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1
Vedanarayanan, V., B. S. Praveen Kumar, M. S. Karuna, A. Jayanthi, K. V. Pradeep Kumar, A. Radha, G. Ramkumar e David Christopher. "Experimental Investigation on Mechanical Behaviour of Kevlar and Ramie Fibre Reinforced Epoxy Composites". Journal of Nanomaterials 2022 (2 febbraio 2022): 1–10. http://dx.doi.org/10.1155/2022/8802222.
Abstract (sommario):
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.
2
S.F.K. Sherwani, E.S. Zainudin, S.M. Sapuan, Z. Leman e A. Khalina. "Recent Development of Natural Fibers Reinforced Polylactic Acid Composites". Journal of Research in Nanoscience and Nanotechnology 5, n. 1 (18 aprile 2022): 103–8. http://dx.doi.org/10.37934/jrnn.5.1.103108.
Abstract (sommario):
The current research determines the most recent developments in natural fibres reinforced polylactic acid composites. Polylactic acid (PLA) is derived from renewable resources and is capable of degrading microorganisms, eliminating the pollution caused by petrochemical-based plastic. PLA is the most promising biodegradable material among biodegradable polymers since it is easily attacked by bacteria PLA decomposes easily, releasing H2O, CO2, and humus, the black material found in soil. PLA is a thermoplastic polymer that is widely used in the production of plastic bags, large planting cups, paper coating, fibres, films, packaging, and as a matrix material in composites. This review also discussed the physical and mechanical properties of several natural fibre reinforced polylactic acid composites. Several natural fibres have been used to reinforce PLA as a reinforcement for natural fibre composites in the field of composite manufacturing.
3
Sharma, Ritika, Akshay Joshi, Dimple e G. P. Singh. "TGA and Thermal Kinetics of Raw Calotropis Procera Fiber Reinforced PF Composites". Journal of Condensed Matter 1, n. 01 (1 giugno 2023): 24–27. http://dx.doi.org/10.61343/jcm.v1i01.6.
Abstract (sommario):
Natural fibre-reinforced composites are used in various structurally designed goods, from civil engineering to the production of automobiles, thanks to qualities like minimal density, a favourable aspect ratio, biodegradability, and ease of fabrication. The thermal behaviour of natural fibres and composites has also been researched. The thermal degradation kinetics characteristics of composites made with phenol formaldehyde resin and reinforced with untreated Aak fibre with varying fibre loads have been determined using thermogravimetric analysis (TGA). The Flynn-Wall procedure determined each component and composite material's precise apparent activation energy (Ea). Varying fibre load (5, 10, 15, 20 wt.%) was used to reinforce PF resin, and TGA was taken for all composite samples. By observing TGA data composite with 15 wt% fibre load shows maximum thermal stability, it can also be concluded that the thermal stability of prepared composites increases with increasing fibre load. After 15 wt%, it starts to decrease.
4
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, n. 6 (30 giugno 2022): 2390–96. http://dx.doi.org/10.22214/ijraset.2022.43877.
Abstract (sommario):
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
5
Edafiadhe, E. D., e 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, n. 2 (30 agosto 2022): 32–39. http://dx.doi.org/10.31248/jeia2022.023.
Abstract (sommario):
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.
6
Zaleha, M., M. Shahruddin e I. Maizlinda Izwana. "A Review on the Mechanical and Physical Properties of Natural Fiber Composites". Applied Mechanics and Materials 229-231 (novembre 2012): 276–81. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.276.
Abstract (sommario):
Research on the use of natural fibers as replacement to man-made fibre in fiber reinforced composites have received more interest and opened up further industrial possibilities. Natural fibre presents many advantages compared to synthetic fibers which make them attractive as reinforcements in composite material. They come from abundant and renewable resources, which ensures a continuous fibre supply and a significant material cost saving to the plastics, automotive and packaging industries. The paper reviews the previous and current research works published in the field of natural fiber reinforced composite material with special reference in mechanical properties of the natural fiber reinforced composite.
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Dong, Chensong. "Review of natural fibre-reinforced hybrid composites". Journal of Reinforced Plastics and Composites 37, n. 5 (3 dicembre 2017): 331–48. http://dx.doi.org/10.1177/0731684417745368.
Abstract (sommario):
Natural fibre-reinforced hybrid composites which contain one or more types of natural reinforcement are gaining increasing research interest. This paper presents a review of natural fibre-reinforced hybrid composites. Both thermoplastic and thermoset composites reinforced by hybrid/synthetic fibres or hybrid/hybrid fibres are reviewed. The properties of natural fibres, the properties and processing of composites are summarised.
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Venkatarramaniah, Durgunti, Kanthi Madhu, Endabetla David, Kudikala Jayanth, Pallapu Kumar e Chelpuri Chandu. "Investigation of Mechanical Properties of Natural Fiber Reinforced Hybrid Composite". International Journal for Research in Applied Science and Engineering Technology 12, n. 5 (31 maggio 2024): 1527–34. http://dx.doi.org/10.22214/ijraset.2024.61906.
Abstract (sommario):
Abstract: Hybrid composite is a material composed of matrix and two or more reinforcements. Two or more reinforcements in hybrid composite replace the limitation of conventional composites by providing uniform strength to thematerial. Recently, natural fibers reinforced hybrid composites are gaining increased interest due to the encouraging properties of natural fibers such as high strength to weight ratio, low cost, no harm to environment etc. Many studies dealt with natural fibers based composite reported that the hybrid composites has the potential to replace glass fiber based composites and to reduce the weight of conventional composite. This project reports on the manufacturing of the Indian elm and Acacia fibre reinforced epoxy composite laminate as per the ASTM (American Society for Testing and Materials) Standards. This laminate consists of matrix and reinforcement. Epoxy is used as a structural matrix material which is then reinforced by Indian elm fiber, combining Acacia fibres with resin matrix results in composites that are strong, lightweight, corrosion-resistant and dimensionally stable. They also provide good design flexibility, high dielectric strength and act as inflammable materials. Their tremendous strength-to-weight and design flexibility make them ideal in structural components for the aerospace industry. In this project the Indian elm and Acacia fibre reinforced epoxy composite is manufactured into two different parts each having ratios of Indian elm and Acacia fibre to epoxy resin as 60:40, 40:60 respectively and are compared for ultimate tensile strength, impact strength, hardness strength and flexural strength of the material by conducting experiment such as tensile test, flexural test, hardness test and impact test.
