Development and analysis of new intraply for glass fiber and kenaf fiber in composite structure applications

Loh, Yen Ching (2015) Development and analysis of new intraply for glass fiber and kenaf fiber in composite structure applications. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This research focuses on the effect of a single ply or lamina intraply hybrid composite in four different weave structure designs under areal density, longitudinal and transverse tensile test. The eight lamina intraply composite is fabricated by using vacuum infusion and the glass fiber and kenaf fiber as reinforcements and epoxy resin as matrix according to specific different weave structure designs which are plain weave, 2x2 twill weave, 5-hardness satin weave and 2x2 basket weave. The kenaf fibers were weaved in the warp direction and the glass fibers in weft direction. The findings for longitudinal tensile test shows the 2x2 twill weave design required highest average value of maximum force to break followed by 2x2 basket weave, plain weave and 5-hardness satin weave which is lowest 27.12 % compare to 2x2 twill weave. Meanwhile, the findings for transverse tensile test shows the 2x2 basket weave sample required highers average value of maximum force followed by 2x2 twill, plain and 5-hardness satin. The highest average value of maximum force is 3.12 kN to break the 2x2 basket weave sample which 37.82 % higher than 5- hardness satin. A different weave design structure and percentage of reinforcement content required a different breaking force where the twill weave in longitudinal tensile test needed highest force due to the complex structure of design. Besides, the 2x2 basket weave is slightly higher about 0.64 % of the maximum force compare to twill weave because the number of yarns of glass fiber in 2x2 basket weave is more than twill weave. The 5-hardness satin weave shows the lowest breaking force in longitudinal and transverse tensile test due to the intersections of warp and weft yarns are relatively lower and loosen. The experimental result confirmed that the compactness of the weave structure and the number of yarns in composite produce high effect on the properties of lamina intraply composite, the less loosen structure, the highest the breaking force required.

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