アラミド繊維／ポリアミド 66 樹脂複合材料の破壊特性に及ぼす試験片寸法と負荷速度の影響

抄録

This study examines on the fracture properties of short aramid fiber (AF) reinforced polyamide66 (PA66) composites. M-aramid fiber (Conex) and P-aramid fiber (Technora) were used. Three-point bending fracture tests and tensile fracture tests were conducted to evaluate the fracture properties of AF/PA66 composites. As the fiber length of AF increased, the strain energy at the maximum load increased. Conex/PA66 composites showed brittle fracture behavior. On the other hand, Technora/PA66 composites showed ductile fracture behavior. As the specimen size decreased, the loading rate dependence increased, and the specific strain energy at the maximum load of Technora/PA66 composites tended to decrease.