Reducing weight and stabilizing or upgrading the strength is more important. Automotive and related industries are making a progress to replace the conventional steel leaf spring to composites material made from glass fibre, natural fibres, and so on. In this study, woven E-glass fibre, woven sisal and hybridization of woven glass and sisal fibre have been selected as materials. The resin used in this study is epoxy (B-11(3101)) VHV and the hardener is (K-6(5205)). The mono leaf spring is fabricated using hand lay-up process, which tends to be simple and cost effective. The existing dimensions of a conventional Tata Ace leaf spring are selected for modelling and analysis. Stress and deflection is tested experimentally by flexural testing. The hardness of the composites is determined with the help of Rockwell and Brinell hardness testing machine and the values are correlated with each other. Leaf spring is modeled in CREO Parametric 2.0 and introduced in ANSYS 14.5 for the numerical analysis. The results suggest that the composites have reduced weight up to 75% in comparison with the conventional one. With reduced component weight and better performance achieved by composite material, the replacement of conventional material with that of the composite is efficient. The efficiency of a vehicle will improve with a reduced component cost when composite leaf spring is used.

减轻重量，稳定或提高强度更为重要。汽车及相关行业正在朝着由玻璃纤维，天然纤维等制成的复合材料代替传统的钢板弹簧的进步。在这项研究中，已选择编织的E-玻璃纤维，编织的剑麻以及编织的玻璃和剑麻纤维的混合物作为材料。本研究中使用的树脂是环氧树脂（B-11（3101））VHV，硬化剂是（K-6（5205））。单簧片弹簧是通过手工叠层工艺制造的，这种工艺趋于简单且具有成本效益。选择常规Tata Ace板簧的现有尺寸进行建模和分析。应力和挠度通过弯曲测试进行了实验测试。在Rockwell和Brinell硬度测试仪的帮助下确定复合材料的硬度，并将这些值相互关联。板簧在CREO Parametric 2.0中建模，并在ANSYS 14.5中引入以进行数值分析。结果表明，与传统复合材料相比，该复合材料的重量降低了75％。利用复合材料可以减少部件的重量并获得更好的性能，因此用复合材料替代常规材料是有效的。当使用复合板簧时，车辆的效率将提高，部件成本降低。结果表明，与传统复合材料相比，该复合材料的重量降低了75％。利用复合材料可以减少部件的重量并获得更好的性能，因此用复合材料替代常规材料是有效的。当使用复合板簧时，车辆的效率将提高，部件成本降低。结果表明，与传统复合材料相比，该复合材料的重量降低了75％。利用复合材料可以减少部件的重量并获得更好的性能，因此用复合材料替代常规材料是有效的。当使用复合板簧时，车辆的效率将提高，部件成本降低。