PROCESSING AND CHARACTERIZATION OF GLASS FIBER AND CARBON FIBER REINFORCED VINYL ESTER BASED COMPOSITES (original) (raw)
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Journal of Applied …, 2008
The article describes the effect of structure of vinyl ester resins (VE) on the mechanical properties of neat sheets as well as glass fabric-reinforced composites. Different samples of VE were prepared by reacting ester of hexahydrophthalic anhydride (ER) and methacrylic acid (MAA) (1 : 1 molar ratio) followed by reaction of monomethacrylate terminated epoxy resin with glutaric (E) or adipic (F) or sebacic acid (G) (2 : 1 molar ratio). The neat VE were diluted with styrene and sheets were fabricated by using a glass mold. A significant reduction in the mechanical properties was observed by increasing the methylene content of resin backbone (i.e., sample E to G). Glass fabric-reinforced composites were fabricated by vacuum assisted resin transfer molding (VARTM) technique. Resin content in the laminates was 50 6 5 wt %. Increase in the number of methylene groups in the vinyl ester resin (i.e., increasing the bridge length) did not show any significant effect on limiting oxygen index (LOI) value (21 6 1) of the laminates but tensile strength, tensile modulus, flexural strength, and flexural modulus all increased though these values are significantly lower than observed in laminates based on resin B.
Silicon, 2019
The manufacturing of the composite material has been developed tremendously over the years due to its superior properties like low density, stiffness, lightweight and excellent mechanical as well as physical properties. These exceptional properties of composite materials have found its applications widely in aerospace, automotive, marine and many more engineering areas. The synthesis of the varieties of composites is continuously lookout without compromising its mechanical and physical properties. This paper deals in with synthesis as well as mechanical properties (Tensile Strength, Flexural Properties and Fatigue) of Glass-Epoxy as well as Glass-Vinyl Ester composites. The resins used in combination of composites were epoxy as well as Vinyl Ester while the reinforced material was glass fibers. The ultimate tensile strength in Glass-Epoxy composite was observed from 330 to 370 MPa while it was 270 to 330 MPa for Glass-Vinyl Ester Composites. Glass-Epoxy composites showed a 32% increase in flexural strength due to post-curing strength while it was 16% in case of Glass-Vinyl Ester Composites. The results of the fatigue analysis of composites indicate faster growth of cracks and defects at higher frequencies which results in a rapid drop in stress levels in the test specimen. The statistical analysis was carried out to establish mutual correlation among mechanical as well as physical properties.
DEVELOPMENT AND MECHANICAL CHARACTERISATION OF GLASS FIBRE REINFORCED POLYMER COMPOSITE
The present work examines the composites based on glass dominant role for a long time in a variety of applications for their high specific strength and modulus. The may be synthetic or natural. Past studies show that only synthetic carbon etc., have been used in synthetic application are very limited because of their inherent higher cost of production. main objective is to be finding out the mechanical behavior of prepared composites from S Testing Machine. The results emphasized the yield strength, ultimate strength as well as young's modulus of tension and ABSTRACT The present work examines the composites based on glass dominant role for a long time in a variety of applications for their high specific strength and modulus. The may be synthetic or natural. Past studies show that only synthetic carbon etc., have been used in synthetic fibre application are very limited because of their inherent higher cost of production. main objective is to be finding out the mechanical behavior of prepared composites from S-2 glass fibre Testing Machine. The results emphasized the yield strength, ultimate strength as well as young's modulus of tension and
IJERT-Study of Mechanical Behaviour of Polymer/Glass Fibre Reinforced Polymer Matrix Composites
International Journal of Engineering Research and Technology (IJERT), 2014
https://www.ijert.org/study-of-mechanical-behaviour-of-polymerglass-fibre-reinforced-polymer-matrix-composites https://www.ijert.org/research/study-of-mechanical-behaviour-of-polymerglass-fibre-reinforced-polymer-matrix-composites-IJERTV3IS061283.pdf The PMC's are slowly emerging form realm of advanced material & replacing conventional materials in a wide variety of applications. In this Work laminates are fabricated by a hand layup technique with and without fibres (Neat/pure matrix).The bi woven (WSM) glass fibre reinforced with polyester and epoxy resin as an adhesive. The casio4 filler material is added to resin to improve the mechanical properties. Hardener Hy-951 triethylene tetramine is added to epoxy/glass fibre & accelerator, catalyst are added to Polyester/glass fibre for activation purpose. The specimens are cut as per ASTM standards from the earlier prepared laminates. The laminated composite materials have characteristics of High modulus/weight ratio and strength/weight ratio. The samples of Epoxy/glass and Polyester/glass are tested in Electro mechanical UTM Tue-600(c).The mechanical properties of neat matrix, Epoxy/glass; Polyester/glass composites are evaluated. The measured mechanical properties of neat matrix, Epoxy/glass and polyester/glass are compared with each other. The understanding of mechanical behavior of composite materials is very essential in design and applications.