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Jyani, Kanchan, G. P. Singh, Pritika Jay Banshiwal e Ritika Sharma. "A Comprehensive Review of Natural Fibre Reinforced Polymer Composites". Journal of Condensed Matter 1, n. 02 (1 dicembre 2023): 21–26. http://dx.doi.org/10.61343/jcm.v1i02.11.
Abstract (sommario):
The idea of composite materials is introduced in this article, with an emphasis on composites made of natural fibres and polymers. Composites are made up of various elements or phases that significantly affect the material's general characteristics. The matrix, the continuous phase, is typically made up of ceramics, metals, or polymers. Natural fibres that provide strength and stiffness make up the reinforcement component in natural fibre-reinforced composites. These composite materials have uses in the consumer goods, packaging, sports, and construction industries, in addition to providing environmental advantages. The paper presents a review of the literature on the creation and characterization of composites reinforced by natural fibres. To improve the mechanical, thermal, and chemical properties of the composites, numerous studies have looked at various kinds of natural fibres, surface modifications, coupling agents, and processing methods. The benefits and drawbacks of using natural fibres in composites are discussed in the article. It gives a general overview of how natural fibre-reinforced polymer composites have evolved and what uses they might have in the future. The article highlights current research initiatives and difficulties in enhancing the performance and compatibility of natural fibres with polymer matrices. The research advances the use of natural fibre composites as environmentally friendly substitutes across a range of industries by fostering a better understanding of their advantages and disadvantages.
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Kumar, Sanjeev, Lalta Prasad, Vinay Kumar Patel, Virendra Kumar, Anil Kumar, Anshul Yadav e Jerzy Winczek. "Physical and Mechanical Properties of Natural Leaf Fiber-Reinforced Epoxy Polyester Composites". Polymers 13, n. 9 (22 aprile 2021): 1369. http://dx.doi.org/10.3390/polym13091369.
Abstract (sommario):
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.
11
Zhou, Xiang Ming, Reza Madanipour e Seyed Ghaffar. "Impact Properties of Hemp Fibre Reinforced Cementitious Composites". Key Engineering Materials 711 (settembre 2016): 163–70. http://dx.doi.org/10.4028/www.scientific.net/kem.711.163.
Abstract (sommario):
The construction industry has seen an incredibly fast increase in utilizing natural fibres for making low-cost building materials to achieve sustainable construction. One of such applications is natural fibre-reinforced cementitious materials for either structural or non-structural purpose. Impact properties are engineering properties received increasing attentions from engineering community for structural materials. This research therefore studies impact resistance of hemp fibre reinforced cementitious composites at early ages. Hemp fibre with various lengths, 10 mm and 20 mm, are utilized to reinforce cementitious materials. Hemp fibre reinforced cementitious composite slabs were tested under repeating dropping mass till failure at the age of 7, 14 and 28 days. Cracking behaviour, impact resistance, absorbed impact energy and survived impact blows upon failure are qualitatively/quantitatively analysed. It has been found that 20 mm-long hemp fibre reinforcement leads to higher impact resistance, more absorbed impact energy and survived more impact blows upon failure. Cementitious composite slabs reinforced by 20 mm-long hemp fibres exhibit higher impact crack resistance ratio than those reinforced by 10 mm-long fibres. Longer fibres are more effective in inhibiting the growth of micro-cracks and blunting the propagation of micro-cracks before they join up to form macro cracks leading to ultimate failure.
12
Raghu, M. J., e Govardhan Goud. "Tribological Properties of Calotropis Procera Natural Fiber Reinforced Hybrid Epoxy Composites". Applied Mechanics and Materials 895 (novembre 2019): 45–51. http://dx.doi.org/10.4028/www.scientific.net/amm.895.45.
Abstract (sommario):
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.
13
Siregar, Januar Parlaungan, Tezara Cionita, Dandi Bachtiar e Mohd Ruzaimi Mat Rejab. "Tensile Properties of Pineapple Leaf Fibre Reinforced Unsaturated Polyester Composites". Applied Mechanics and Materials 695 (novembre 2014): 159–62. http://dx.doi.org/10.4028/www.scientific.net/amm.695.159.
Abstract (sommario):
In recent years natural fibres such as sisal, jute, kenaf, pineapple leaf and banana fibres appear to be the outstanding materials which come as the viable and abundant substitute for the expensive and non-renewable synthethic fibre. This paper investigate the effect of fibre length and fibre content on the tensile properties of pineapple leaf fibre (PALF) reinforced unsaturated polyester (UP) composites. PALF as reinforcement agent will be employed with UP to form composite material specimens. The various of fiber length (<0.5, 0.5–1, and 1-2 mm) and fibre content (0, 5, 10 and 15 % by volume) in UP composite have been studied. The fabrication of PALF/UP composites used hand lay-up process, and the specimens for tensile test prepared follow the ASTM D3039. The result obtained from this study show that the 1-2 mm fibre length has higher tensile strength (42 MPa) and tensile modulus (1344 MPa) values compared to fibre length of <0.5 mm (30 MPa and 981 MPa) and 0.5-1 mm (35.40 MPa and 1020 MPa) respectively. Meanwhile, for the effect of various fibre content in study has shown that the increase of fibre content has decreased in tensile strength dan tensile modulus of composites. The increase of fibre content due to poor interfacial bonding and poor wetting of the fibre by unsaturated polyster. The treatment of natural fibre are suggested in order to improve the interfacial adhesion between natural fibre and the unsaturated polyester.
14
Prabakaran, E., D. Vasanth Kumar, A. Jaganathan, P. Ashok Kumar e M. Veeerapathran. "Analysis on Fiber Reinforced Epoxy Concrete Composite for Industrial Flooring – A Review". Journal of Physics: Conference Series 2272, n. 1 (1 luglio 2022): 012026. http://dx.doi.org/10.1088/1742-6596/2272/1/012026.
Abstract (sommario):
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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Abbas, Al-Ghazali Noor, Farah Nora Aznieta Abdul Aziz, Khalina Abdan, Noor Azline Mohd Nasir e Mohd Nurazzi Norizan. "Kenaf Fibre Reinforced Cementitious Composites". Fibers 10, n. 1 (4 gennaio 2022): 3. http://dx.doi.org/10.3390/fib10010003.
