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Influence of stacking sequence and orientation of the fabric on mechanical properties of twill Kenaf/Kevlar reinforced unsaturated polyester hybrid composites
Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-05-29 , DOI: 10.1177/15280837211019901
HT Sreenivas 1, 2 , N Krishnamurthy 1 , MS Murali 3 , GR Arpitha 2
Affiliation  

The current study investigates on development of hybrid composite with Kenaf/Kevlar as reinforcement and unsaturated Polyester as the matrix considering stacking sequence, the orientation of fabric and twill 2x2 weave of the Kenaf fabric in particular. Five laminates (L1, L2, L3, L4, and L5) were developed by stacking the lamina's one over the other with the matrix and then cured in an autoclave. The laminates were subjected to experimental investigation to evaluate mechanical properties such as tensile strength, flexural strength, hardness, and impact strength. Results indicate that L5 shows good flexural strength and modulus, high hardness, and good impact strength, whereas L4 indicates the best tensile strength and tensile modulus. To summarize, the hybridization resulted in an average of 30% increased mechanical property for Laminate L5. The effect of stacking in L5 has a significant impact on the property of the composite. The results of the study were mainly focused on minimizing the use of synthetic fiber and replacing it with natural fiber. SEM analysis was performed on fractured surfaces of specimens which revealed that the failure of the laminated composite is due to poor interfacial bonding among fiber and matrix. Overall, the composite obtained from the combination of Kenaf and Kevlar fabrics had the best balance of properties finds appropriate application for car bumpers, fenders, boat hull, turbine blade etc.



中文翻译:

织物堆叠顺序和取向对斜纹红麻/凯夫拉增强不饱和聚酯杂化复合材料力学性能的影响

目前的研究调查了以红麻/凯夫拉纤维为增强材料,以不饱和聚酯为基体的混合复合材料的开发,考虑到堆叠顺序,特别是红麻织物的织物方向和斜纹 2x2 编织。五个层压板(L1、L2、L3、L4 和 L5)是通过将层压板的一个层压在另一个与基体上,然后在高压釜中固化而开发的。对层压板进行实验研究以评估机械性能,例如拉伸强度、弯曲强度、硬度和冲击强度。结果表明,L5 显示出良好的弯曲强度和模量、高硬度和良好的冲击强度,而 L4 表示最好的拉伸强度和拉伸模量。总之,杂交导致层压板 L5 的机械性能平均提高 30%。L5中的堆叠效应对复合材料的性能有显着影响。研究结果主要集中在尽量减少合成纤维的使用并用天然纤维代替。对试样断面进行SEM分析,结果表明层压复合材料的失效是由于纤维和基体之间的界面结合不良。总体而言,由红麻和 Kevlar 织物组合获得的复合材料具有最佳的性能平衡,适用于汽车保险杠、挡泥板、船体、涡轮叶片等。对试样断面进行SEM分析,结果表明层压复合材料的失效是由于纤维和基体之间的界面结合不良。总体而言,由红麻和 Kevlar 织物组合获得的复合材料具有最佳的性能平衡,适用于汽车保险杠、挡泥板、船体、涡轮叶片等。对试样断面进行SEM分析,结果表明层压复合材料的失效是由于纤维和基体之间的界面结合不良。总体而言,由红麻和 Kevlar 织物组合获得的复合材料具有最佳的性能平衡,适用于汽车保险杠、挡泥板、船体、涡轮叶片等。

更新日期:2021-05-30
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