https://orcid.org/0000-0002-8579-5142
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ABSTRACT
Today, there is a new trend to substitute sustainable raw materials instead of unsustainable ones in many production-based industries. Natural fiber-reinforced composites have a low resistance to applied loads and chemical effects compared to synthetic fiber-reinforced composites. For this reason, researchers have aimed to increase the strength of natural fiber-reinforced composites with a variety of applications. In this study, the fracture toughness of jute/epoxy laminated composites, which were filled with silicon carbide (SiC) particles, were investigated. In this context, natural jute/epoxy laminated composites were filled in different ratios (3%, 6%, and 9%) with SiC particles having different granule sizes (4.5 μm, 9.3 μm, and 53 μm). Fracture toughness of filled and unfilled natural jute/epoxy composites in the loading state of Mod I, Mod I/II and Mode II were investigated by using the Arcan test apparatus. Also, the fracture behavior of filled and unfilled jute/epoxy laminated composites was analyzed by using the Finite Element Method (FEM). It was found that the analysis results were compatible with experimental results. The test results showed that the fracture toughness of SiC filled jute/epoxy laminated composites was higher than that of pure jute/epoxy composites. Also, the fracture toughness of the natural composite material varies according to the filling percentage and granule size.
抽象今天，在许多以生产为基础的工业中，用可持续的原材料代替不可持续的原材料是一种新的趋势. 与合成纤维增强复合材料相比，天然纤维增强复合材料对外加荷载和化学效应的抵抗力较低. 因此，研究人员致力于通过各种应用来提高天然纤维增强复合材料的强度. 研究了碳化硅颗粒填充黄麻/环氧树脂层合复合材料SiC的断裂韧性. 在这种情况下，用不同粒径（4.5μm、9.3μm和53μm）的SiC颗粒以不同的比例（3%、6%和9%）填充天然黄麻/环氧层压复合材料. 利用Arcan试验机研究了填充和未填充天然黄麻/环氧复合材料在Mod I、Mod I/II和Mod II加载状态下的断裂韧性. 同时，利用有限元法（FEM）对填充和未填充黄麻/环氧树脂层合复合材料的断裂行为进行了分析. 结果表明，分析结果与实验结果一致. 结果表明，SiC填充黄麻/环氧树脂复合材料的断裂韧性高于纯黄麻/环氧复合材料. 天然复合材料的断裂韧性随填充率和颗粒尺寸的不同而变化.