papers, the experimental studies of short carbon fibre reinforced epoxy composites are reviewed and the effects of short carbon fibre on the mechanical properties of the composites are discussed. Numerical studies using representative volume element in simulating macroscopic mechanical properties of the short fibre reinforced composites are also reviewed. Finally, future research of short carbon fibre reinforced epoxy composites is proposed. Results: Experimental techniques, experimental results and numerical simulating methods are discussed. Conclusion: Mechanical properties of epoxy can be improved by adding short carbon fibres. Fiber surface treatment and matrix modification are effective in enhancing interfacial adhesion between fiber and matrix, and as a result, better mechanical performance is achieved. Compared to the studies on equivalent mechanical properties of the composites, researches on the micro-mechanism of interaction between fiber and matrix are still in infancy due to the complexity of both the internal structure and reinforcing mechanism.

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Hernandez-Estrada, Albert, Jörg Müssig i Mark Hughes. "The impact of fibre processing on the mechanical properties of epoxy matrix composites and wood-based particleboard reinforced with hemp (Cannabis sativa L.) fibre". Journal of Materials Science 57, nr 3 (styczeń 2022): 1738–54. http://dx.doi.org/10.1007/s10853-021-06629-z.

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AbstractThis work investigated the impact that the processing of hemp (C. sativa L.) fibre has on the mechanical properties of unidirectional fibre-reinforced epoxy resin composites loaded in axial tension, and particleboard reinforced with aligned fibre bundles applied to one surface of the panel. For this purpose, mechanically processed (decorticated) and un-processed hemp fibre bundles, obtained from retted and un-retted hemp stems, were utilised. The results clearly show the impact of fibre reinforcement in both materials. Epoxy composites reinforced with processed hemp exhibited 3.3 times greater tensile strength when compared to the un-reinforced polymer, while for the particleboards, the bending strength obtained in those reinforced with processed hemp was 1.7 times greater than the un-reinforced particleboards. Moreover, whether the fibre bundles were processed or un-processed also affected the mechanical performance, especially in the epoxy composites. For example, the un-processed fibre-reinforced epoxy composites exhibited 49% greater work of fracture than the composites reinforced with processed hemp. In the wood-based particleboards, however, the difference was not significant. Additionally, observations of the fracture zone of the specimens showed different failure characteristics depending on whether the composites were reinforced with processed or un-processed hemp. Both epoxy composites and wood-based particleboards reinforced with un-processed hemp exhibited fibre reinforcement apparently able to retain structural integrity after the composite’s failure. On the other hand, when processed hemp was used as reinforcement, fibre bundles showed a clear cut across the specimen, with the fibre-reinforcement mainly failing at the composite's fracture zone.

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K V, Ambareesh. "Moisture Absorption Studies of COIR and Sisal Short Fiber Reinforced Polymer Composites". International Journal for Research in Applied Science and Engineering Technology 9, nr 9 (30.09.2021): 116–27. http://dx.doi.org/10.22214/ijraset.2021.37928.

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Abstract: Easy availability of natural fibre, low cost and ease of manufacturing have urged the attention of researchers towards the possibility of reinforcement of natural fiber to improve their mechanical properties and study the extent to which they satisfy the required specifications of good reinforced polymer composite for industrial and structural applications. Polymer composites made of natural fiber is susceptible for moisture. Moisture absorption in such composites mainly because of hydrophilic nature of natural fibers. Water uptake of natural fiber reinforced composites has an effect on different. Lot of researchers prepared the natural fiber reinforced composites without conducting water absorption tests; hence it is the potential area to investigate the behavior of the composites with different moisture absorption. In this research the experimental sequence and the materials are used for the study of coir and Sisal short fiber reinforced epoxy matrix composites. The coir and Sisal short fibers are made into the short fibers with 10 mm x 10 mm x 5 mm size. The Epoxy Resin-LY556(Di glycidyl ether of bi phenol) and Hardner-HYD951 (Tetra mine), the water absorption behaviors are analyzed in the coir and Sisal short fibers reinforced epoxy composites. The water absorption behaviors of the epoxy composites reinforced with the coir and sisal short fibers with 25, 30 and 35wt% were analyzed at three different water environments, such as sea water, distilled water, and tap water for 12 days at room temperature. It was observed that the composites show the high level of the water absorption percentage at sea water immersion as compared to the other water environments. Due to the water absorption, the mechanical properties of macro particle/epoxy composites were decreased at all weight percentages. Keywords: Natural fibre, Moisture absorption, Coir and sisal short fibre, Reinforced polymer composites, Water absorption behaviour Polymer matrix composite (Epoxy resin) using Coir and sisal short fibre and to study its moisture absorption behaviour

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Davindrabrabu, Mathivanan, Parlaungan Siregar Januar, Bachtiar Dandi, Mat Rejab Mohd Ruzaimi i Tezara Cionita. "Effect of Fibre Loading on the Flexural Properties of Natural Fibre Reinforced Polymer Composites". Applied Mechanics and Materials 695 (listopad 2014): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amm.695.85.

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The use of pineapple leaf fibres as reinforcement in plastics had increased rapidly in past few years. Thus this project was conducted to determine and compare the flexural strength of pure epoxy and pineapple leaf fibres reinforced epoxy. The natural fibres were mixed with epoxy and hardener by weight percentage fibre content. The process employed to fabricate the specimens was hand lay-up and the natural fibres was oriented randomly. The dimensions of the specimens for flexure test were based on ASTM D790 respectively. The results obtained shows that 15% PALF reinforced epoxy composite achieved the highest flexural strength among the natural fibers reinforced epoxy composites.

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Raghu, M. J., i Govardhan Goud. "Tribological Properties of Calotropis Procera Natural Fiber Reinforced Hybrid Epoxy Composites". Applied Mechanics and Materials 895 (listopad 2019): 45–51. http://dx.doi.org/10.4028/www.scientific.net/amm.895.45.

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Natural fibers are widely used for reinforcement in polymer composite materials and proved to be effectively replacing synthetic fiber reinforced polymer composites to some extent in applications like domestic, automotive and lower end aerospace parts. The natural fiber reinforced composites are environment friendly, have high strength to weight ratio as well as specific strengths comparable with synthetic glass fiber reinforced composites. In the present work, hybrid epoxy composites were fabricated using calotropis procera and glass fibers as reinforcement by hand lay-up method. The fibre reinforcement in epoxy matrix was maintained at 20 wt%. In 20 wt% reinforcement of fibre, the content of calotropis procera and glass fibre were varied from 5, 10, 15 and 20 wt%. The dry sliding wear test as per ASTM G99 and three body abrasive wear test as per ASTM G65 were conducted to find the tribological properties by varying speed, load, distance and abrasive size. The hybrid composite having 5 wt% calotropis procera and 15 wt% glass fibre showed less wear loss in hybrid composites both in sliding wear test as well as in abrasive wear test which is comparable with 20 wt% glass fibre reinforced epoxy composite which marked very low wear loss. The SEM analysis was carried out to study the worn out surfaces of dry sliding wear test and three body abrasive wear test specimens.