Study on the Mechanical Properties of Glass Fiber Reinforced Polyester Composites
Glass fiber reinforced unsaturated polyester (GFRP) based polymer composite was prepared using hand layup process. Four layers of GF were impregnated by polyester resin and pressed under load of 5kg for a day. Then the fabricated composite were heat treated from 60 degree Celsius to 150 degree for 1 hour and finally taken for mechanical test. Tensile strength, tensile modulus, elongation at break, impact strength, shear strength and hardness of the fabricated composite were measured. The experiment showed wonderful improvement in the mechanical properties of the fabricated composite resulted from the heat treatment. The maximum tensile strength of 200.6 MPa is found for 900C heat treated sample. Inverse relationship between heat and mechanical properties of the composite was observed above 1000C. Finally, the excellent elevated heat resistant capacity of GFRP composite shows the suitability of its application to heat exposure areas such kitchen furniture materials, marine, electric ...
STRENGTH ANALYSIS OF E-GLASS AND JUTE FIBER REINFORCED POLYESTER COMPOSITES
Nowadays, composites have been a wide area of research due to their better characteristics like strength to stiffness and weight to strength abilities. These properties lead composites to use in various application fields such as automotive, aviation, sporting and marine industries. Always composites are continuous lookout for analyzing without compromising on their physical and mechanical behavior. In this work, fibre reinforced composites were manufactured using E-glass and jute fiber with polyester as reinforcement. The composite laminates are prepared with 60:40 fibre-resin volume fraction percentages. The mechanical strength parameters such as flexural strength, tensile strength, interlaminar shear strength [ILSS] and impact strength of the composite laminate are studied as per the ASTM standards.
The study focuses on the influence of fiber architecture (sequence and orientation) on flexural strength of glass fiber reinforced composite material. Composite materials are used increasingly in various fields such as space and aviation industries, architectural structures, shipbuilding materials, sporting goods, and interior and structural materials of automobiles due to the excellence of mechanical characteristics as well as light weight, heat resistance, and control characteristics. The main purpose of this study is to obtain the effects of fiber sequence and orientation to the flexural properties of laminated polymer composite material. Glass fiber reinforced polymer laminates are produced with each laminate consists of four layers of lamina. The matrix used is thermoset polyester with woven roving and chopped strand mat E-glass fiber as reinforcement materials. Each sample is different from another in terms of stacking sequence and orientation angles. Hand lay-up process is used to produce composite laminates and a tungsten carbide jigsaw cutter is used to cut the samples to required dimensions. The experimental work is carried out in accordance to three-point flexure test of ASTM-D790. It is noted from this work that the existence of chopped strand mat had significantly improved the flexural properties of the composite laminates.
International Journal of Engineering & Technology, 2018
The composite materials are replacing the traditional materials, because of its superior properties such as high tensile strength, low thermal expansion, high strength to weight ratio. The developments of new materials are on the anvil and are growing day by day. Fiber composites such as Glass-Fiber Reinforced Polymers (GFRP) composites and Carbon-Fiber Reinforced Composites (CFRP) became more attractive due to their better properties for marine applications. In this paper, GFRP, CFRP and Hybrid composites are developed and their mechanical properties such as Hardness, tensile strength, compression strength, impact strength, toughness are evaluated. The study used to compare the effect volumetric fraction of fibers in order to improve strength and toughness, this done by using two types of fibers E-glass and carbon & two types of resins epoxy ( AralditeLY556 and Aradur HY951 ) and vinyl ester. In this experimental study, we found that high tensile strength, high specific strengt...
An experimental investigation has been carried out to develop new PMC using commercially available Epoxy and Polyurethane resin systems. These resin systems would be reinforced with glass fibers, filler materials and aluminium foils. Laminates are prepared by using the hand lay-up techniques of eight layers and mechanical test such as tensile test and compression test have been conducted. This work has been carried out to identify the appropriate resin systems, filler materials and glass fiber reinforcement to estimate the strength of the composite. Two types of glass fiber (chopped mat & woven mat) with reinforcement of filler material and aluminium foil used to estimate the strength of composite. As per the results from the present experimental study, reinforcing aluminium foil and graphite filler in the chopped mat with Epoxy resin has high tensile strength compared to woven mat reinforcement. By reinforcing filler material has high tensile and compressive strength, the properties of the laminate is increased due to the filler material reinforcement in Epoxy resin as well as in Polyurethane resin. The properties of the laminate are increased due to the filler material reinforcement in both resin systems. From this investigation we conclude that filler material plays very important role in composite system. In both epoxy and polyurethane resin system by reinforcing filler material the mechanical properties and strength of the laminate under tensile and compression are increased. By comparing two resin systems Polyurethane resin has high strength in tensile and compressive loads.
2018
In this experimental study, the glass fiber reinforced polyurethane composite is prepared and the Tensile, Flexural and Impact Strengths are analyzed.Currently the glass fiber is manufactured with other resins such as epoxy, vinylester and polypropylene. These composites are used as sports goods, automobile bodies, etc. Comparing to other resin the price of polyurethane resin is one third only. The glass fiber reinforced polyurethane composite laminates was prepared by hand layup method and it was placed on the matched plate mold for curing. The composites were manufactured at various ratios such as 30:70, 35:65, and 40:60 (Fiber: Resin). The specimen is prepared from composite laminates andthe mechanical properties such as tensile strength, flexural strength and impact strength has been analyzed as per the ASTM standard D3039, D790 and D256 respectively. The results show the best suitable fiber resin ratio with respect to strength .