Predicting the tensile strength of natural fibre reinforced thermoplastics

2007 ◽  
Vol 67 (11-12) ◽  
pp. 2454-2466 ◽  
Author(s):  
Angelo G. Facca ◽  
Mark T. Kortschot ◽  
Ning Yan
Keyword(s):  
Tensile Strength ◽  
Natural Fibre ◽  
Reinforced Thermoplastics

Fabrication and Characterization of Biocomposite Using Grewia Optiva Fibre (i.e. Bhimal) Reinforced Polyvinyl Alcohol (PVA)

2015 ◽  
Vol 1105 ◽  
pp. 51-55 ◽  
Author(s):  
K.M. Gupta ◽  
Kishor Kalauni
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Natural Fibre ◽  
Fabrication Method ◽  
View Point ◽  
Engineering Material ◽  
Fibre Composites ◽  
Grewia Optiva ◽  
Fabrication And Characterization

Bhimal fibres are quite a newer kind of bio-degradable fibres. They have never been heard before in literatures from the view point of their utility as engineering material. These fibres have been utilized for investigation of their properties. Characterization of this fibre is essential to determine its properties for further use as reinforcing fibre in polymeric, bio-degradable and other kinds of matrix. With this objective, the fabrication method and other mechanical properties of Bhimal-reinforced-PVA biocomposite have been discussed. The stress-strain curves and load-deflection characteristics are obtained. The tensile, compressive, flexure and impact strengths have been calculated. The results are shown in tables and graphs. The results obtained are compared with other existing natural fibre biocomposites. From the observations, it has been concluded that the tensile strength of Bhimal-reinforced-PVA biocomposite is higher than other natural fibre composites. Hence these can be used as reinforcement to produce much lighter weight biocomposites.

scholarly journals Effects of water absorption on the mechanical properties of hybrid natural fibre/phenol formaldehyde composites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sekar Sanjeevi ◽  
Vigneshwaran Shanmugam ◽  
Suresh Kumar ◽  
Velmurugan Ganesan ◽  
Gabriel Sas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Water Absorption ◽  
Hybrid Composites ◽  
Phenol Formaldehyde ◽  
Natural Fibre ◽  
The Other ◽  
Fibre Reinforcement ◽  
Dry Conditions

AbstractThis investigation is carried out to understand the effects of water absorption on the mechanical properties of hybrid phenol formaldehyde (PF) composite fabricated with Areca Fine Fibres (AFFs) and Calotropis Gigantea Fibre (CGF). Hybrid CGF/AFF/PF composites were manufactured using the hand layup technique at varying weight percentages of fibre reinforcement (25, 35 and 45%). Hybrid composite having 35 wt.% showed better mechanical properties (tensile strength ca. 59 MPa, flexural strength ca. 73 MPa and impact strength 1.43 kJ/m2) under wet and dry conditions as compared to the other hybrid composites. In general, the inclusion of the fibres enhanced the mechanical properties of neat PF. Increase in the fibre content increased the water absorption, however, after 120 h of immersion, all the composites attained an equilibrium state.

scholarly journals Better Wettability of Pandanus Utilis Alkaline Treated Fibres Tead to Higher Tensile Strengths of Composites.

2021 ◽  
Author(s):  
Laurent L'Entete ◽  
Hareenanden Ramasawmy
Keyword(s):  
Tensile Strength ◽  
Composite Materials ◽  
Carbon Footprint ◽  
Fibre Length ◽  
Natural Fibre ◽  
Engineering Properties ◽  
Aggressive Treatment ◽  
High Carbon ◽  
Reinforcing Agent ◽  
Internal Angle

Abstract Composite materials made with synthetic fibres like E-glass, Kevlar or carbon have helped to provide a wide array of products to society with specific engineering properties. However, these materials have a high carbon footprint as well as being non-biodegradable. The use of natural fibre, as a substitution to these man-made fibres, has been studied and encouraging results are being obtained.In this study, the use of ‘Pandanus utilis’ fibre as a reinforcing agent in plastic was investigated with the aim of exploring specific properties such as the tensile strength of the fibre, its wettability and the effect of fibre length after treating the fibre with two different NaOH solutions. Results have shown that better reinforcement was obtained for the composites (11.10 ± 2.53MPa) with fibres subjected to a more aggressive treatment (2.5%NaOH for 2h) compared to the composite made with fibres having maximum tensile strength (168 ± 12MPa at 0.5% NaOH for 14h), due to a better hydrophilicity of the alkaline treated fibre (87.37° internal angle). Within the range of short chopped fibre length tested (6 to 15 mm), it was shown that there was a general decrease in the tensile strength of the composite.

