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- W816089 abstract "The objective of this study is to examine the behaviour of composites and to provide anoverview of short glass fiber reinforced injection-moulded theimoplastic, SgFRIMT inrelation to the fiber orientation direction. In this study, the relationship between themechanical propesties of samples containing longitudinal and transverse direction wasstudied in terms of the effects of injection speed, fiber concentration and fiber length onthe mechanical properties of SgFRIMT. The orientation of fiber distribution inlongitudinal and transverse direction was measured according to the gate position andsamples- taken from identified position were investigated and tested at an angle relative tothe fiber direction.The composite consisting of 5, 10, 15% wt of glass fiber was prepared using single screwextsuder model Brabender Plasticoder PL 2000, a compression molding machine and an80-tonne Toshiba injection molding machine. The tensile properties were evaluated by Instron testing machine model 4301. The discussion focuses on the effects of fiberconcentration, injecting speed and fiber length on tensile properties of a SgFRIMT.Tensile strength shows a steady decrease with increasing percentage of fiber loadings. Incontrast, the tensile modulus increases significantly with an increase in the fiber loadings.At higher fiber concentration, the values of the modulus were higher than those of theunfilled polypropylene. The fiber breakage that occurs during sample preparation reducesthe overall tensile strength significantly.Additional investigation was carried out on the effect of fiber breakage using 6 and 12mm fiber length, where it was obsesved that the fiber breakage occurs duringcompounding stages with approximately 80% reduction in initial fiber length.Observation on the extrudates reveals that poor fiber matrix interaction causes the failureof the prepared samples. The presence of void and the agglomeration inside the samplesconsiderably affects the mechanical properties of the composites. The results indicate thatthe stiffness and toughness of the SgFRIMT generally are influenced by the addition ofglass fibers. In this study the influence of the injection speed was insignificant.The results of average fiber length agree with the results of other previous studies onSgFRIMT materials, indicating that the fiber length has major influence on the tensileproperties of the prepased samples." @default.
- W816089 created "2016-06-24" @default.
- W816089 creator A5038866629 @default.
- W816089 date "2004-05-01" @default.
- W816089 modified "2023-09-27" @default.
- W816089 title "Effect of Fiber Orientation on Tensile Properties of Short Glass Fiber Reinforced Injection Molding Polypropylene Composite" @default.
- W816089 hasPublicationYear "2004" @default.
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