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Prasad, Lalta, Shiv Kumar, Raj Vardhan Patel, Anshul Yadav, Virendra Kumar i Jerzy Winczek. "Physical and Mechanical Behaviour of Sugarcane Bagasse Fibre-Reinforced Epoxy Bio-Composites". Materials 13, nr 23 (27.11.2020): 5387. http://dx.doi.org/10.3390/ma13235387.

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In this study, experiments are performed to study the physical and mechanical behaviour of chemically-treated sugarcane bagasse fibre-reinforced epoxy composite. The effect of alkali treatment, fibre varieties, and fibre lengths on physical and mechanical properties of the composites is studied. To study the morphology of the fractured composites, scanning electron microscopy is performed over fractured composite surfaces. The study found that the variety and lengths of fibres significantly influence the physical and mechanical properties of the sugarcane bagasse-reinforced composites. From the wear study, it is found that the composite fabricated from smaller fibre lengths show low wear. The chemically-treated bagasse-reinforced composites fabricated in this study show good physical and mechanical properties and are, therefore, proposed for use in applications in place of conventional natural fibres.

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Saw, Sudhir Kumar, i Chandan Datta. "Thermomechanical properties of jute/bagasse hybrid reinforced epoxy thermoset composites". BioResources 4, nr 4 (14.09.2009): 1455–76. http://dx.doi.org/10.15376/biores.4.4.1455-1476.

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Natural fibres are partly replacing currently used synthetic fibres as reinforcement for polymer composites. Jute fibre bundles were high-cellulose-content modified by alkali treatment, while the bagasse fibre bundles were modified by creating quinones in the lignin portions of fibre surfaces and reacting them with furfuryl alcohol (FA) to increase their adhesiveness. The effects of different fibre bundle loading and modification of bagasse fibre surfaces in hybrid fibre reinforced epoxy composites have been studied. The role of fibre/matrix interactions in chemically modified hybrid composites were investigated using Differential Scanning Calorimeter, Differential Thermo Gravimetry, and a Universal Tensile Machine and compared with those of unmodified bagasse fibre bundles incorporated with modified jute fibre bundles reinforced hybrid composites. Fibre surface modification reduced the hydrophilicity of fibre bundles, and significantly increased mechanical properties of hybrid composites were observed in conjunction with SEM images. The SEM analysis of the fibre and the composite fractured surfaces have confirmed the FA grafting and shown a better compatibility at the interface between chemically modified fibre bundles and epoxy resin. This paper incorporates interesting results of thermomechanical properties and evaluation of fibre/matrix interactions.

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Abdullah, Abdul Hakim, Siti Khadijah Alias, Syazuan Abdul Latip i Syarifah Yunus. "Storage Modulus Analysis of Kenaf Fibre Reinforced Epoxy Composites". Applied Mechanics and Materials 393 (wrzesień 2013): 167–70. http://dx.doi.org/10.4028/www.scientific.net/amm.393.167.

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This article presents the storage modulus analysis of kenaf fibre composites that reinforced by two different epoxy matrix systems, named epoxy A and epoxy B. These epoxies are commercially available in Malaysia and been used as a polymer matrix in composite research. Composites were made from hand lay out technique and undergo storage modulus evaluation by using dynamic mechanical analysis (DMA). Fibre content ratios were found to affect the storage capacity in both reinforced epoxy system. However, the addition of 45% kenaf fibre volume ratios reinforced into Epoxy A composites exhibits only week improvement as compared to its rival. The possibility of causes might be attributed to the week interfacial between fibre and matrix.

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Kumar, Sanjeev, Lalta Prasad, Vinay Kumar Patel, Virendra Kumar, Anil Kumar, Anshul Yadav i Jerzy Winczek. "Physical and Mechanical Properties of Natural Leaf Fiber-Reinforced Epoxy Polyester Composites". Polymers 13, nr 9 (22.04.2021): 1369. http://dx.doi.org/10.3390/polym13091369.

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In recent times, demand for light weight and high strength materials fabricated from natural fibres has increased tremendously. The use of natural fibres has rapidly increased due to their high availability, low density, and renewable capability over synthetic fibre. Natural leaf fibres are easy to extract from the plant (retting process is easy), which offers high stiffness, less energy consumption, less health risk, environment friendly, and better insulation property than the synthetic fibre-based composite. Natural leaf fibre composites have low machining wear with low cost and excellent performance in engineering applications, and hence established as superior reinforcing materials compared to other plant fibres. In this review, the physical and mechanical properties of different natural leaf fibre-based composites are addressed. The influences of fibre loading and fibre length on mechanical properties are discussed for different matrices-based composite materials. The surface modifications of natural fibre also play a crucial role in improving physical and mechanical properties regarding composite materials due to improved fibre/matrix adhesion. Additionally, the present review also deals with the effect of silane-treated leaf fibre-reinforced thermoset composite, which play an important role in enhancing the mechanical and physical properties of the composites.

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Fernando, Gerard F., Balkarransingh Degamber, Liwei Wang, Crispin Doyle, Guillaume Kister i Brian Ralph. "Self-Sensing Fibre Reinforced Composites". Advanced Composites Letters 13, nr 2 (marzec 2004): 096369350401300. http://dx.doi.org/10.1177/096369350401300203.

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This paper reports for the first time a demonstration of chemical process monitoring of conventional glass fibre reinforced composites where the reinforcing fibres themselves act as the optical fibre sensors. These fibres were used to study in real-time, the rate of chemical reaction between an epoxy resin and an amine hardener. These reinforcing fibre light guides were also subsequently used to study, in situ, the fracture sequence of the reinforcing fibres. This was achieved by imaging one end of the fibre bundle whilst illuminating the opposite end.

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Obiukwu, Osita, i John Igboekwe. "Abrasion and Physical Properties of Rattan Cane (Calamus deeratus) Fibre Based Epoxy Composites". International Journal of Engineering and Technologies 19 (grudzień 2020): 23–31. http://dx.doi.org/10.18052/www.scipress.com/ijet.19.23.

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The effects of fibre content (5–30 wt%) and fibre treatment on abrasion, water absorption, specific gravity, and density properties of epoxy/rattan cane fibre composites were studied. Epoxy resin reinforced with the alkaline treated rattan cane fibre fibres was produced by compression technique in predetermined proportions. Abrasion and physical properties tests were carried out on the developed composites. The results showed that the reinforced composite samples have better enhancement in all the properties tested than the unreinforced control sample. Least Water Absorption (WA) value of 1.4 % were obtained within the 1 week and 2 week for the reinforced samples. Samples reinforced with 10 wt. % rattan fibres had the highest abrasion resistance, while the sample with 5 wt.% rattan fibre addition had the best water absorption resistance. The products of this research could find applications in automotive fields where exposure to moisture and wear are encountered.

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Obiukwu, Osita, i John Igboekwe. "Abrasion and Physical Properties of Rattan Cane (<i>Calamus deeratus</i>) Fibre Based Epoxy Composites". International Journal of Engineering and Technologies 19 (7.12.2020): 23–31. http://dx.doi.org/10.56431/p-bnbek1.