Reinforced thermoplastic fasteners

2021 ◽  
pp. 135-148
Author(s):  
А.В. Чесноков ◽  
В.Н. Андреев ◽  
И.А. Тимофеев
Keyword(s):  
Tensile Strength ◽  
Truss Structures ◽  
Load Bearing ◽  
Domestic Production ◽  
Aerospace Technology ◽  
Reinforced Thermoplastics

Обоснована актуальность применения армированных термопластов для изготовления крепежа для аэрокосмической техники. Разработана технология получения крепежа для соединения трехслойных панелей из угленаполненного (40%) полиэфирэфиркетона импортного и отечественного производства. Проведены исследования полученного крепежа. Полученные результаты применены в разработке технологии изготовления крепежа для несущих ферменных конструкций поддерживающих кабельную разводку на космических аппаратах. Средняя удельная прочность крепежа на разрыв составляет 115 МПа·см/г, что определяет перспективность применения его в конструкциях аэрокосмической техники. На крепеж получены Технические условия «Детали крепежные армированные». The relevance of the use of reinforced thermoplastics for the manufacture of fasteners for aerospace equipment is substantiated. A technology has been developed for obtaining fasteners for joining three-layer panels made of carbon-filled (40%) polyetheretherketone of foreign and domestic production. The research of the received fasteners has been carried out. The results obtained are used in the development of a technology for the manufacture of fasteners for load-bearing truss structures that support cabling on spacecraft. The average specific tensile strength of the fastener is 115 MPa cm/g, which determines the prospects of its application in the structures of aerospace technology. The technical conditions «Reinforced fastening parts» were received for the fasteners.

Effect of Water Absorption Behaviour on Tensile Properties of Hybrid Jute-Roselle Woven Fibre Reinforced Polyester Composites

2021 ◽  
Vol 18 (4) ◽  
Author(s):  
Agung Efriyo Hadi ◽  
Tezara Cionita ◽  
Deni Fajar Fitriyana ◽  
Januar Parlaungan Siregar ◽  
Ahmed Nurye Oumer ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Fibre Composite ◽  
Unsaturated Polyester ◽  
Water Immersion ◽  
Tensile Modulus ◽  
Natural Fibre ◽  
Jute Fibre ◽  
Thickness Swelling ◽  
Effect Of Water

Incorporating natural fibre as reinforcement in the polymer matrix has shown a negative effect since the natural fibre is hydrophilic. The natural fibre easily absorbs water which causes an effect on the mechanical properties of the composites. The objective of this paper is to investigate the water absorption behaviour of hybrid jute-roselle woven fibre reinforced unsaturated polyester composite and the effect of water absorption in terms of tensile strength and tensile modulus. The effect of hybrid composite on the thickness swelling will be tested. The fabrication method used in this study is the hand lay-up technique to fabricate 2-layer and 3-layer composites with layering sequences of woven jute (J)/roselle (Ro) fibre. The results of the study showed that pure roselle fibres for 2 and 3-layer composites have the highest water absorption behaviour 3.86% and 5.51%, respectively, in 28 days) as well as thickness swelling effect, whereas hybrid J-Ro and J-J-Ro composites showed the least water absorption (2.65% and 3.76%, respectively) in 28 days) in both the tests. The hybridisation between jute and roselle fibres reduced water absorption behaviour and improved the fibres dimensional stability. The entire composites showed a decreasing trend for both tensile strength and tensile modulus strength after five weeks of water immersion. Jute fibre composite hybridised with roselle fibre can be used to reduce the total reduction of both tensile strength and tensile modulus throughout the whole immersion period. Moreover, the tensile testing showed that jute fibre composite hybridised with roselle fibre have produced the strongest composite with the highest tensile and modulus strength compared to other types of composites. The hybridisation of diverse fibre reinforcements aids in minimising the composite water absorption and thickness swelling, hence reducing the effect of tensile characteristics.