Abstract (sommario):
Increased environmental awareness and the demand for sustainable materials have promoted the use of more renewable and eco-friendly resources like natural fibre as reinforcement in the building industry. Among various types of natural fibres, kenaf has been widely planted in the past few years, however, it hasn’t been extensively used as a construction material. Kenaf bast fibre is a high tensile strength fibre, lightweight and cost-effective, offering a potential alternative for reinforcement in construction applications. To encourage its use, it’s essential to understand how kenaf fibre’s properties affect the performance of cement-based composites. Hence, the effects of KF on the properties of cementitious composites in the fresh and hardened states have been discussed. The current state-of-art of Kenaf Fibre Reinforced Cement Composite (KFRCC) and its different applications are presented for the reader to explore. This review confirmed the improvement of tensile and flexural strengths of cementitious composites with the inclusion of the appropriate content and length of kenaf fibres. However, more studies are necessary to understand the overall impact of kenaf fibres on the compressive strength and durability properties of cementitious composites.
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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, n. 9 (30 settembre 2021): 116–27. http://dx.doi.org/10.22214/ijraset.2021.37928.
Abstract (sommario):
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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binti Mohd, Nurul Farah Adibah, Taufik Roni Sahroni e Mohammad Hafizudin Abd Kadir. "Feasibility Study of Casted Natural Fibre-LM6 Composites for Engineering Application". Advanced Materials Research 903 (febbraio 2014): 67–72. http://dx.doi.org/10.4028/www.scientific.net/amr.903.67.
Abstract (sommario):
This paper presents the investigation of casted natural fiber-LM6 composites for engineering application. The objective of this research is to study the feasibility of natural fibre to introduce in the metal matrix composites for sand casting process. LM6 is the core material used in this research while natural fibre used as composite materials as well as to remain the hardness of the materials. The preparation of natural fibre composites was proposed to introduce in metal matrix composite material. Empty Fruit Bunch (EFB) and kenaf fibre were used in the experimental work. Natural fibre is reinforced in the LM6 material by using metal casting process with open mould technique. LM6 material was melted using induction furnace which required 650°C for melting point. The structure and composition of the composite materials is determined using EDX (Energy Dispersive X-ray) to show that fibres are absent on the surface of LM6. The microstructure of casted natural fibre-LM6 composites was presented using Zeiss Scanning Electron Microscope (SEM) with an accelerating voltage of 15kV. As a result, natural fibre composites were feasible to be introduced in metal matrix composites and potential for engineering application.
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Merta, Ildiko, Ana Mladenovič, Janez Turk, Aljoša Šajna e Alenka Mauko Pranjić. "Life Cycle Assessment of Natural Fibre Reinforced Cementitious Composites". Key Engineering Materials 761 (gennaio 2018): 204–9. http://dx.doi.org/10.4028/www.scientific.net/kem.761.204.
Abstract (sommario):
Three cementitious composites containing different natural fibres (flax, hemp and sea-grass) were evaluated from an environmental perspective by means of Life Cycle Assessment (LCA) method applying the cradle-to-gate approach. The environmental impact of these composites was compared to that of cementitious composites reinforced with conventional synthetic polyacrilonitrile (PAN) fibres. The functional unit was the production of one cubic meter of cementitious composites ready-for-use. The results show that generally the environmental footprint of composite with synthetic fibres is bigger than the footprint of the composites with added natural fibres. Exceptions may only be the impacts on eutrophication and freshwater aquatic ecotoxicity, which are significantly affected by cultivation of crops. Flax and hemp cultivation is associated with emissions to soil and water. For this reason, the composite mixture with flax fibres has a significantly greater impact on eutrophication and freshwater aquatic ecotoxicity than the composite mixture with synthetic fibres. A cementitious composite mixture with sea-grass shows the lowest impacts in all impact categories. The entire life cycle of the studied composites was not included in this research since the life cycle of natural fibre composites is not straightforward and is highly dependent on the durability of the fibres within the matrix.
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Syduzzaman, Md, Md Abdullah Al Faruque, Kadir Bilisik e Maryam Naebe. "Plant-Based Natural Fibre Reinforced Composites: A Review on Fabrication, Properties and Applications". Coatings 10, n. 10 (13 ottobre 2020): 973. http://dx.doi.org/10.3390/coatings10100973.
Abstract (sommario):
The increasing global environmental concerns and awareness of renewable green resources is continuously expanding the demand for eco-friendly, sustainable and biodegradable natural fibre reinforced composites (NFRCs). Natural fibres already occupy an important place in the composite industry due to their excellent physicochemical and mechanical properties. Natural fibres are biodegradable, biocompatible, eco-friendly and created from renewable resources. Therefore, they are extensively used in place of expensive and non-renewable synthetic fibres, such as glass fibre, carbon fibre and aramid fibre, in many applications. Additionally, the NFRCs are used in automobile, aerospace, personal protective clothing, sports and medical industries as alternatives to the petroleum-based materials. To that end, in the last few decades numerous studies have been carried out on the natural fibre reinforced composites to address the problems associated with the reinforcement fibres, polymer matrix materials and composite fabrication techniques in particular. There are still some drawbacks to the natural fibre reinforced composites (NFRCs)—for example, poor interfacial adhesion between the fibre and the polymer matrix, and poor mechanical properties of the NFRCs due to the hydrophilic nature of the natural fibres. An up-to-date holistic review facilitates a clear understanding of the behaviour of the composites along with the constituent materials. This article intends to review the research carried out on the natural fibre reinforced composites over the last few decades. Furthermore, up-to-date encyclopaedic information about the properties of the NFRCs, major challenges and potential measures to overcome those challenges along with their prospective applications have been exclusively illustrated in this review work. Natural fibres are created from plant, animal and mineral-based sources. The plant-based cellulosic natural fibres are more economical than those of the animal-based fibres. Besides, these pose no health issues, unlike mineral-based fibres. Hence, in this review, the NFRCs fabricated with the plant-based cellulosic fibres are the main focus.
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Vigneshwaran, G. Veerakumar, Iyyadurai Jenish e Rajeshwaran Sivasubramanian. "Design, Fabrication and Experimental Analysis of Pandanus Fibre Reinforced Polyester Composite". Advanced Materials Research 984-985 (luglio 2014): 253–56. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.253.
Abstract (sommario):
Due to the light weight, high strength to weight ratio, corrosion resistance and other advantages, natural fibre based composites are becoming important composite materials in mechanical engineering fields. The current project emphasizes the newly identified Pandanus Fibre (Pandanus Fascicularis) which is extracted from the stem of screw pine tree by the manual water treatment process. The mechanical properties of chopped Pandanus fibre by Polyester composites are investigated and compared with the similar natural fibres in the fibre reinforced composite material field. The composite plates were fabricated with raw pandanus fibres by compression moulding method with varying weight percentage and lengths of fibre.
