基于声发射检测技术的FRP复合材料损伤试验研究

摘要

用声发射技术研究了FRP复合材料的拉伸损伤与断裂行为,宽带传感器记录了不同纤维铺向的复合材料在拉伸破坏过程中的声发射信号.运用三维参数法,分析了FRP复合材料拉伸损伤的声发射特性,并对复合材料声发射信号的幅度进行统计分析,宏观上揭示了不同角度FRP复合材料拉伸损伤的发展、演化过程和规律.%Abstract Basing on acoustic emission and making use of broadband sensors to record acoustic signals of composite materials which boasting of different fiber angles and damaged in tensile operation, the tensile damage and fracture behavior of FRP composite materials were investigated, and acoustic characteristics of damaged FRP composite materials were analyzed with 3D parameter method. Statistical analysis of the acoustic emission signal amplitude reveals the development process of FRP composite materials with tensile damage in different angle.