Tensile Properties of Pineapple Leaf Fibre Reinforced Unsaturated Polyester Composites

2014 ◽  
Vol 695 ◽  
pp. 159-162 ◽  
Author(s):  
Januar Parlaungan Siregar ◽  
Tezara Cionita ◽  
Dandi Bachtiar ◽  
Mohd Ruzaimi Mat Rejab
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Fiber Length ◽  
Interfacial Adhesion ◽  
Unsaturated Polyester ◽  
Fibre Length ◽  
Tensile Modulus ◽  
Natural Fibre ◽  
Fibre Content ◽  
Polyester Composites

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.

Fabrication and Testing of Abaca Fibre Reinforced Epoxy Composites for Automotive Applications

2013 ◽  
Vol 718-720 ◽  
pp. 63-68 ◽  
Author(s):  
Raja R. Niranjan ◽  
S. Junaid Kokan ◽  
R. Sathya Narayanan ◽  
S. Rajesh ◽  
V.M. Manickavasagam ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Natural Fiber ◽  
Fibre Composite ◽  
Fiber Composite ◽  
Salt Water ◽  
Natural Fibers ◽  
Natural Fibre ◽  
Industrial Applications ◽  
Vertical Orientation ◽  
The Matrix

The natural fibre composite materials are nowadays playing a vital role in replacing the conventional and synthetic materials for industrial applications. This paper proposes a natural fiber composite made of Abaca fibre as reinforcing agent with Epoxy resin as the matrix, manufactured using Hand Lay-up method. Glass Fiber Reinforced Plastics (woven rovings) are used to improve the surface finish and impart more strength and stiffness to natural fibers. In this work, the fibers are arranged in alternative layers of abaca in horizontal and vertical orientation. The mechanical properties of the composite are determined by testing the samples for tensile and flexural strength. It is observed that the tensile strength of the composite material is dependent on the strength of the natural fiber and also on the interfacial adhesion between the reinforcement and the matrix. The composite is developed for automobile dashboard/mudguard application. It may also be extended to biomedical, electronics and sports goods manufacturing. It can also be used in marine products due to excellent resistance of abaca to salt water damage since the tensile strength when it is wet.

Waste paper as a cheap source of natural fibre to reinforce polyester resin in production of bio-composites

2016 ◽  
Vol 36 (5) ◽  
pp. 441-447 ◽  
Author(s):  
Sekhar Das ◽  
Santanu Basak ◽  
Manik Bhowmick ◽  
Sajal K. Chattopadhyay ◽  
Manoj G. Ambare
Keyword(s):  
Tensile Strength ◽  
Polyester Resin ◽  
Low Cost ◽  
Crystallinity Index ◽  
Natural Fibre ◽  
Sem Analysis ◽  
Fibre Content ◽  
Waste Paper ◽  
Fibre Direction ◽  
Composite Samples

Abstract A low cost composite material was prepared by using waste newspaper and polyester resin. The waste newspaper used in the study was characterized by chemical and X-ray diffraction (XRD) methods, and tensile strength was measured. Waste newspaper contains holocellulose of about 83.2% and the crystallinity index of the newspaper is 64.2. Composite samples were fabricated with three different fibre contents, namely 25%, 33%, and 48% (by weight). It was observed that on increasing the fibre content from 25% to 48%, the tensile strength and the modulus also increased by 54%–40%, respectively, along the fibre direction. It was observed that with 48% (w/w) fibre content, the waste paper composite yielded 70 MPa tensile strength and 6 GPa modulus in the fibre direction and 19 MPa tensile strength and 2.41 GPa modulus in the cross direction. The newspaper composite samples were characterized by thermogravimetric analysis, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) analysis.

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