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The effects of fibre content (5–30 wt%) and fibre treatment on abrasion, water absorption, specific gravity, and density properties of epoxy/rattan cane fibre composites were studied. Epoxy resin reinforced with the alkaline treated rattan cane fibre fibres was produced by compression technique in predetermined proportions. Abrasion and physical properties tests were carried out on the developed composites. The results showed that the reinforced composite samples have better enhancement in all the properties tested than the unreinforced control sample. Least Water Absorption (WA) value of 1.4 % were obtained within the 1 week and 2 week for the reinforced samples. Samples reinforced with 10 wt. % rattan fibres had the highest abrasion resistance, while the sample with 5 wt.% rattan fibre addition had the best water absorption resistance. The products of this research could find applications in automotive fields where exposure to moisture and wear are encountered.

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Debnath, Sujan, i Abdul Hamid Abdullah. "Mechanical Performance of Cockle Shell Particles (CSP) and Oil Palm Fibre (OPF) Reinforced Epoxy Composite". International Journal of Engineering Materials and Manufacture 2, nr 3 (14.09.2017): 58–66. http://dx.doi.org/10.26776/ijemm.02.03.2017.03.

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The effects of particle sizes (range 1, 2 and 3) and particle loading (5wt%, 10wt%, 15wt%, 20wt% and 25wt %) on the mechanical properties (tensile and flexural properties), water absorption properties and morphology analysis (optical microscope) of epoxy composites reinforced with cockle shell particles and hybrid epoxy based composite reinforced with cockle shell particles and oil palm fibres were investigated. Pre-chemical treatment of alkaline solution (NaOH) with 5% concentration was used to treat the oil palm fibre prior to the fabrication of composite. Based on the findings, the composite with smaller size and lower loading of cockle shell particle showed higher improvement in mechanical properties. Meanwhile, the hybrid epoxy based composite reinforced with smaller size of cockle shell particle and oil palm fibre showed enhancement in mechanical properties. For water absorption analysis, cockle shell particle-epoxy composites with lower particle loading showed less water uptake.

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Quadflieg, Till, Vijay K. Srivastava, Thomas Gries i Shantanu Bhatt. "Mechanical Performance of Hybrid Graphene Nanoplates, Fly-Ash, Cement, Silica, and Sand Particles Filled Cross-Ply Carbon Fibre Woven Fabric Reinforced Epoxy Polymer Composites Beam and Column". Journal of Materials Science Research 12, nr 1 (10.04.2023): 22. http://dx.doi.org/10.5539/jmsr.v12n1p22.

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The main goal of this study is to reduce the brittleness of a fibre-reinforced cement base structure when exposed to the effects of graphene nanoplates, fly ash, silica, sand, and cement fillers to better understand the effect of hybrid nano/micro particle fillers on the mechanical performance of cross-ply carbon fibre reinforced epoxy resin composites. A three-point bending test through the width was used to measure flexural strength. The impact tests Izod at low impact velocity and Charpy through the thickness were used to determine the dynamic fracture strengths of pre-cracked and non-cracked composite samples. Also, the compressive test method was used to measure the compressive strength of hybrid particles and short glass fibre-reinforced epoxy resin composite square and circular columns. The results show compressive strength and flexural strength. Izod impact energy, Charpy impact energy, and dynamic fracture toughness of hybrid nano/microparticle-filled fibre composites have higher values than virgin fibre composites due to the influence of graphene nanoparticles and perfect interface bonding between two dissimilar molecules of nano and microparticles, which improve the fracture toughness and absorb impact energy. Overall, the results indicate that molecules of nano/microparticle-filled carbon fibre and glass fibre-reinforced epoxy resin composites can be used in aggressive environments because of the improved mechanical properties in comparison to the virgin fibre composites. In addition, SEM micrographs clearly indicate that nano- and microparticles are resistant crack propagation and deboned of matrix fibres.

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Kumar, Balakrishnan Rajesh, Masilamany Santha Alphin, Vajjiram Santhanam i Vimalanathan Palanikumar. "Mechanical, Vibration and Visco-elastic Behavior of Abelmoschus Esculentus Fiber Reinforced Epoxy Composite". Materiale Plastice 59, nr 4 (1.01.2001): 70–81. http://dx.doi.org/10.37358/mp.22.4.5626.

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Nowadays, research is focused on using bio-degradable natural fibre-based composites for secondary structural members. The present study aims to investigate the effect of fiber loading and surface treatment on the mechanical, vibrational, and viscoelastic properties of short, randomly oriented Abelmoschus Esculentus fiber-reinforced epoxy composites. The composite was fabricated by reinforcing various weight percentages of Abelmoschus Esculentus in epoxy resin by hand lay-up method and tested for tensile, flexural, and impact tests as per ASTM standards. Further, the fibres are treated with alkali to evaluate their effect on the mechanical properties of composites. The analysis indicated that fiber loading had a significant impact on the mechanical properties of the composite, with the maximum tensile strength of 27.8 MPa being obtained at a fiber loading of 20 volume %. The surface treatment of the fiber with 2% NaOH solution increased the tensile strength by 34%. All composite specimens were subjected to vibration analysis. The results showed that composite reinforced with 20% fibre loading provided superior mechanical and damping qualities. Dynamic Mechanical Analysis revealed that the Storage Modulus (E�) improved with the addition of Abelmoschus Esculentus fiiber.

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Swaroop, Dasagrandhi Veda. "Analysis of Mechanical Properties of Banana-Jute Hybrid Fiber-reinforced Epoxy composite by varying Stacking sequence". International Journal for Research in Applied Science and Engineering Technology 10, nr 3 (31.03.2022): 429–38. http://dx.doi.org/10.22214/ijraset.2022.40581.

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Abstract: Nowadays, the study on natural fibers has gradually increased because of the environmental concerns due to usage of synthetic fibers. The natural fibres properties such as biodegradability, availability, strength made them a potential replacement of synthetic fibers. Hybrid Fibre reinforced composites are the composites that comprises two or more different fibres. The banana and jute fibres are selected because of their strength, moisture absorption capacity , availability. The epoxy resin is selected as a matrix to bind the fibres and to transfer a uniform load. Banana-Jute Hybrid fibre reinforced epoxy composite with different stacking sequences (BJB, BBJ, JBJ,JJB where B=Banana Fibre, J=Jute Fibre) will be fabricated by Hand-layup process for analyzing Shore hardness of composite samples and the same composite samples will be modelled in ANSYS to analyse the Flexural properties, tensile properties and Impact strength of composite samples. Keywords: ANSYS, Hand-layup, Shore Hardness, Flexural properties, Tensile properties.

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Kandemir, Ali, Marco L. Longana, Tulio H. Panzera, Gilberto G. del Pino, Ian Hamerton i Stephen J. Eichhorn. "Natural Fibres as a Sustainable Reinforcement Constituent in Aligned Discontinuous Polymer Composites Produced by the HiPerDiF Method". Materials 14, nr 8 (10.04.2021): 1885. http://dx.doi.org/10.3390/ma14081885.

