ABSTRACT

Owing to the increasing demand for high performance and lightweight materials, fiber metal laminates (FMLs) have become the alternative materials to replace metallic alloys. When the environmental friendliness of the materials is taken into consideration, plant fibers have shown an excellent potential to be employed as the reinforcements in FMLs. This work describes the mechanical behavior of kenaf and pineapple leaf fibers (PALF) reinforced metal laminates with various fiber contents, ranging from 10 wt% to 50 wt%. Fiber metal laminates were formed through the coalescence of metallic skin layers with the composite as the core. The mechanical tests were then conducted to study the tensile, flexural and Charpy impact properties of the structures. From the findings, it was concluded that both the kenaf and PALF based FMLs showed the optimum mechanical properties when the fiber content was fixed at 30 wt%. In addition, PALF based FMLs had shown higher mechanical properties over kenaf based FMLs. At a fiber content of 30 wt%, the tensile and flexural strength of PALF based FMLs were respectively 6.18% and 3.44% higher than kenaf based FMLs. In terms of impact properties, the impact strength of PALF based FMLs was 5.06% and 40.73% higher than kenaf based FMLs in the flatwise and edgewise orientations.

摘要

由于对高性能和轻质材料的需求不断增加，纤维金属层压板（FML）已成为替代金属合金的替代材料。当考虑到材料的环境友好性时，植物纤维已显示出在 FML 中用作增强材料的极好潜力。这项工作描述了红麻和菠萝叶纤维 (PALF) 增强金属层压板的机械性能，其纤维含量从 10 wt% 到 50 wt% 不等。纤维金属层压板是通过以复合材料为核心的金属表层的聚结形成的。然后进行机械测试以研究结构的拉伸、弯曲和夏比冲击性能。从调查结果来看，得出的结论是，当纤维含量固定在 30 wt% 时，基于红麻和 PALF 的 FML 均显示出最佳的机械性能。此外，基于 PALF 的 FML 表现出比基于红麻的 FML 更高的机械性能。在 30 wt% 的纤维含量下，基于 PALF 的 FML 的拉伸和弯曲强度分别比基于红麻的 FML 高 6.18% 和 3.44%。在冲击性能方面，PALF 基 FML 的冲击强度比基于红麻的 FML 在平面和边缘方向上分别高 5.06% 和 40.73%。