Influence of Stacking Sequences on Tensile Behaviour of Areca-Kenaf Hybrid Epoxy Composite (original) (raw)
Related papers
3RD INTERNATIONAL POSTGRADUATE CONFERENCE ON MATERIALS, MINERALS & POLYMER (MAMIP) 2019, 2020
Hybrid composites from combinations of synthetic and natural fibers have experienced a considerable interest among researchers due to its excellent characteristics. One of the drivers for this development owing to the ability of synthetic and natural fibers to compensate for the limitation of one another. Thus, the current effort works on the fabrication of hybrid composites from combinations of carbon fiber (C) and kenaf fiber (K) with epoxy resin using the vacuum infusion method. The stacking sequences of fibers were varied to KKKKK, CKCKC, KCKCK, and CCKCC. The effects of hybridization and stacking sequences on mechanical properties of fabricated hybrid composites were examined under tensile and flexural tests. The result shows that the tensile and flexural properties of manufactured hybrid composites were enhanced by introducing hybridization with carbon fiber. The highest tensile were obtained in the CKCKC hybrid sample, whereas, the highest flexural properties were observed in the CCKCC hybrid sample. Besides, tensile fractured and flexural modes of failures were characterized using a scanning electron microscope (SEM) and optical microscope (OM), respectively.
Polímeros
This paper investigates the stacking sequence of combined natural and synthetic fibres reinforced epoxy composites for better mechanical properties. The hybrid composites fabricated using vacuum assisted compression molding process with the natural and synthetic fibres layered in three different sequences such as type I, type II and type III where the synthetic fibers were placed alternatively. The ultimate tensile strength of composite type III was increased by 12% and 30% when compared to composite type I and type II respectively. The flexural test results showed that composite type III have better flexural strength 223 MPa which is 13% and 11% greater than composite type I and type II respectively. Overall, it can be declared that the composite type III shows better tensile, and flexural properties i.e., the composite with aloe vera and palmyra palm fibres have better wettability with the matrix when compared to bamboo fibre.
Journal of Polymer Research, 2018
Natural fiber composite laminates are nowadays used in structural application such as aerospace, automobile and in sports goods because of their high strength to weight ratio and renewability. Hence the study of mechanical behaviors of natural fiber composites is very important in using these composite laminates for such specific applications. This project aims at identifying the mechanical properties of hybrid natural Jute/Kenaf fiber. The major drawbacks in natural fiber are its Resin incompatibility. Surface treatment of fiber is made to improve the interfacial bonding between the fiber and resin and to reduce the moisture absorption. Laminates are fabricated using Hand lay-up technique. Mechanical properties such as tensile, flexural, and Impact test for jute/kenaf hybrid laminates were obtained. Specimen preparation and Mechanical property testing were carried out as per ASTM standards. Micro structures of the different layer of hybrid specimens are scanned by the Scanning Electron Microscope.
Mechanical Behavior of Areca Fiber Reinforced Epoxy Composites
ABSTRACT: In the present work, the mechanical properties of composites obtained by using areca fibers in epoxy matrix have been investigated. The areca fibers extracted from the areca husk are alkali-treated with potassium hydroxide to get better interfacial bonding between fibers and matrix. The test specimens are prepared with different values of weight ratio of fiber to matrix, the fibers being randomly oriented. The test specimens are cured for different periods of time to study the effect of curing time on the mechanical properties. The results of tests such as water absorption, tension, compression, bending, impact, and hardness conducted on the test specimens are herein reported. It is found that the mechanical properties of the composites tested are greatly influenced by (i) alkali treatment of fiber, (ii) weight ratio of fiber–matrix, and (iii) curing time. C 2011 Wiley Periodicals, Inc. Adv Polym Techn 31: 319–330, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/adv.20255
EVALUATING THE MECHANICAL PROPERTIES OF NATURAL FIBRE COMPOSITE FOR AUTOMOBILE STRUCTURE
The natural fiber are currently replacing the synthetic fiber for automobile structural application. This paper evaluates mechanical strength of varying stacking sequences of the Natural fiber reinforced with polymer matrix composites and find applications in many fields of industrial applications. In this study the abaca and kenaf fibers are incorporated with carbon fiber by using epoxy matrix hybrid composite has prepared. We are using to fabricate the component by hand layup technique with desired composite. The structure of the composite is such that abaca is present in the centre of the composite, kenaf in the middle and carbon fiber as the outer skin provided higher mechanical strength. Natural fibers are used in the woven form to increase the strength of the produced composite material. It was found that the abaca-kenaf-carbon fiber has better properties than abaca-kenaf fiber alone and used to fabricate the automobile structure.