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Sustainable fibre reinforced polymer composites have drawn significant attention in many industrial sectors as a means for overcoming issues with end-of-life regulations and other environmental concerns. Plant based natural fibres are considered to be the most suitable reinforcement for sustainable composites since they are typically from renewable resources, are cheap, and are biodegradable. In this study, a number of plant based natural fibres-curaua, flax, and jute fibres-are used to reinforce epoxy, poly(lactic acid) (PLA), and polypropylene (PP) matrices to form aligned discontinuous natural fibre reinforced composites (ADNFRC). The novel HiPerDiF (high performance discontinuous fibre) method is used to produce high performance ADNFRC. The tensile mechanical, fracture, and physical (density, porosity, water absorption, and fibre volume fraction) properties of these composites are reported. In terms of stiffness, epoxy and PP ADNFRC exhibit similar properties, but epoxy ADNFRC shows increased strength compared to PP ADNFRC. It was found that PLA ADNFRC had the poorest mechanical performance of the composites tested, due principally to the limits of the polymer matrix. Moreover, curaua, flax (French origin), and jute fibres are found to be promising reinforcements owing to their mechanical performance in epoxy and PP ADNFRC. However, only flax fibre with desirable fibre length is considered to be the best reinforcement constituent for future sustainable ADNFRC studies in terms of mechanical performance and current availability on the market, particularly for the UK and EU.

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Edafiadhe, E. D., i N. E. Nwanze. "A comparative study on the tensile properties and environmental suitability of glass fibre/raffia palm/plantain fibres hybridized epoxy bio-composites". Journal of Engineering Innovations and Applications 1, nr 2 (30.08.2022): 32–39. http://dx.doi.org/10.31248/jeia2022.023.

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Bio-composites have been widely introduced as sustainable alternative engineering materials, due to their environmental friendliness. The aim of this study was to assess the variations in the mechanical and biodegradation behaviours of natural fibres (raffia palm and plantain fibres) reinforced composites, and compared them to artificial fibres composites. Bio-composite samples produced through hybridization of glass fibre, plantain fibre and raffia palm fibre, were tested (mechanical and biodegradability tests) in accordance with ASTM International accepted procedures. The biodegradability results indicated that, the tensile strength and tensile elongation for all composites decreased non-linearly during the 28 days of soil treatment. Also, it was observed that the mechanical properties of the natural fibres reinforced bio-composites declined faster, when compared to the synthetic fibre reinforced composite. The bio-composite produced solely with natural fibres (PFRF) had the highest tensile strength reduction rate (43.86%), while the composite produced with solely synthetic fibre (glass fibre) had the minimum tensile strength declining rate (2.18%), at the end of the soil treatment. Regarding the tensile elongation, the PFRF bio-composite had the highest decrement (89.98%), when compared to the 53.28 and 45.92% recorded in the CFPF and CFRF reinforced bio-composites, respectively. With respect to weight loss, it was observed that the weight loss was gradual during the initial period of the soil treatment. However, the bio-composite with the two natural fibres (PFRF) exhibited more pronounced weight loss (46.4%); while the sample with the synthesized fibre (CF) exhibited more resistance to biodegradation (6.23% weight loss). The study results demonstrated that plantain fibre and raffia fibre are environmentally friendly, and composites produced from them developed appreciable tensile properties; hence, they can be used to produce composite for automobile parts.

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P, Balaji. "An Experimental Investigation of Glass Fibre with Prosopis Juliflora as Reinforced Polymer Composites". International Journal for Research in Applied Science and Engineering Technology 10, nr 2 (28.02.2022): 638–43. http://dx.doi.org/10.22214/ijraset.2022.40331.

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Abstract: The main objective of this project is to investigate the mechanical properties of glass fibre reinforced with prosopis juliflora ash as reinforced polymer composite .(Glass fibre + Prosopis Juliflora ash) Composite is fabricated by adding prosopis julifora ash powder of 10% weight of glass fibre. In this research, fibre reinforced polymer were prepared with glass fibre and prosopis juliflora ash of glass fibre thickness 4-5mm. The resins used in this study are epoxy. The resins were synthesized at 10:1 fibre-resin weight percentages. The prepared composites were tested under ASTM standards to study the mechanical properties of the FRP composites such as Tensile strength, Flexural strength and Impact strength. Keywords: Glass fibre, prosopis juliflora, ASTM standards, epoxy resin, composite material.

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Mohan, T. P., i K. Kanny. "Mechanical Properties and Failure Analysis of Short Kenaf Fibre Reinforced Composites Processed by Resin Casting and Vacuum Infusion Methods". Polymers and Polymer Composites 26, nr 2 (luty 2018): 189–204. http://dx.doi.org/10.1177/096739111802600207.

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Modified and unmodified short kenaf fibre reinforced epoxy composites were processed with different short fibre lengths and fibre concentrations by resin casting (RC) and vacuum-assisted resin infusion (VARIM) methods. Three types of kenaf fibres were reinforced in epoxy polymer, namely, untreated kenaf fibre, mercerised and nanoclay-infused kenaf fibres. The mechanical properties such as tensile, flexural and impact properties of composites were studied. Nanoclay infused kenaf fibres have shown better tensile, flexural and impact properties than those of untreated and mercerised fibres. The composites processed by VARIM possess improved tensile and flexural properties when compared with RC composites, whereas the impact properties were better in RC composites than those of VARIM processed composites. The results showed that the mechanical properties of composites depend on the short fibre length and fibre concentration, irrespective of the processing conditions. Improved water barrier properties were also obtained in nanoclay-treated banana fibre composites.

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Patel, Rasmika H., i Ranjan G. Patel. "Carbon fibre reinforced epoxy composites". Polymer International 30, nr 3 (1993): 301–3. http://dx.doi.org/10.1002/pi.4990300304.

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Sarkar, Forkan, Mahmudul Akonda i Darshil U. Shah. "Mechanical Properties of Flax Tape-Reinforced Thermoset Composites". Materials 13, nr 23 (1.12.2020): 5485. http://dx.doi.org/10.3390/ma13235485.

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Three thermoset resin systems—bio-epoxy, epoxy, and polyester-with 30 v% flax fiber reinforcement have been studied to identify the optimal fiber–resin combination in a typical composite structure. Tensile, interface and interlaminar shear strength together with flexural and impact damage tolerance were compared in this study. The results revealed that mechanical and interfacial properties were not significantly affected by the different resin systems. Microscopy studies reveal that epoxy laminates predominantly fail by fibre linear breakage, polyester laminates by fiber pull-out, and bio-epoxy laminates by a combination of the two. The higher failure strains and pull-out mechanism may explain the better impact damage tolerance of polyester composites. Flow experiments were also conducted, revealing faster impregnation and lower void content with polyester resin, followed by bio-epoxy, due to their lower viscosities. Overall, bio-epoxy resin demonstrates comparable performance to epoxy and polyester resins for use in (semi-)structural bio-composites.

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Alam, Md Jahangir, Mohammad Washim Dewan, Sojib Kummer Paul i Khurshida Sharmin. "Investigation of Jute and Glass Fibre Reinforced Hybrid Composites Manufactured through Compression Molding Process". International Journal of Engineering Materials and Manufacture 7, nr 1 (1.01.2022): 35–46. http://dx.doi.org/10.26776/ijemm.07.01.2022.04.

