复合材料结构高温力热试验时的声发射测试技术研究  

The application research of acoustic emission technique on high-temperature strength-thermal coupling experiment for composite structure

作　　者：谭志勇[1] 闵昌万[1] 占续军[1] 吴振强[2] 

机构地区：[1]北京临近空间飞行器系统工程研究所空间物理重点实验室,北京100076 [2]北京强度环境研究所可靠性与环境工程技术重点实验室,北京100076

出　　处：《强度与环境》2015年第5期59-63,共5页Structure & Environment Engineering

基　　金：国家自然科学基金(11172046)

摘　　要：介绍了复合材料结构在高温地面力热试验的环节面临的挑战。针对结构在高温条件下应变测量和损伤预测的难点,进行了高温声发射(AE)测试技术的研究,以CMC材料为例总结了载荷条件下AE信号的特点,介绍了在典型结构试验中的应用。最后提出了今后进一步发展的方向。In this paper, the challenge of ground experiment in thermal-mechanical coupling environment for composite structure is introduced. For structure in high-temperature environment, it is very difficult to measure the strain and to monitor the damage. So the application of acoustic emission （AE） technique in high-temperature environment is discussed. As an example, characters of AE signal of CMC material （C/SiC） in thermal-mechanical coupling condition is summarized. And AE technique application for typical structure is introduced. Finally, the further development direction of AE technique is inducted.

关 键 词：复合材料结构 高温力热试验 声发射测试 

分 类 号：TG115.28[金属学及工艺—物理冶金]