G0300405 Tensile Property of Plain Woven Jute Fiber Reinforced PLA after Thermal Fatigue

Abstract

In this study, effect of thermal fatigue on tensile property of plain woven jute fiber reinforced PLA was investigated. As a condition of thermal fatigue test, a range of temperature was from 35°C to 55°C. The maximum number of cycle was 200 cycles. The quasi-static tensile test was conducted after thermal fatigue test. Fracture surface of composite was observed by scanning electron microscope. As a result, tensile strength and Young's modulus of composite at 200 cycles decreased 22% and 14% compared with those of virgin material, respectively. Tensile strength and Young's modulus of PLA resin almost did not change until 200 cycles. From fracture surface observation of composite, the length of fiber pull out in fracture surface of composite at 200 cycles was larger than that of virgin material. Therefore, the tensile property of composite after thermal fatigue was probably decreased due to the decrease of interfacial adhesion between fiber and resin.