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Expensive and non-biodegradable synthetic fibres are commonly utilized as reinforcement in composites for better mechanical properties. The eco-friendly and low-cost properties of natural fibres are promising alternative reinforcement for composites. In this study epoxy-based glass and jute fibres reinforced hybrid composites are fabricated varying fibre stacking sequences, 1jute-1glass alternatively (j-g-j-) and 4glass-9jute-4glass (4g-9j-4g). Hybridization of jute and glass fibre results better tensile, flexural and water absorption properties than only jute fibre reinforced composites but inferior to only glass fibre reinforced composites. The 4g-9j-4g stacking sequence resulted in better mechanical and water absorption properties than j-g-j-- stacking sequence. The effect of chemical treatment and glass microfiber infusion are also investigated. Chemically treated jute fibre and 2 wt.% microfiber infused hybrid composite shows about 42% improvements in flexural strength as compared to untreated and without microfiber infused composites. However, fibre chemical treatment and microfiber do not have a positive impact on tensile strength.

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Reddy, Gowkanapalli Ramachandra, Mala Ashok Kumar Kumar, Ati Ramesh, Mehaboob Basha, Nadadur Karthikeyan i Kolimi Madhava Reddy. "Preparation of GF/Wollastonite Reinforced Epoxy Hybrid Composite: Mechanical Properties". Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 58, nr 1 (27.04.2015): 26–33. http://dx.doi.org/10.52763/pjsir.phys.sci.58.1.2015.26.33.

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Performance of injection moulded short wollastonite fibre and chopped glass fibre reinforced hybrid epoxy composites was studied. The results showed that hybridisation of glass fibre and wollastonitewas in congruence to epoxy glass fibre composite system. Effect of fibre length, fibre orientation in matrix and analysis and fracture surface was undertaken. The mechanical properties of injection moulded, chopped glass fibre/wollastonite/epoxy hybrid composites were investigated by considering the effect of hybridisation by these two fillers. It was observed that the tensile, flexural, and impact properties of the filled epoxy were higher than those of unfilled epoxy. The effect of filler on epoxy matrix subjected to the tensile strength and modulus was studied and compared with the rule of mixture. The actual results are marginally low as compared with the values obtained by the rule of hybrid mixtures (RoHM).

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Nirmal, Kumar Jayachandran, i D. Premkumar. "Assessing of Mechanical Properties of Natural Fiber Reinforced Polymer Matrix Hybrid Composites". Applied Mechanics and Materials 766-767 (czerwiec 2015): 199–204. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.199.

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An experimental analysis has been carried out to investigate the mechanical properties of composites reinforced by sisal, coir, and banana fibres into epoxy resin matrix. The natural fibres were extracted by retting and manual processes. The composites fabricated by epoxy resin and reinforcement in the hybrid combination of Sisal-Banana and Sisal-Coir with the volume fraction of fibres varying from 5% to 30%. It has been identified that the mechanical properties increase with the increase of volume fraction of fibres to a certain extent and then decreases. The hybridization of the reinforcement in the composite shows greater mechanical properties when compared to individual type of natural fibres reinforced. For all the composites tested, the tensile strength of the composite increased up to 25% of volume fraction of the fibres and further for the increase in the volume fraction of fibre the mechanical properties were decreased. As same as tensile properties, the flexural and impact strength also increased linearly up to 25% of volume fraction of fibres and further for the increase in the volume fraction of fibre the mechanical properties were slightly decreased. Key Words: Sisal, Banana, Coir, Epoxy, Hybrid composite.

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Chandrika, V. S., A. Anamika, C. Jeeva, Bhagavathi Perumal, S. Sanal Kumar, J. Femila Roseline i Ishwarya Komalnu Raghavan. "Natural Fiber Incorporated Polymer Matrix Composites for Electronic Circuit Board Applications". Advances in Materials Science and Engineering 2022 (29.01.2022): 1–9. http://dx.doi.org/10.1155/2022/3035169.

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There are many more applications for fibre-reinforced epoxy composites than there are for metals and alloys today. For example, sustainable, recyclable, and biodegradable reinforcements have been used in numerous studies to improve the mechanical and thermal properties of composite materials. It was discovered that the properties of epoxy-based composites could be improved by combining biosolid waste sugarcane bagasse ash fillers, madar fibre, and epoxy resin. Conventional compression molding techniques were used to prepare the sugarcane bagasse ash (SBA) particles and madar fibre-reinforced epoxy resin-based composites (PMCs), which were loaded with varying amounts of fibre and fillers. Hybrid biocomposites were evaluated for mechanical (tensile, flexural, impact, and hardness) and water absorption characteristics. Epoxy matrix composites containing 28 wt.% madar fibre and 7 wt.% sugarcane bagasse ash fillers had tensile, flexural, hardness, and impact values of 61 MPa, 147 MPa, and 54 kJ/m2, respectively.

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Mutasher, Saad A., Adrian Poh, Aaron Mark Than i Justin Law. "The Effect of Alkali Treatment Mechanical Properties of Kenaf Fiber Epoxy Composite". Key Engineering Materials 471-472 (luty 2011): 191–96. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.191.

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Increasing worldwide environmental awareness is an encouraging scientific research into the development of cheaper, more environmentally friendly and sustainable construction and packaging materials. Kenaf fibre is a natural fibre which is growing in popularity due environmental issues and its properties as filler. Epoxy is a versatile thermosetting polymer which has a low curing temperature and used in making carbon fibre and glass composites. In this paper the properties of kenaf bast fibre epoxy reinforced composite have been investigated. The effects of alkali surface treatment of the fiber on the composite properties are also investigated. A hand layup method was use to fabricate the test specimens. Generally, all the treated fibre composites performed better than the untreated fibre with an improvement approximately 5% to 10%. Epoxy has the highest tensile strength and flexural strength among all specimens. The 24wt% treated kenaf fibre composites has the highest tensile strength, 27.72MPa and flexural strength, 56.91MPa. The kenaf fiber weight fraction of 40% gave the highest impact strength. The impact strength of the 40wt% kenaf fiber increased 14.3% after alkali treatment.

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Bhedasgaonkar, Rahul. "Manufacturing and Mechanical Properties Testing of Hybrid Natural Fibre Reinforced Polymer Composites". International Journal for Research in Applied Science and Engineering Technology 10, nr 6 (30.06.2022): 2390–96. http://dx.doi.org/10.22214/ijraset.2022.43877.

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Abstract: A composite material is a materials system made up of two or more micro or macro elements with different forms and chemical compositions that are largely insoluble in one another. It basically comprises of two phases: matrix and fiber. Polymers, ceramics, and metals such as nylon, glass, graphite, Aluminium oxide, boron, and aluminium are examples of fibres. In the present research work epoxy is used as matrix and Bamboo, Sugarcane Bagasse and Coconut fibre are used as fibres for preparing the composites. In the preparation of specimen, the fibre as taken as a continuous fibre. The fibre is treated with NaOH solution. Hybrid natural fibre reinforced composites of bamboo, sugarcane baggase and coconut coir has been prepared using hand lay-up process of composite manufacturing. These hybrid composites were tested for determining their tensile and impact strengths. Results of mechanical testing reveals that the tensile strength of Bamboo- Bagasse hybrid composite is more compared to other composites. Taking into consideration of enhanced tensile and impact strength of bamboo-bagasse hybrid natural fibre polymer composite, we recommend the use of hybrid bamboo-bagasse composite in manufacturing of automotive bodies. Because of their unique characteristics of recyclability, waste utilization, biodegradability, good strength, and a viable alternative to plastics, these composites can be used for a variety of applications

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Mohan, S. Krishna, Arul Thayammal Ganesan, M. Ramarao, Amol L. Mangrulkar, S. Rajesh, Sami Al Obaid, Saleh Alfarraj, S. Sivakumar i Manikandan Ganesan. "Evaluation of Mechanical Properties of Sisal and Bamboo Fibres Reinforced with Polymer Matrix Composites Prepared by Compression Moulding Process". Advances in Materials Science and Engineering 2021 (29.11.2021): 1–8. http://dx.doi.org/10.1155/2021/2832149.