21
Prasad, Lalta, Shiv Kumar, Raj Vardhan Patel, Anshul Yadav, Virendra Kumar e Jerzy Winczek. "Physical and Mechanical Behaviour of Sugarcane Bagasse Fibre-Reinforced Epoxy Bio-Composites". Materials 13, n. 23 (27 novembre 2020): 5387. http://dx.doi.org/10.3390/ma13235387.
Abstract (sommario):
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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Ortega, Raquel, Mario D. Monzón, Zaida C. Ortega e Eoin Cunningham. "Study and fire test of banana fibre reinforced composites with flame retardance properties". Open Chemistry 18, n. 1 (7 aprile 2020): 275–86. http://dx.doi.org/10.1515/chem-2020-0025.
Abstract (sommario):
AbstractThe interest in natural fibre reinforced composites is growing in industrial applications due to natural fibres being an attractive alternative to synthetic fibres. However, it is necessary to improve the fire behaviour of the material because natural fibres have a high combustibility. The objective of this work is to evaluate the fire resistance of polymer composites reinforced with natural fibre fabric, using magnesium hydroxide as flame retardant for the polymeric matrix and alkali treatment for the fibre. The types of fabric are banana, banana with cotton and linen; and long banana fibre has been used for the formation of a nonwoven. The fire test is carried out based on ISO 9773 standard and the effect of the additive has been studied, chemical treatment, type of fabric and number of layers. Through statistical analysis, it is concluded that the flame propagation speed has a decreasing relation with respect to the percentage, but it decreases the mechanical properties considerably. In addition, the number of layers and type of fabric influence the fire properties. Finally, it is concluded that composites reinforced with linen fabric have the best mechanical properties, but banana nonwoven with 60% additive has the best fire behaviour.
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SHEWALE, JITESH, Chandrashekhar Choudhari e Anil Kumar Singh Bankoti. "Carbon and natural fiber reinforced polymer hybrid composite: Processes, applications, and challenges". Journal of Mechanical Engineering and Sciences 16, n. 2 (30 giugno 2022): 8873–91. http://dx.doi.org/10.15282/jmes.10.15282.16.2.2022.06.0702.
Abstract (sommario):
Composites have recently emerged as the ideal material for weight reduction in a wide range of technical applications. Hybrid composites offer special properties that enable them to meet a wide range of design objectives more efficiently and affordably than conventional composites. Natural fiber-based hybrid composites are also less damaging to the environment and have a reduced carbon footprint. The hybridization of natural fibres with synthetic fibres can substantially minimise the problems associated with natural fibre composites, since the advantages of one kind of fibre can outweigh the disadvantages of another. Several research have been carried out to investigate the different characteristics of carbon-natural fibre reinforced hybrid composites and to evaluate their suitability for a variety of technological applications. The objective of this work is to provide an overview of the materials and manufacturing processes currently utilised to fabricate carbon-natural fibre reinforced hybrid composites. This paper also attempts to discuss the reported mechanical, damping, and other characteristics of the resultant hybrid composites. This article provides a factual overview of the development accomplished so far in the field of hybrid composites constructed from carbon-natural fibres.
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Rohit, Ram, Linford Pinto, K. Mallikharjuna Babu, Martin Jebraj e Harsha R. Gudi. "Fabrication and Comparison of Mechanical Properties of Jute and Glass Fibre Reinforced Composites". Applied Mechanics and Materials 592-594 (luglio 2014): 344–48. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.344.
Abstract (sommario):
The properties of fiber reinforced composites (FRP) like high strength to weight ratio, high stiffness to weight ratio, flexibility in design, ease of fabrication with economical savings as compared to metal alloys, make it an excellent choice for various range of products from building materials, sporting equipment, appliances, automotive parts, boats, canoe hulls to bodies for recreational vehicles. In this study the properties of natural fibre composite are compared with composite made of artificial fibres. The natural fibre chosen is jute fibre and the artificial fibre chosen is glass fiber. Polyester resin was the matrix used because of compatibility, cost effectiveness and easy availability. The composites were fabricated by Hand Layup technique and the number of layers of composite laminate was varied as three, four and five. The specimens were subjected to mechanical tests and Young’s Modulus, Ultimate Strength were evaluated. Modal analysis was carried out to determine the damping characteristics through damping ratio. A comparison of the two composites in terms of mechanical properties is made and the results are tabulated.
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Stanciu, Mariana D., Horatiu Teodorescu Draghicescu, Florin Tamas e Ovidiu Mihai Terciu. "Mechanical and Rheological Behaviour of Composites Reinforced with Natural Fibres". Polymers 12, n. 6 (22 giugno 2020): 1402. http://dx.doi.org/10.3390/polym12061402.
Abstract (sommario):
The paper deals with the mechanical behaviour of natural fibre composites subjected to tensile test and dynamic mechanical analysis (DMA). Three types of natural fibre composites were prepared and tested: wood particle reinforced composites with six different sizes of grains (WPC); hemp mat reinforced composites (HMP) and flax reinforced composite with mixed wood particles (FWPC). The tensile test performed on universal testing machine LS100 Lloyd’s Instrument highlights the elastic properties of the samples, as longitudinal elasticity modulus; tensile rupture; strain at break; and stiffness. The large dispersion of stress–strain curves was noticed in the case of HMP and FWPC by comparison to WPC samples which present high homogeneity of elastic–plastic behaviour. The DMA test emphasized the rheological behaviour of natural fibre composites in terms of energy dissipation of a material under cyclic load. Cole–Cole plots revealed the connection between stored and loss heat energy for studied samples. The mixture of wood particles with a polyester matrix leads to relative homogeneity of composite in comparison with FWPC and HMP samples which is visible from the shape of Cole–Cole curves. The random fibres from the hemp mat structure lead to a heterogeneous nature of composite structure. The elastic and viscous responses of samples depend on the interface between fibres and matrix.
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Cullen, Richard K., Mary Margaret Singh e John Summerscales. "Characterisation of Natural Fibre Reinforcements and Composites". Journal of Composites 2013 (18 dicembre 2013): 1–4. http://dx.doi.org/10.1155/2013/416501.
Abstract (sommario):
Recent EU directives (e.g., ELV and WEEE) have caused some rethinking of the life cycle implications of fibre reinforced polymer matrix composites. Man-made reinforcement fibres have significant ecological implications. One alternative is the use of natural fibres as reinforcements. The principal candidates are bast (plant stem) fibres with flax, hemp, and jute as the current front runners. The work presented here will consider the characterisation of jute fibres and their composites. A novel technique is proposed for the measurement of fibre density. The new rule of mixtures, extended for noncircular cross-section natural fibres, is shown to provide a sensible estimate for the experimentally measured elastic modulus of the composite.
