Abstract

The usage of textile composites as lightweight gadgets is increasing day by day. The application range varies from personal protective tools to aerospace vehicle parts. However, every specific application demands specific functionality. Anisotropic nature of textile materials makes it possible to design composites in structural as well as non-structural shapes. In this research, single and multilayered textile composites were fabricated by using cotton woven fabric as a reinforcement and unsaturated polyester resin as a polymer. The fabrication was done at different degrees of curvature with different fabric orientations (i.e. the positioning of second and third layer fabric was turned from warp to weft) in multilayered composites to analyze their effect on the impact property of the resultant composite. Falling dart impact test was performed, to measure the impact properties of the samples. The curved specimens had shown higher strength as compared to the flat specimens. Furthermore, the increment in the degree of curvature causes the rise in fractural energy value. The number of layers has a direct effect on impact property as the number increases, the strength also increases. Finally, there was no significant effect of fabric orientation observed in double and triple layered composites.

摘要

纺织复合材料作为轻型小工具的使用日益增加。应用范围从个人防护工具到航空航天器零件不等。但是，每个特定的应用程序都需要特定的功能。纺织材料的各向异性特性使得设计结构和非结构形状的复合材料成为可能。在这项研究中，通过使用棉织物作为增强材料和不饱和聚酯树脂作为聚合物来制造单层和多层纺织复合材料。在多层复合材料中以不同的曲率度和不同的织物取向（即第二层和第三层织物的定位从经向变为纬向）进行制造，以分析它们对所得复合材料的冲击性能的影响。进行落镖冲击试验，测量样品的冲击性能。与平面试样相比，弯曲试样显示出更高的强度。此外，曲率的增加导致断裂能值的上升。随着层数的增加，层数对冲击性能有直接影响，强度也随之增加。最后，在双层和三层复合材料中没有观察到织物取向的显着影响。