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Today’s modern, dynamic world would be impossible to imagine without the concept of composite material advancement. Various studies are being conducted in this area in order to reach the desired level. In terms of compatibility, natural fibre reinforced polymer-based composites and synthetic fibre composites are very similar. Because they are lightweight, nontoxic, and nonabrasive, they are very popular with consumers. They are also readily available and affordable. Composite materials made from natural fibre have superior mechanical properties compared to those made from synthetic fibre. As part of this research, an epoxy-based composite with bamboo and sisal fibre reinforcement is examined. Reinforced with epoxy resin, bamboo fibre and sisal fibre are used to make composite materials. The effect of adding bamboo fibre and sisal fibre in various weight percentages on the mechanical behaviour of composites is investigated.

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Chun, Koay Seong, Tengku Maimunah, Chan Ming Yeng, Tshai Kim Yeow i Ong Thai Kiat. "Properties of corn husk fibre reinforced epoxy composites fabricated using vacuum-assisted resin infusion". Journal of Physical Science 31, nr 3 (25.11.2020): 17–31. http://dx.doi.org/10.21315/jps2020.31.3.2.

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Corn husk is a non-fruit part of the corn and an agricultural waste. This research focuses on fabricating composite material from the corn husk fibre by using a vacuum assisted resin infusion (VARI) technique. The corn husk fibre was extracted using water retting method and treated with alkali and bleaching treatments using sodium hydroxide (NaOH) and hydrogen peroxide (H2O2). Then, those fibres were made into nonwoven fibre mat using water laid method. The fibre mat was infused with epoxy resin to make a composite. The mechanical result has shown that the composite with 20% of fibre has higher tensile strength and modulus compared to neat epoxy. Both treatments have removed the non-cellulose content, such as hemicellulose and lignin. Moreover, the treatments also promoted better interfacial adhesion between fibre and matrix. Thus, the NaOH treated and H2O2 treated composites showed approximately 56% and 82%, respectively, higher tensile strength than untreated composite. Both treated composites were also stiffer and exhibited lower water absorption compared to untreated composite.

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Pinto, Rochele, Gediminas Monastyreckis, Hamza Mahmoud Aboelanin, Vladimir Spacek i Daiva Zeleniakiene. "Mechanical properties of carbon fibre reinforced composites modified with star-shaped butyl methacrylate". Journal of Composite Materials 56, nr 6 (11.01.2022): 951–59. http://dx.doi.org/10.1177/00219983211065206.

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This article presents the possibility of strength improvement and energy absorption of carbon fibre reinforced polymer composites by matrix modification. In this study, the mechanical properties of bisphenol-A epoxy matrix and carbon fibre reinforced polymer composites were modified with four different wt.% of star-shaped polymer n-butyl methacrylate (P n-BMA) block glycidyl methacrylate (PGMA). The tensile strength of the epoxy with 1 wt.% star-shaped polymer showed 128% increase in comparison to unmodified epoxy samples. Two different wt.% were then used for the modification of carbon fibre-reinforced polymer composite samples. Tensile tests and low-velocity impact tests were conducted for characterising modified samples. Tensile test results performed showed a slight improvement in the tensile strength and modulus of the composite. Low-velocity impact tests showed that addition of 1 wt.% star-shaped polymer additives increase composite energy absorption by 53.85%, compared to pure epoxy composite specimens. Scanning electron microscopy (SEM) analysis of post-impact specimens displays fracture modes and bonding between the matrix and fibre in the composites. These results demonstrate the potential of a novel star-shaped polymer as an additive material for automotive composite parts, where energy absorption is significant.

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La Rosa, Angela Daniela, i Stergios Goutianos. "Benefits and Opportunities of Reusing Waste Rotor Blades Materials from a Life Cycle Perspective". Key Engineering Materials 919 (11.05.2022): 270–77. http://dx.doi.org/10.4028/p-yzl390.

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The present Life Cycle Analysis (LCA) intends to investigate the environmental benefit of using natural fibres and/or recyclable epoxy resins for future manufacturing of small/medium wind turbine blades to handle thermoset polymer composites that are designed to be recyclable at the end of life”). LCA comparison of a modelled blade based on flax fibres reinforced recyclable epoxy resin and a traditional blade made of glass fibres and non recyclable epoxy resin is presented. In the production phase the environmental impacts of the flax fibre reinforced recyclable epoxy resin composite blade are higher than the blade based on glass fibre epoxy composite mainly due to the higher amount of epoxy resin necessary to satisfy the design criteria of the blade e.g. fatigue and deflection. The end of life is significative as the environmental impacts are reduced by the recycling and recovery of the fibres and the resin, being the resin more significative.

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Newman, Roger H., Armin Thumm, E. C. Clauss i M. J. L. Guen. "Improving Hygrothermal Performance in Epoxy-Biofibre Composites". Advanced Materials Research 29-30 (listopad 2007): 287–90. http://dx.doi.org/10.4028/www.scientific.net/amr.29-30.287.

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Confocal microscopy and water diffusivity measurements were used to characterise the development of defects in biofibre-reinforced composite materials. Biofibres swelled more than the matrix when the specimen was immersed in water, but the associated distortion of the matrix rarely caused defects. The biofibres shrank faster than the matrix when the specimen was dried in air, causing debonding at the fibre-matrix interfaces and microcracks within the fibres. We started with coarse technical fibres from the leaves of harakeke (Phormium tenax), treated a portion with 1% NaOH, and pulped a portion at 170 °C. Water diffusivities for the corresponding composites increased over the first 3 wet-dry cycles, particularly for the composite made with untreated fibre, but were too small to be of concern for the composite made from pulped fibre.

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Bakar, Mimi Azlina Abu, Sahrim Ahmad, Wahyu Kuntjoro i Salmiah Kasolang. "Effect of Carbon Fibre Ratio to the Impact Properties of Hybrid Kenaf/Carbon Fibre Reinforced Epoxy Composites". Applied Mechanics and Materials 393 (wrzesień 2013): 136–39. http://dx.doi.org/10.4028/www.scientific.net/amm.393.136.

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Effects of the incorporation of untreated and treated hybrid kenaf/carbon fibre reinforced epoxy composites on the impact properties were studied. Hybrid kenaf/carbon fibres and thermoset matrices were hand-laid up and characterized in terms of its mechanical properties. The kenaf fibres were alkali treated whilst the carbon fibres were gamma radiation treated before use as reinforcement in the epoxy resin matrix. The reinforcing effects of kenaf hybridized with carbon fibre in epoxy composites were evaluated at various fibre loadings with overall fibre contents 20 wt%. Hybrid composites with different ratios of kenaf fibre : carbon fibre ; 0.9:0.1, 0.8:0.2, 0.7:0.3 and 0.6:0.4 were prepared. Impact tests of untreated and treated hybrid kenaf/carbon fibres were performed. The fractured surfaces of these composites were investigated by using scanning electron microscopic technique (SEM) to determine the interfacial bonding between the matrix and the fibre reinforcement. It was found that the treated hybrid composites increased the impact strength by 26% compared to the untreated ones.