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JOLLY, MARC, e KRISHNAN JAYARAMAN. "MANUFACTURING FLAX FIBRE-REINFORCED POLYPROPYLENE COMPOSITES BY HOT-PRESSING". International Journal of Modern Physics B 20, n. 25n27 (30 ottobre 2006): 4601–6. http://dx.doi.org/10.1142/s0217979206041756.
Abstract (sommario):
The renewable characteristic of natural fibres, such as flax, and the recyclable nature of thermoplastic polymers, such as polypropylene, provide an attractive eco-friendly quality to the resulting composite materials. Common methods for manufacturing natural fibre-reinforced thermoplastic composites, injection moulding and extrusion, tend to degrade the fibres during processing. Development of a simple manufacturing technique for these composites, that minimises fibre degradation, is the main objective of this study. Flax fibres were conditioned, cut into lengths ranging from 1 mm to 30 mm with scissors and a pelletiser, and shaped into randomly oriented mats using a drop feed tower. Polypropylene in sheet form, was added to the fibres to furnish polypropylene/flax/polypropylene sandwiches with a fibre mass fraction of 25%, which were then consolidated by the hot pressing technique. Tensile, flexural and impact properties of these composite sheets were determined as functions of fibre length and processing temperature.
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Lee, C. H., A. Khalina, S. H. Lee e Ming Liu. "A Comprehensive Review on Bast Fibre Retting Process for Optimal Performance in Fibre-Reinforced Polymer Composites". Advances in Materials Science and Engineering 2020 (13 luglio 2020): 1–27. http://dx.doi.org/10.1155/2020/6074063.
Abstract (sommario):
Natural fibres are a gift from nature that we still underutilise. They can be classified into several groups, and bast natural fibre reinforcement in polymer composites has the most promising performance, among others. However, numerous factors have reported influences on mechanical properties of the fibre-reinforced composite, including natural fibre retting processes. In this review, bast fibre retting process and the effect of enzymatic retting on the fibre and fibre-reinforced polymer composites have been discussed and reviewed for the latest research studies. All retting methods except chemical and mechanical retting processes are involving secretion of enzymes by bacteria or fungi under controlled (enzymatic retting) or random conditions (water and dew retting). Besides, enzymatic retting is claimed to have more environmentally friendly wastewater products, shorter retting period, and controllable fibre biochemical components under mild incubation conditions. This review comprehensively assesses the enzymatic retting process for producing high-quality bast fibre and will become a reference for future development on bast fibre-reinforced polymer composites.
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Joseph, Kuruvilla, Romildo Dias Tolêdo Filho, Beena James, Sabu Thomas e Laura Hecker de Carvalho. "A REVIEW ON SISAL FIBER REINFORCED POLYMER COMPOSITES". Revista Brasileira de Engenharia Agrícola e Ambiental 3, n. 3 (dicembre 1999): 367–79. http://dx.doi.org/10.1590/1807-1929/agriambi.v3n3p367-379.
Abstract (sommario):
ABSTRACT The global demand for wood as a building material is steadily growing, while the availability of this natural resource is diminishing. This situation has led to the development of alternative materials. Of the various synthetic materials that have been explored and advocated, polymer composites claim a major participation as building materials. There has been a growing interest in utilizing natural fibres as reinforcement in polymer composite for making low cost construction materials in recent years. Natural fibres are prospective reinforcing materials and their use until now has been more traditional than technical. They have long served many useful purposes but the application of the material technology for the utilization of natural fibres as reinforcement in polymer matrix took place in comparatively recent years. Economic and other related factors in many developing countries where natural fibres are abundant, demand that scientists and engineers apply appropriate technology to utilize these natural fibres as effectively and economically as possible to produce good quality fibre reinforced polymer composites for housing and other needs. Among the various natural fibres, sisal is of particular interest in that its composites have high impact strength besides having moderate tensile and flexural properties compared to other lignocellulosic fibres. The present paper surveys the research work published in the field of sisal fibre reinforced polymer composites with special reference to the structure and properties of sisal fibre, processing techniques, and the physical and mechanical properties of the composites.
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M. Haameem, J. A., M. S. Abdul Majid, E. A. H. Engku Ubaidillah, Mohd Afendi, R. Daud e N. A. M. Amin. "Tensile Strength of Untreated Napier Grass Fibre Reinforced Unsaturated Polyester Composites". Applied Mechanics and Materials 554 (giugno 2014): 189–93. http://dx.doi.org/10.4028/www.scientific.net/amm.554.189.
Abstract (sommario):
This paper describes the experimental investigation of the tensile strength of untreated Napier grass fibre reinforced polyester composites. Napier grass fibres were extracted trough conventional water retting process and used as reinforcing materials in the polyester composite laminates. Tensile tests were then conducted for the composite specimens from the laminates at 25% fibre loading using the electronic extensometer setup to obtain the tensile properties. The results show significant differences in tensile strength between random short fibres laminates and random long fibre laminates with the long fibres yield almost 45 % higher in the strength. The laminates also show higher maximum strength compared to other commonly available natural fibre composites with over 70 % increase in the maximum strength compared to the short kenaf fibre reinforced composites.
31
Alam, Md Jahangir, Mohammad Washim Dewan, Sojib Kummer Paul e Khurshida Sharmin. "Investigation of Jute and Glass Fibre Reinforced Hybrid Composites Manufactured through Compression Molding Process". International Journal of Engineering Materials and Manufacture 7, n. 1 (1 gennaio 2022): 35–46. http://dx.doi.org/10.26776/ijemm.07.01.2022.04.
Abstract (sommario):
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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Chegdani, Faissal, Sabeur Mezghani e Mohamed El Mansori. "Correlation between mechanical scales and analysis scales of topographic signals under milling process of natural fibre composites". Journal of Composite Materials 51, n. 19 (13 novembre 2016): 2743–56. http://dx.doi.org/10.1177/0021998316676625.
Abstract (sommario):
This article aims to find the relation between the multiscale mechanical structure of natural fibre reinforced plastic composites and the analysis scales in the topographic signals of machined surfaces as induced by profile milling process. Bamboo, sisal and miscanthus fibres reinforced polypropylene composites were considered in this study. The multiscale process signature of natural fibre reinforced plastic machined surfaces based on wavelet decomposition was determined. Then, the impact of wavelet function was inspected by testing different wavelet shapes. Finally, the analysis of variance was carried out to exhibit the contribution rate of fibre stiffness and tool feed on the machined surface roughness at each analysis scale. Results demonstrate that studying the machining of natural fibre reinforced plastic requires the selection of the relevant scales. They show also the insignificance of the wavelet choice. This study proves that the contribution rate of fibre stiffness and tool feed on machined surface roughness is significantly dependent on the analysis scales, which are directly related to the mechanical properties of natural fibres structure inside the composite.
