Fiber Orientation and its Influence on the Flexural Strength of Glass Fiber and Graphite Fiber reinforced Polymer Composite

This paper investigates the effect of fibre orientation on the flexural strength of fibre reinforced -epoxy laminated composite material, with the variation in the orientation of the reinforced fibres there will be a substantial variation in the flexural strength of the laminated composites. In the present paper fabrication of glass fibre reinforced laminated composites and graphite fibre reinforced laminated composites with varying orientation of reinforced fibres were prepared using the hand layup, vacuum baggage technique and these specimens are subjected to 3 point static bending testing the investigations are carried out as per the ASTM standards. Using the load -deflection graph the maximum load, maximum deflection and the flexural strength of the specimen for different laminated composites is evaluated and the appropriate conclusions are drawn

Experimental Evaluation of Strength and Stiffness of Fibre Reinforced Composites under Flexural loading

Many structures used in Automobile, Aerospace, Naval and other Transportation vehicle structural parts are subjected to various kinds of loads. These structures are further subjected to bending loads causing flexural stress in the structures. The structures subjected to bending loads are prone to catastrophic failure. Therefore the structural integrity of structures is a must to overcome bending. Structures subjected to pure bending load often experiences maximum flexural stress of the specimen either at the outer or the inner fibre leading to failure, the stress will be zero at the neutral axis or the middle axis. The present study aims at investigating the flexural parameters of epoxy glass & graphite fiber reinforced composites when subjected to static flexural loading using Flexural Test system. The flexural parameters are determined by conducting the three point bend test on composite specimen as per ASTMD790 standards. The composite laminate specimens are prepared using the vacuum baggage technique and the specimens are subjected to three point bending test. The load versus deflection graphs were plotted and Flexural properties like flexural strength and stiffness for glass laminated and graphite laminated composites are evaluated and the appropriate conclusions are drawn

Development and Characterization of Wear Properties of Aluminum 8011 Hybrid Metal Matrix Composites

The objective of present investigation is to study the effect of reinforcements on the wear properties of E-Glass short fibers and Flyash reinforced Al 8011 hybrid metal matrix composites. The alloy of Al 8011 reinforced with E-glass and fly ash particulates are prepared by simple stir casting method. The MMC is obtained for different composition of E-glass and flyash particulates (varying E-glass with constant fly ash and varying flyash with constant E-glass percentage). The wear results of ascast hybrid composites with different compositions of reinforcements at varying sliding speeds and different loads are discussed. The results reveals that as the percentage of reinforcement increases wear rate will decrease

Mechanical Characterization of PU based sandwich Composites with variation in core density

Sandwich composite finds its application in varied fields of engineering, mainly due to the fact that they are light weight, have a better strength to weight ratio and to an extent corrosion resistant. Each application might involve different fabrication technique and selection of appropriate foam core and facings. In this study, three different core densities of PU foam combined with glass fiber facings are fabricated using vacuum bagging technique. Because of their comp lex nature of fabrication by adding epoxy resin between facings and core makes the evaluation of their mechanical characteristics quite difficult to predict. Since core material being the weakest part of the sandwich composite, studies are carried out to determine the effect of change in mechanical properties by increasing the core thickness and density. Further, the mechanical response of these sandwich composites are studied by carrying out flatwise, edgewise compressive test and flexural strength on a Mecmesin MultiTest 10 –i testing equipment as per ASTM standards. It is found that with increase in core density the flatwise compressive modulus increases and facesheet wrinkling in low density foam and core debonding in higher density foam was noticed in edgewise compression. The flexural tests showed that with increase in core thickness marginally increased the face being stress as compared with increase in core density

Study of Mechanical Properties of Glass Fiber and Flyash Particulate Reinforced Al 2219 Hybrid Composites

Composite material is a material composed of two or more distinct phases (matrix phase and reinforcing phase) and having bulk properties significantly different from those of any of the constituents. Many of common materials (metals, alloys, doped ceramics and polymers mixed with additives) also have a small amount of dispersed phases in their structures, however they are not considered as composite materials since their properties are similar to those of their base constituents (physical property of steel are similar to those of pure iron). Favorable properties of composites materials are high stiffness and high strength, low density, high temperature stability, high electrical and thermal conductivity, adjustable coefficient of thermal expansion, corrosion resistance, improved wear resistance et