Mechanical Performance of Modified Epoxy Reinforced Hybrid Natural Fiber Composite
Jurnal Teknologi, 2015
Kenaf fiber that is known as Hibiscus cannabinus, L. family Malvaceae is an herbaceous plant that can be grown under a wide range of weather conditions. The usage of kenaf fibers as a reinforcement material in the polymeric matrix has been widely investigated. In this research, liquid epoxidized natural rubber (LENR) was introduced to the epoxy to increase its toughness. Hybrid kenaf/carbon fibers, with different kenaf/carbon ratio weight, were used to reinforce the epoxy resins (with and without addition of epoxidized natural rubber) as the matrices. The flexural strength, flexural modulus and fracture toughness of the rubber toughened epoxy reinforced hybrid kenaf/carbon fiber composites were investigated. The results showed that the addition of liquid epoxidized natural rubber (LENR) had improved the flexural strength, flexural modulus and fracture toughness by 9.6%, 13.7%, and less 2% respectively at the ratio of 16:4 wt% fibre loading
The natural fiber composite fabrication has been a highly preferred field of research due to its unique properties like low mass density, stiffness, light in weight, low budget, easy obtainability and exceptional mechanical properties. These properties had found many applications in aircraft, space, automotive, sporting goods etc. The natural hybrid composites are the centre of attention for researchers as it serves in various engineering applications as asubstitute to commonly used synthetic fiber composites. The motive of this project is to study and enquire the tensile and flexural properties of Kenaf/Pineapple natural hybrid fiber with reinforced epoxy resin experimentally. The mechanical properties of Kenaf fiber are enhanced by incorporating the kenaf fiber with pineapple fiber. These hybridisations of fibres are made at different weight fractions and are incorporated with the mixture of resin epoxy LY556 and hardener HY951 by hand layup techniques. ASTM (American Society for Testing and Materials) standards were strictly followed for the preparation and testing of the tensile and flexural test specimens.
Study the Mechanical Properties of Hybrid Reinforced Epoxy Composites
The natural fiber composites in India based on a two pronged strategy of preventing depletion of forest resource as well as ensuring good economic returns for natural fibers. Kenaf & Sisal based composite developed as substitutes for plywood & medium density fiber boards. In this project natural fiber composites fabricated, by combining materials of Kenaf & sisal in chopped form by hand lay method. In this composite, Epoxy resin used as a matrix material. The NFR composite made in different fiber volume fraction such as 12.5% of Kenaf and 12.5% sisal, 15% of Kenaf and 15% sisal, 17.5% of Kenaf and 17.5% sisal. The mechanical properties of this sample investigated according to the ASTM standards. From the result it observed that the 12.5% of Kenaf and 12.5% of sisal fiber reinforcement showed the highest flexural strength among the other fiber volume fraction.
Materials Today: Proceedings
The present study deals with the effect of nanofiller (fumed silica) content and layer sequence of bidirectional woven fabrics on the physical and mechanical properties of Jute (J)-Kevlar (K)-Fumed silica epoxy-based hybrid composite. Jute fibers are treated with alkali to improve surface properties. Twenty number of composite samples are prepared to have five different layer sequences (i.e., Jute-Jute-Jute-Jute [JJJJ], Jute-Kevlar-Kevlar-Jute [JKKJ], Kevlar-Jute-Jute-Kevlar [KJJK], Jute-Kevlar-Jute-Kevlar [JKJK] and Kevlar-Kevlar-Kevlar-Kevlar [KKKK]) and four nanofiller contents (i.e., 0%, 1.5%, 3%, and 4.5%). The mechanical properties of the composites like tensile strength, flexural strength, inter-laminar shear strength, and density have been evaluated. From the result, it is observed that the mechanical properties of the composites are significantly influenced by layer sequence and filler content. The study has also attempted to find out optimum layer sequence and filler content for obtaining the best mechanical performance of the composites using TOPSIS multi-criteria decision-making approach. It is found that Jute-Kevlar-Jute-Kevlar (JKJK) with 1.5% filler, i.e., composite with alternate layers of jute and kevlar with 1.5% fumed silica filler has superior properties than other composites.
2012-Mechanical Behavior of Areca Fiber Reinforced Epoxy Composites.pdf
In the present work, the mechanical properties of composites obtained by using areca fibers in epoxy matrix have been investigated. The areca fibers extracted from the areca husk are alkali-treated with potassium hydroxide to get better interfacial bonding between fibers and matrix. The test specimens are prepared with different values of weight ratio of fiber to matrix, the fibers being randomly oriented. The test specimens are cured for different periods of time to study the effect of curing time on the mechanical properties. The results of tests such as water absorption, tension, compression, bending, impact, and hardness conducted on the test specimens are herein reported. It is found that the mechanical properties of the composites tested are greatly influenced by (i) alkali treatment of fiber, (ii) weight ratio of fiber-matrix, and (iii) curing time. C 2011 Wiley Periodicals, Inc. Adv Polym Techn 31: 319-330, 2012; View this article online at wileyonlinelibrary.com.