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Saravanan, K. G., R. Prabu, A. Sivapragasam e Nahom Daniel. "Comparative Analysis of Natural Fibre Reinforced Composite Material Using ANSYS". Advances in Materials Science and Engineering 2021 (31 agosto 2021): 1–17. http://dx.doi.org/10.1155/2021/9391237.
Abstract (sommario):
The regulations of legislative bodies regarding the recycling and reusage of automotive materials has caused a great deal of obligation among automotive manufacturers to use natural fibres or green composites. Green composites or more commonly known as bio-composites are made up of natural fibres. Natural fibres are used by humankind since prehistoric times. The natural fibre is obtained from plants as well as animals. Since the natural fibre is obtained from natural as well as biological resources, it is biodegradable and recyclable. This paper presents the study and analysis conducted to address the suitability of natural fibre in the automotive industry. This paper discusses the finite element analysis of four different natural fibre composites used for making car door panel, i.e., flax, jute, sisal, and leather are taken for the material study. This paper helps to find the effectiveness of each of the four natural fibre composites that have already been used in the automotive sector. This paper includes the analysis of four different natural fibres with and without the addition of the aluminium as the reinforcement material. This project revolves around the design of the composite fibre sheet and analysis of the mechanical parameters such as equivalent stress, shear stress, strain, deformation, and so on. The studies and observations of the analysis showed that the natural fibre with the aluminium reinforcement proved to be much stronger than that without the reinforcement. The results of finite element analysis showcased lowest total deformation and equivalent strain in the flax as 1.026 m and 0.017 mm/mm, respectively. However, sisal showed the lowest equivalent stress and shear stress which were 68.09 and 38.178 MPa, respectively. Additionally, leather showed the highest amount of stress, strain, and deformation, and hence leather was deemed to have undesirable properties regarding the usage in car door panels. All the materials except leather were found to be safe under the loading conditions. Hence, the flax fibre is recommended by the project to have superior properties compared to the other materials.
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Anbupalani, Manju Sri, Chitra Devi Venkatachalam e Rajasekar Rathanasamy. "Influence of coupling agent on altering the reinforcing efficiency of natural fibre-incorporated polymers – A review". Journal of Reinforced Plastics and Composites 39, n. 13-14 (14 aprile 2020): 520–44. http://dx.doi.org/10.1177/0731684420918937.
Abstract (sommario):
Natural fibre-reinforced polymer composites are increasingly replacing commercial composite materials. The limitations of conventional composites materials are overcome by green composites, which are easily available, more eco-friendly and less toxic. In the current scenario, green composites are emerging in the field of material science that involves improving their physical, mechanical and thermal properties. The poor interfacial adhesion and surface incompatibility between natural fibre and biodegradable polymers lead to reduced physico-mechanical properties. In order to overcome this issue, physical and chemical modification methodologies of the natural fibre and polymer matrix are employed, among which the addition of coupling agents has a critical contribution. This paper compiles several recent research works in the utilization of coupling agents such as silane, maleic anhydride, isocyanate, triazine, etc., with the various combinations of natural fibres and polymers. In addition to this, the extents of influence of coupling agents on the characteristics of the natural fibre reinforced composite materials are also reported. This gives an overview for the future researchers to identify the gap in the field of green composite materials and novel coupling agents for different natural fibre/polymer matrix combination.
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Haameem, J. A. M., M. S. Abdul Majid, M. Afendi, M. Haslan Fadli, E. A. Helmi e I. Fahmi. "Tensile and Flexural Strength of Untreated Napier Grass Fibre/Polyester Composites". Materials Science Forum 819 (giugno 2015): 295–300. http://dx.doi.org/10.4028/www.scientific.net/msf.819.295.
Abstract (sommario):
This paper describes the experimental investigation of the tensile and flexural strength of untreated Napier grass fibre reinforced polyester composites. Napier grass fibres were extracted trough conventional water retting process and used as reinforcing materials in the polyester composite laminates. Tensile tests were then conducted for the composite specimens from the laminates at 25% fibre loading using the electronic extensometer setup to obtain the tensile properties. The results show significant differences in tensile strength between random short fibres laminates and random long fibrelaminates with the long fibres yield over 30 % higher in strength.Both the short and long fibre composites exhibits similar strength with short fibres having slightly higher flexural strength to long fibres The laminate also shows higher maximum strength compared to other commonly available natural fibre composites with almost 75 % improved in the maximum strength compared to the short kenaf fibre reinforced composites.
36
Davindrabrabu, Mathivanan, Parlaungan Siregar Januar, Bachtiar Dandi, Mat Rejab Mohd Ruzaimi e Tezara Cionita. "Effect of Fibre Loading on the Flexural Properties of Natural Fibre Reinforced Polymer Composites". Applied Mechanics and Materials 695 (novembre 2014): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amm.695.85.
Abstract (sommario):
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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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, n. 3 (31 marzo 2022): 429–38. http://dx.doi.org/10.22214/ijraset.2022.40581.
Abstract (sommario):
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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Pickering, K. L., Y. Li e R. L. Farrell. "Fungal and Alkali Interfacial Modification of Hemp Fibre Reinforced Composites". Key Engineering Materials 334-335 (marzo 2007): 493–96. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.493.
Abstract (sommario):
The aim of the current work was to investigate using fungi to treat hemp fibre to create better bonding characteristics in natural fibre reinforced polypropylene composites. X-ray diffraction (XRD), lignin testing and scanning electron microscopy (SEM), were used to characterise the effect of treatment on hemp fibres. A combined alkali and fungal treated fibre composite produced the highest tensile strength of 48.3 MPa, an increase of 32% compared to composites with untreated fibre.
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Ajithram, Arivendhan, J. T. Winowlin Jappes, Sudalai Perumal, S. Dinesh Kumar e Madhanagopal Manoharan. "Investigation on Environmentally Polluted Water Hyacinth with Banana Fibre Reinforced Composite Absorption Properties". Materials Science Forum 1112 (8 febbraio 2024): 33–40. http://dx.doi.org/10.4028/p-uafp0k.
