声发射技术在纤维增强复合材料损伤检测和破坏过程分析中的应用研究进展

摘要

Acoustic emission (AE),a non-destructive testing technique,has advantages such as activeness,insensitivity to geometry of samples,immediacy and characteristic,etc.By establishing the links between composite material's failure features and the AE signals,determining each failure mode of the composites in loading process,and also involving the stress-strain curves,this technique can obtain the failure mechanisms of the composites.The present paper reviews the application and analysis methodology of the AE technique in fiber reinforced polymer composites,and sketches out the future trends and prospect.%声发射作为一种无损检测技术,具有主动性、几何形状不敏感性、即时性和特征性等优点.声发射技术通过建立复合材料损伤和破坏特征与声发射信号间的关联,分辨复合材料随加载过程的各种失效模式,结合加载过程中的应力应变曲线,从而获得失效机制.本文对声发射检测技术在纤维增强复合材料研究中的应用和分析方法进行了综述,并对其在复合材料领域的应用趋势进行了展望.