Experimental Investigation On Impact Resistance Behavior Of Woven Sisal Fiber Reinforced Polyester Composite

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Natural fiber reinforced polymer composites (NFRPC) has been used in many applications.rnThese natural fiber reinforced polymer are capable of absorbing impact energy and dissipating itrnby different failure modes when they are subjected to low velocity impacts. The impact load onrnNFRPC materials can create internal damage, which significantly reduces their structuralrnstrength, and this phenomenon remains a major concern for structural components. Wovenrnnatural fiber reinforced plastic composites have better tensile, flexural, compressive strengthrnbecause of the interlacing of fiber bundles than the mechanical properties of unidirectional andrnshort randomly oriented NFRPC. However, the characterization of impact behavior withrndifferent fiber orientation such as 30rn woven sisal fiberrnreinforced polyester composite was not studied vigorously. Thus, this paper concerns aboutrndevelopment and characterization of the impact resistance behavior of woven sisal fiberrnreinforced polyester composite materials experimentally for semi-structural part (such asrnautomotive interior body panels, automotive back seats and automotive interior door panels) byrnusing Izod impact testing setup. Sisal fibers purchased from local market was extracted usingrnmanual decortication and water retting process. The 30rn0rn0rn0rn0rn0rn/-60rn, 0/90rn0rn, 30rn0rn/-45rn and 45rn/-45rnwovenrnsisal fiber was prepared using nailed wooden frame as a wrap and weft guider. On this guide, thernfiber orientation both for wrap and weft was marked and nailed according to the orientations.rnThen the interlacing of wrap and weft threads was made. The woven sisal fiber was impregnatedrnin order to make woven sisal fiber dimensionally stable. After that using 10:1 polyester/ MEKPrnmixing ratio and 40% by weight of fiber, the composite was developed using hand layup process.rnA weight fraction of 40% by weight fiber was used because previous studies has showed that it isrnbest fiber-matrix combination. After the laminate was cured, the specimens were cut accordingrnto ASTM standard in Natty Metals manufacturing enterprise. The morphology and crosssectionalrnelementalrndetectionrnwasrncarriedrnoutrnusingrnSEMrnassessmentrninrnLDI.rnFinally,rnimpactrntestsrnrnwererncarriedrnoutrnusingrnIzodrnimpactrntestingrnsetrnuprninrnASTU.rnThernaveragernimpactrnstrengthrnofrnarn40rnrnwt.rn%rnfiberrn45rn0rn0rn0rn0rn0rn0rn/60rn, 30rn0rn/-45rn0 rn, 0rn/90rn and 45rn/-45rn0rn0rn WSFRUPC test specimen with consecutive wrap and weft tow spacing 2mmrnwas 342.67 J/m and was greater energy compared to the other orientations. But the averagernimpact strength of a 40wt. % fiber 30rn/-45rn WSFRUPC of test specimen with consecutive wraprnand weft tow spacing 2mm was 241.33J/m and was less energy compared to the otherrnorientations. The SEM micrograph analysis result showed a good fiber matrix adhesion.rnHowever, porosity and crack were shown in the wet area.

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Experimental Investigation On Impact Resistance Behavior Of Woven Sisal Fiber Reinforced Polyester Composite

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