Abstract (sommario):
A study of hyacinth plant fibres derived from aquatic wastewater aimed at developing lightweight, durable synthetic materials reinforced with banana fibres. The availability and sustainability of banana fibre make it one of the best choices for natural fibres. Traditional materials are extremely heavy, heavy, and expensive when compared to banana fiber materials. Their strength, lightness, and affordability make them ideal for this purpose. Recently, natural fibres have gained attention from scientists as reinforcement materials for polymeric composites and technical applications. There are many advantages to using natural fibres, including continuous supply, easier handling, and biodegradability. Particle boards on the market have a lower hardness strength than banana fibre composite boards. ASTM standards determine parameters such as hardness strength and absorption. According to their hardness strength, banana composites have hardness values of 95 shore D. The absorption levels of banana composites can be increased by 15 to 30%, depending on reinforcement. Compared to the other samples, 30% of the composite samples were able to achieve the high performance. The use of metal as a wood alternative for automobile bodies has been found to be promising in a number of applications.
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Rayyaan, Rishad, William Richard Kennon, Prasad Potluri e Mahmudul Akonda. "Fibre architecture modification to improve the tensile properties of flax-reinforced composites". Journal of Composite Materials 54, n. 3 (17 luglio 2019): 379–95. http://dx.doi.org/10.1177/0021998319863156.
Abstract (sommario):
As far as the tensile properties of natural fibres as reinforcements for composites are concerned, flax fibres will stay at the top-end. However, an efficient conversion of fibre properties into their corresponding composite properties has been a challenge, due to the fibre damages through the conventional textile methods utilised to process flax. These techniques impart disadvantageous features onto fibres at both micro- and meso-scale level, which in turn degrade the mechanical performances of flax fibre-reinforced composites (FFRC). Undulation of fibre is one of those detrimental features, which occurs during traditional fibre extraction from plant and fabric manufacturing routes. The undulation or waviness causes micro-compressive defects or ‘kink-bands’ in elementary flax fibres, which significantly undermines the performances of FFRC. Manufacturing flax fabric with minimal undulation could diminish the micro-compressive defects up to a substantial extent. In this research, nonwoven flax tapes of highly aligned flax fibres, blended with a small proportion of polylactic acid have been manufactured deploying a novel technique. Composites reinforced from those nonwoven tapes have been compared with composites reinforced with woven Hopsack fabrics and warp knitted unidirectional fabrics from flax, comprising undulating fibres. The composites reinforced with the highly aligned tapes have shown 33% higher fibre-bundle strength, and 57% higher fibre-bundle stiffness in comparison with the composites reinforced with Hopsack fabric. The results have been discussed in the light of fibre undulation, elementary fibre individualisation, homogeneity of fibre distribution, extent of resin rich areas and impregnation of the fibre lumens.
41
Bichang’a, DO, FO Aramide, IO Oladele e OO Alabi. "A Review on the Parameters Affecting the Mechanical, Physical, and Thermal Properties of Natural/Synthetic Fibre Hybrid Reinforced Polymer Composites". Advances in Materials Science and Engineering 2022 (12 marzo 2022): 1–28. http://dx.doi.org/10.1155/2022/7024099.
Abstract (sommario):
The global drive towards a circular economy that emphasizes sustainability in production processes has increased the use of agro-based raw materials like natural fibres in applications that have long been dependent on inorganic raw materials. Natural fibres provide an eco-friendly, more sustainable, and low cost alternative to synthetic fibres that have been used for a long time in the development of composite materials. However, natural fibres are associated with high water absorption capacity due to their hydrophilic nature leading to poor compatibility with hydrophobic polymeric matrices, thus lower mechanical properties for various applications. Hybridization of natural fibres with synthetic fibres enhances the mechanical performance of natural fibres for structural and nonstructural applications such as automobile, aerospace, marine, sporting, and defense. There have been increased research interests towards natural/synthetic fibre hybrid composites in the past two decades (2001–2021) to overcome the identified limitations of natural fibres. Therefore, understanding the parameters affecting the properties and potential of using natural and synthetic fibre reinforcements to develop hybrid composites is of great interest. The review showed that using appropriate fibre orientation, fibre weight fraction and stacking sequence yields good mechanical, physical, and thermal properties that are competitive with what only synthetic fibre reinforced composites can achieve. In addition, these properties can be improved through pretreatment of natural fibres using different chemicals. This paper provides in review form the parameters affecting the mechanical, physical, and thermal properties of natural/synthetic fibre hybrid reinforced polymer composites from the year 2001 to 2021.
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Sumithra, H., e B. Sidda Reddy. "A review on tribological behaviour of natural reinforced composites". Journal of Reinforced Plastics and Composites 37, n. 5 (22 dicembre 2017): 349–53. http://dx.doi.org/10.1177/0731684417747742.
Abstract (sommario):
In the past, asbestos and copper were preferred as friction materials because they have good ability to dissipate heat, but have proven to be harmful to environment. Recently, more researches are focused on non-asbestos friction composite materials due to its non-toxicity and biodegradability. Despite synthetic fibre composites having eco-friendly nature, because of its cost and pollution most of the researchers show interest on natural fibre composites. Hence, there is a need to explore the analysis on the tribologicaal behaviour of composite materials. The aim of this review is to provide overview of literature survey on the tribological characteristics such as friction, wear and lubrication of both particulate reinforced composites and fibre reinforced composites. In addition, operating and material parameters that influence tribological behaviour are also explored. Results reveal that operating parameters like normal load, sliding velocity, sliding distance, temperature and material parameters like particle size, volume fraction, fibre orientation, fibre length, surface treatment and aspect ratio have a significant effect on tribo characteristics.
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Dan-mallam, Yakubu, Mohamad Zaki Abdullah e Puteri Sri Melor Megat Yusoff. "Mechanical Properties of Short and Continuous Kenaf/Pet Fibre Reinforced Polyoxymethylene Composite". Advanced Composites Letters 24, n. 4 (luglio 2015): 096369351502400. http://dx.doi.org/10.1177/096369351502400404.
