다양한 온도에서의 적층 복합재료의 장시간 거동 평가

Abstract

To predict the lifespan of the laminated composites with model based on the Accelerate Test Methodology (ATM) and Time-Temperature Superposition Principle (TTSP), the Constant Strain Rate (CSR) test should be performed firstly to get the young’s modulus (E) and average value of the strength which is the basic for creep and fatigue test. In this thesis, we performed CSR test with Non-Crimp-Fabrics (NCF) composite materials at different temperatures (here we select 25oC, 50oC, 80oC, 110oC) in order to get the young’s modulus (E) and average value of the strength at each temperatures. Here NCF composites in this thesis consist of four different types: unidirectional longitudinal composites, unidirectional transverse composites, biaxial composites and triaxial composites. Mean while we did the pure resin test using with respected temperatures, with the resin test data and the NCF composite test data, the long time property of the composites can be determined by the further Creep and Fatigue test which can use ATM to accelerate the testing process.