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Low, K. O., J. L. Lim i K. J. Wong. "An Experimental Study on the Scratch Characteristics of Bamboo Fibre-Reinforced Epoxy Composite". Advanced Composites Letters 19, nr 4 (lipiec 2010): 096369351001900. http://dx.doi.org/10.1177/096369351001900403.

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Bamboo fibre has been used as reinforcement in epoxy. The influence of bamboo fibres orientation on the scratch characteristics has been studied by single pass scratching action and evaluated in terms of scratch force and scratch hardness. The composites are prepared for three different fibre orientations, longitudinal, transverse and 10 mm random. Five values of applied load (2 N, 5 N, 10 N, 12 N, 15 N) and two scratching speeds (5.6 mm s−1, 11.2 mm s−1) are considered. The results revealed that the introduction of bamboo fibres tends to increase the scratch force for all composites considered except for longitudinal orientated fibre composite. The scratch hardness shows improvement when bamboo fibre is introduced, except for the longitudinal case. The best result for scratch hardness is exhibited by transversely orientated bamboo fibre reinforced epoxy corresponding to 35 % improvement.

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Jena, Hemalata, i Abinash Panigrahi. "The effect of clam shell powder on kinetics of water absorption of jute epoxy composite". World Journal of Engineering 18, nr 5 (4.02.2021): 684–91. http://dx.doi.org/10.1108/wje-08-2020-0334.

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Purpose Here, attempts have been made to explore the possible use of Marine waste as filler materials into the bio-fibre composites. Clam shell is a type of marine waste which belongs to the class of Bivalvia. It is mainly made of aragonite crystalline polymorphs. This paper aims to develop a new class of natural fibre composite in which jute fibre as reinforcement, epoxy as matrix and clam shell, as particulate microsphere filler. The study investigates the effects of different amounts of clam shell powder on the kinetics of water absorption of jute fibre-reinforced epoxy composite. Two different environmental conditions at room temperature, i.e. distilled water and seawater, are collected for this purpose. Moisture absorption reduces when clam shell is added to the jute-epoxy composite. The curve of water absorption of jute-epoxy composites with filler loading at both environmental conditions follows as Fickian behaviour. Design/methodology/approach Hand lay-up technique to fabricate the composite – Experimental observation Findings The incorporation of Clam shell filler in jute epoxy composite modified the water absorption property of the composite. Hence the present marine waste is an potential filler in jute fibre reinforced polymer composite. Originality/value The paper demonstrates a new class hybrid composite material which uses a marine waste as important phase in the bio-fibre-reinforced composite. It is a new work submitted for original research paper.

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Senthil Nathan, D., K. Rajkumar, A. Gnanavelbabu i P. Sabarinathan. "Mechanical Properties and Machinability Studies on the Human Hair-Coconut Coir-Glass Fibre Hybrid Composite". Applied Mechanics and Materials 852 (wrzesień 2016): 79–84. http://dx.doi.org/10.4028/www.scientific.net/amm.852.79.

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Natural Fiber-reinforced epoxy composites have a potential of lightweight structural materials used in various engineering applications owing to its excellent properties. Present paper investigates the mechanical properties of glass fibre, coconut fibre and human hair reinforced epoxy hybrid composite. In this work, epoxy resin with various layers of reinforcement added by using hand layup technique. The composite is subjected to mechanical testing. Machinability studies were performed based on the drilling experiments. TiAlN coated solid carbide (SC) and High speed steel (HSS) drills were used in the drilling experiments and made a comparative study on the output parameter. Solid carbide tool has a lower thrust force with feed rate being the most influential parameter on thrust force.

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R., Zulkifli, i Che Husna Azhari. "Interfacial Treatment of Multi-Layer Woven Silk Reinforced Epoxy Composites". Advanced Materials Research 97-101 (marzec 2010): 1697–700. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1697.

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The aim of the project is to study the interlaminar fracture toughness, GIC of woven silk reinforced epoxy composite. Silk fibre has been treated with silane coupling agent and the silk/epoxy composites has been fabricated with different number of silk fibre layers. The processing technique used to prepare the sample is a vacuum bag cured in an autoclave. In this study, test specimens were fabricated by using silk fibre of between 8 to 14 layers. The first set of composites panel consisted of plain silk fibre while the second sets consisted of silk fibre which has been treated with 3-aminopropyl triethoxysilane. Mode I test based on double cantilever beam specimens (DCB) method have been used over all the specimens. The results of the GIC were plotted and compared. GIC of the composites in set 2 were found to be higher than the value in set 1. During the test, crack propagation is stable and no fibre bridging occurred between both sides of fracture surfaces. All the failure that occurred were at the fibre-matrix interface as seen using SEM. The GIC of woven silk/epoxy composites can be enhanced by surface treatment using coupling agent. Surface treatment and number of woven silk fibre layers has affected the interlaminar fracture properties of the composite panel.

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Jeyapragash, R., V. Srinivasan, S. Sathiyamurthy i G. Swaminathan. "Mechanical and dimensional stability behaviours of alkali-treated calotropis gigantea fibre-reinforced bio-particles impregnated epoxy composites". Mehran University Research Journal of Engineering and Technology 41, nr 2 (1.04.2022): 109–15. http://dx.doi.org/10.22581/muet1982.2202.10.

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Calotropis gigantea fibre has been identified as suitable reinforcement fibre in polymer composites by current researchers. Epoxy matrix provided better interfacial bonding with the fibres and particulates to enhance the mechanical properties of pure polymer substances. If elements such as chitosan, rice husk and red mud have been added in epoxy system, it improves the mouldability and fills the missed portion of fibre reinforcement in composites. Alkaline treatment of natural fibres produce conversion of cellulose and production of short length crystallites which enhances surface roughness on the fibre surface for developing better adhesion between constitution materials of composites. The new variety of natural fibre extracted from stem of Apocynaceae family plant has been used in epoxy matrix along with bio and industrial residues in the present investigation. The three point flexural strength, tensile behaviour and izod impact strength have been evaluated and dimensional stability characteristics are identified for the calotropis gigantea fibre reinforced particulates impregnated epoxy composites.

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Aditya, P. K., i P. K. Sinha. "Effects of Fibre Permeability on Moisture Diffusion Coefficients of Polymeric Composites". Engineering Plastics 1, nr 5 (styczeń 1993): 147823919300100. http://dx.doi.org/10.1177/147823919300100502.

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A single fibre composite model reinforced with a permeable fibre is used to evaluate the moisture diffusion coefficient analytically. Due to the fibre permeability, absorption of moisture takes place through both the fibre and the matrix. The diffusion paths around the fibre, due to their curved nature, are generated using the cubic spline theory. The diffusion paths through the permeable fibre are assumed to be a set of parallel lines. Diffusivities of such single fibre composites are computed at different values of relative fibre diffusivities. The relative fibre diffusivities corresponding to kevlar and jute fibres are considered separately to evaluate composite diffusivities. The diffusivities obtained for kevlar-epoxy and jute-epoxy single fibre models are found to be in good agreement with those available in the existing literature.