Evaluation of Wear Properties of Flyash and C-Glass Reinforced Al4046 Hybrid MMC

Metal Matrix Composites (MMCs) are engineered materials designed by a combination of a particulate or fibre reinforced in a metal or alloy matrix. This research work is concerned about the production of Fly ash, C-glass reinforced hybrid Aluminium 4046 metal matrix composites and further to investigate on the wear properties of the processed composites. Aluminium4046-Flyash-C-glass metal matrix composites have been processed for this study. In this work, the experimental study began with mixing of Aluminium powder, Fly ash particulates and C-glass fibers using a Stir casting technique at different weight fraction addition of Fly ash(2%,4%,6%) and Cglass(1%,3%,5%,7%).After production, the machining of the hybrid metal matrix composites is carried out as per ASTM standards. The wear rate is calculated using Pin on disc test machine. This experiment result show that best wear resistant combination is at 6% of Fly ash and 7% of C-glass is used

Compartive Study OF Experimental and Simulated Results of Compression Test on Epoxy Based E-Glass/Carbon Fiber Reinforced Polymer Composite Laminates

In this study, compressive strength and contraction of Polymer Composite Laminates made of E-Glass / Carbon bi-woven fabric reinforced in Epoxy resin matrix has been evaluated experimentally. Composite laminates were fabricated using hand lay-up technique for different ply orientations of 00,300,450,600and stacking sequence of (00/300/450/600) 2S for 2 and 3 mm laminate thickness. The laminates were subjected to vacuum bag moulding (Wet Layup), followed by post curing process at elevated temperatures. The specimen preparation and compression testing were carried out as per ASTM standards using Instron Universal Testing Machine. The Experimental results were validated with FEM analysis by LS-DYNA using LS-PREPOST as the prime post processor and the results of both experimental andFEM show admirable agreement with one another

Investigation of Low velocity Impact Properties of Kevlar Fiber Reinforced Polymer Matrix Composites

The work presented in this project investigates the experimental study of low velocity impact properties of Kevlar fiber reinforced polymer matrix composite materials with respect to different thickness. Behaviour of Kevlar fibre-reinforced composite materials is studied. The test specimens are fabricated by simple hand lay-up technique and prepared according to ASTM standards. Visual examination of the impacted samples reveals that the damage in the fibres was developed around the point of impact, which results in considerable strength loss

Studies On Tensile Properties Of Natural Fiber Polymer Matrix Composites

Environmental awareness today motivates the researchers, worldwide on the studies of natural fiber reinforced polymer composite and cost effective option to synthetic fiber reinforced composites. In the present work different natural fiber based polymer matrix composites are prepared by using natural fibers Coir, Saw Dust, Rice husk and their tensile properties are studied. Usual hand- lay-up technique has been adopted for manufacturing the composite. To have a good compatibility between the fiber and matrix, chemical modification of fibers has been carried out. The study confirms that the tensile strength of the composites are varies with the volume fraction of the fibers

Investigations on the Flexural Strength and the Effect of b/h and l/b ratio on the Carbon Fiber Reinforced Epoxy Laminated Composites

In present day the use of fiber reinforced composites is increased remarkably in the various sectors of industries owing to its relative advantages especially in industries like aeronotics, automobile, ship buildingand in chemical industries, where the major emphasis is on weight reduction with a subtantial increase in the mechanical strengt h of the component with enhanced durabli ty by having properties like corrosive resistance, anti reactive to various acidic reactions and to with stand various climatic and temperature conditions.In this context carbon fibre reinforced laminated composites exhibit excellent mechanical properties.Investigation of various properties is difficult in composite materials because of its complex behavior further it is very difficult to evaluate the behavior of fiber laminated composites because of its enhanced complexity,evaluation of properties in composites is difficult with the addition of the fiber (carbon fiber)into the matrix. in this paper an investigation on the flexural properties of the carbon fiber reinforced laminates is carried out and the effect of bredth(b)to thickness(t)and the influence of the of length(l)to breadth(b),Aspect ratiois being evaluated and appropriate conclusions are drawn