Abstract (sommario):
The challenges of improving the mechanical properties of natural fibre composites cannot be over emphasized due to fibre geometry, poor fiber distribution in the matrix, the hydrophilic nature of natural fibers and poor fibre–matrix interfacial adhesion. The primary objective of this research is to study the influence of fibre length on mechanical properties of kenaf/PET fibre reinforced POM and to study the effect of hybridization on mechanical properties of the composites. The composites were produced by compression molding and subsequently subjected to tensile, flexural and impact tests according to their respective ASTM standards. The tensile strength of short POM/kenaf/PET (80/10/10) hybrid composite dropped by approximately 33% from 61.8 MPa to 41.3 MPa compared to neat POM. However, the tensile strength of continuous POM/kenaf composites increased significantly by approximately 127% and 107% for 70/30 and 80/20 compositions compared to neat POM. The flexural moduli of short POM/kenaf/PET (70/15/15) hybrid composite and continuous POM/kenaf (70/30) composite improved by approximately 41% and 29%, respectively. The impact strength substantially increased by nearly 161% in continuous POM/kenaf/PET (70/15/15) hybrid composite and 30% in POM/kenaf (80/20) composite. The results show that tensile, flexural and impact properties of the continuous POM/kenaf composites are superior to the short fiber composites, and the influence of hybridization, made a positive impact by enhancing the flexural and impact properties of the composites.
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Crăciun, Andrei Lucian, e Camelia Pinca-Bretotean. "Advanced Materials with Natural Fibred Reinforced Aluminiu Composite for Automotive Brake Disc". Solid State Phenomena 254 (agosto 2016): 91–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.254.91.
Abstract (sommario):
The automotive brake disc is a device for slowing or stopping the motion of a wheel while it runs at a certain speed. The widely used brake disc material is cast iron which consumes much fuel due to its high specific gravity. To reduce automobile weight and improve fuel efficiency, the automotive industry has increased the use of aluminium in light vehicles in recent years. The aim of this paper is to develop new natural fibre reinforced aluminium composite for automotive brake disc.Different laboratory formulations were prepared with varying coconut fibre, friction modifiers, abrasive material and solid lubrificant using powder mettallurgy techique for the developement of new natural fibre reinforce aluminiu composites. The analysis led that natural coconut fibre is a potential candidate fiber or filler material for the automotive brake disc.
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Begum, K., M. A. Islam e M. M. Huque. "Investigation on the Tensile and Flexural Properties of Coir-fibre-reinforced Polypropylene Composites". Journal of Scientific Research 7, n. 3 (1 settembre 2015): 97–111. http://dx.doi.org/10.3329/jsr.v7i3.23075.
Abstract (sommario):
The utilization of natural fibres as reinforcement in polymer composites has been increased significantly for their lightweight, low cost, high specific strength, modulus and biodegradable characteristic. In this present work, the mechanical properties of randomly distributed short coir-fibre-reinforced polypropylene (PP) composites have been studied as a function of fibre loading. In order to improve the composites mechanical properties, raw coir fibres were treated with 1% alkali (NaOH) solution. Both raw and alkali treated coir-fibre-reinforced PP composites were prepared with different fibre loadings (10, 15, 20, 25, 30 and 35 wt%) using a double roller open mixer machine and injection molding machine. The mechanical properties, such as tensile strength (TS), tensile modulus (TM), flexural strength (FS) and flexural modulus (FM) were investigated for the prepared composites. The alkali treated coir-fibre-reinforced PP composites showed better results in mechanical properties compared to untreated composites. Finally, the optical microscopic studies were carried out on fractured surfaces of the tensile test specimens, which indicated weak interfacial bonding between the fibre and the polymer.
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Aravindh, S., e K. Umanath. "Delamination in Drilling of Natural Fibre Reinforced Polymer Composites Produced by Compression Moulding". Applied Mechanics and Materials 766-767 (giugno 2015): 796–800. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.796.
Abstract (sommario):
Natural fibre composites today are replacing synthetic fibre composites due to superior properties of natural fibres such as low density, high specific strength and modulus, relative no abrasiveness, ease of fibre surface modification, and wide availability .Drilling is often required to facilitate the assembly of the parts to get the final product. however, drilling composite materials present a number of problems such as delamination associated with the characteristics of the material and with the used cutting parameters .The present investigation is an attempt to study the factors and combination of factors that influence the delamination of drilled unidirectional jute fibre reinforced composites using taguchi, signal to noise ratio, Anova analysis and to achieve the conditions for minimum delamination.
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Santhanam, V., e M. Chandrasekaran. "Effect of Surface Treatment on the Mechanical Properties of Banana-Glass Fibre Hybrid Composites". Applied Mechanics and Materials 591 (luglio 2014): 7–10. http://dx.doi.org/10.4028/www.scientific.net/amm.591.7.
Abstract (sommario):
Natural fibre reinforced composites have attracted the attention of research community mainly because they are turning out to be an alternative to synthetic fibre. Various natural fibres such as jute, sisal, palm, coir and banana are used as reinforcements. In this paper, banana fibres and glass fibres have been used as reinforcement. Hybrid epoxy polymer composite was fabricated using chopped banana/glass fibre and the effect of alkali treatment was also studied. It is found that the alkali treatment improved the mechanical properties of the composite.
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Nirmal, Kumar Jayachandran, e D. Premkumar. "Assessing of Mechanical Properties of Natural Fiber Reinforced Polymer Matrix Hybrid Composites". Applied Mechanics and Materials 766-767 (giugno 2015): 199–204. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.199.
Abstract (sommario):
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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Saw, Sudhir Kumar, e Chandan Datta. "Thermomechanical properties of jute/bagasse hybrid reinforced epoxy thermoset composites". BioResources 4, n. 4 (14 settembre 2009): 1455–76. http://dx.doi.org/10.15376/biores.4.4.1455-1476.
Abstract (sommario):
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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KondalaRao, Peram, Bosle Manohar, Hanumanth Raghavendera, M. Vamshi Kumar, Ram Subbiah e Musheer Vaqur. "Fabrication and properties valuation of Natural fiber and filler-based hybrid-polymer composites". E3S Web of Conferences 430 (2023): 01145. http://dx.doi.org/10.1051/e3sconf/202343001145.
Abstract (sommario):
Because of biodegradability, low weight, non-da000nger, instability, decreased condition, contamination, little effort, and simplicity of recyclability, natural fibre polymer composites are now being utilized in place of synthetic fibre reinforced polymer composites. By altering the fibre and epoxy percentages, to find the effect of sisal fibre content on mechanical characteristics of composites is the objective of research. Melt-mixing was used to make the composite, which was then laid out by hand layup method. The purpose of this research is to look at fibre oriented reinforced composite polymer nano composite materials that mix with hybrid composites such as JUTE, SISAL/EGG SHELL, and epoxy polymer in the ratio of sisal fibre 70% + jute 20% + Egg shell 10% and sisal fibre 60% + jute 20% + Egg shell 20% by volume. The mechanical characteristics were calculated by performing tests on the specimen’s tension, hardness, and flexural qualities in line with ASTM standards.