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Aditya, P. K., i P. K. Sinha. "Effects of Fibre Permeability on Moisture Diffusion Coefficients of Polymeric Composites". Polymers and Polymer Composites 1, nr 5 (lipiec 1993): 341–48. http://dx.doi.org/10.1177/096739119300100502.

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A single fibre composite model reinforced with a permeable fibre is used to evaluate the moisture diffusion coefficient analytically. Due to the fibre permeability, absorption of moisture takes place through both the fibre and the matrix. The diffusion paths around the fibre, due to their curved nature, are generated using the cubic spline theory. The diffusion paths through the permeable fibre are assumed to be a set of parallel lines. Diffusivities of such single fibre composites are computed at different values of relative fibre diffusivities. The relative fibre diffusivities corresponding to kevlar and jute fibres are considered separately to evaluate composite diffusivities. The diffusivities obtained for kevlar-epoxy and jute-epoxy single fibre models are found to be in good agreement with those available in the existing literature.

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RAVICHANDRAN, SUBRAMANIAN, E. VENGATESAN i A. RAMAKRISHNAN. "Stress - Strain Analysis and Deformation Behavior of Fiber Reinforced Styrene - Ethylene - Butylene - Styrene Polymer Hybrid Nano Composites". Material Science Research India 16, nr 1 (5.04.2019): 62–69. http://dx.doi.org/10.13005/msri/160109.

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Composite materials are replacing traditional materials, because of their superior physical and mechanical properties. The main objective of the present work is to perform stress-strain analysis on Styrene-Ethylene-Butylene-Styrene (SEBS)-epoxy resin composites under reinforcement of fibres and dispersion of CuO, ZnO, MgO, SiO and TiO2nano metal oxides. Combination of glass fibre with particle reinforcement (GFRPs) applications has increased in recent days. In this study, glass fibre reinforced epoxy composites with different nano metal oxides are developed by compression moulding method and their mechanical properties such as breaking load, elastic limit, plastic range and fracture point are evaluated. The results indicate that the incorporation of nanophase material with glass fibre can improve the properties of composites.

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Prabhudass, J. M., K. Palanikumar, Elango Natarajan i Kalaimani Markandan. "Enhanced Thermal Stability, Mechanical Properties and Structural Integrity of MWCNT Filled Bamboo/Kenaf Hybrid Polymer Nanocomposites". Materials 15, nr 2 (10.01.2022): 506. http://dx.doi.org/10.3390/ma15020506.

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Recently, there has been an inclination towards natural fibre reinforced polymer composites owing to their merits such as environmental friendliness, light weight and excellent strength. In the present study, six laminates were fabricated consisting of natural fibres such as Kenaf fibre (Hibiscus cannabinus L.) and Bamboo fibre, together with multi-walled carbon nanotubes (MWCNTs) as reinforcing fillers in the epoxy matrix. Mechanical testing revealed that hybridization of natural fibres was capable of yielding composites with enhanced tensile properties. Additionally, impact testing showed a maximum improvement of ≈80.6% with the inclusion of MWCNTs as nanofiller in the composites with very high energy absorption characteristics, which were attributed to the high specific energy absorption of carbon nanotubes. The viscoelastic behaviour of hybridised composites reinforced with MWCNTs also showed promising results with a significant improvement in the glass transition temperature (Tg) and 41% improvement in storage modulus. It is worth noting that treatment of the fibres in NaOH solution prior to composite fabrication was effective in improving the interfacial bonding with the epoxy matrix, which, in turn, resulted in improved mechanical properties.

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Nikhil Chakravarthi, K., i S. Madhu. "Compression strength analysis of glass fibre polymer composites filled with brown algae powder compared to glass fibre reinforced polymer composite". Journal of Physics: Conference Series 2484, nr 1 (1.05.2023): 012006. http://dx.doi.org/10.1088/1742-6596/2484/1/012006.

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Abstract The current investigation intends to compare the compression strength analysis of glass fiber composites filled with brown algae filler. The material involved in this work is a glass fibre composite filled with and without brown algae filler. 40 specimens were tested by using selected parameters using the universal testing machine. In this work, the control group was a glass fiber epoxy composite and the experimental group was a brown algae-filled glass fiber-reinforced polymer. The mean compressive strength obtained for the brown algae-filled glass fibre reinforced polymer is, whereas it is for the Glass fibre reinforced polymer with the significant value is 0.018 (p<0.05). Within the scope of this investigation, experimental data reveals that strength in compression is high when the glass fiber-reinforced composite is filled with brown algae powder.

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S. Hassan, Mohanad, Yasir K. Ibrahim i Ismail I. Marhoon. "INVESTIGATION OF MECHANICAL CHARACTERISTICS OF (EPOXY-RESOLE BLEND) MATRIX HYBRID COMPOSITE". Journal of Engineering and Sustainable Development 26, nr 3 (1.05.2022): 27–32. http://dx.doi.org/10.31272/jeasd.26.3.4.

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This research aims to investigate the impact of fibre reinforcement on the mechanical properties of hybrid polymer matrix composites. The samples made of a hybrid polymer composite were made from the reaction of two polymers, 90% epoxy resin and 10% Resole resin, and were reinforced with two types of reinforcements. The reinforcement used for the current research was carbon and Kevlar fibers. The fibers were in plain weave and were added in volumetric fractions. This research assessed mechanical characteristics like tensile strength, hardness, and impact strength in two cases: one for epoxy/Resole blend only and the other for a hybrid composite material. The addition of fibre reinforcement improves the mechanical properties of the epoxy. Kevlar fiber provides the best mechanical properties for the epoxy/Resole blend when reinforced with two layers of kevlar fibers.

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Mohan, TP, i K. Kanny. "Processing of high weight fraction banana fiber reinforced epoxy composites using pressure induced dip casting method". Journal of Composite Materials 55, nr 17 (20.01.2021): 2301–13. http://dx.doi.org/10.1177/0021998320988044.

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The objective of this work is to realize new polymer composite material containing high amount of natural fibers as a bio-based reinforcement phase. Short banana fiber is chosen as a reinforcement material and epoxy polymer as a matrix material. About 77 wt.% of banana fibers were reinforced in the epoxy polymer matrix composite, using pressure induced fiber dipping method. Nanoclay particles were infused into the banana fibers to improve the fiber matrix interface properties. The nanoclay infused banana fiber were used to reinforce epoxy composite and its properties were compared with untreated banana fiber reinforced epoxy composite and banana fiber reinforced epoxy filled with nanoclay matrix composite. The surface characteristics of these composites were examined by electron microscope and the result shows well dispersed fibers in epoxy matrix. Thermal (thermogravimetry analysis and dynamic mechanical analysis), mechanical (tensile and fiber pullout) and water barrier properties of these composites were examined and the result showed that the nanoclay infused banana fiber reinforced epoxy composite shows better and improved properties. Improved surface finish composite was also obtained by this processing technique.

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