车载气瓶用复合材料三点弯曲声发射特性研究

Research of Acoustic Emission Character of Composite Material Cylinder Three-point Bending

以WDW-100万能试验机和SAMOS声发射检测仪器搭建试验平台,对车载气瓶用玻璃纤维复合材料试件进行三点弯曲声发射特性研究。对采集到的声发射信号进行参数分析,并研究其损伤机理,得到玻璃纤维试件损伤产生、发展直至最终破坏整个过程所呈现出来的声发射特征,辨别出试件失效过程中不同的损伤模式和损伤阶段,为评价玻璃纤维复合材料的质量和安全性提供一定的依据。

The three-point bending experiment with glass fiber cylinder specimen using acoustic emission detection technology was achieved with the experimental platform consisting of WDW-100 universal testing machine and SAMOS acoustic emission detecting instrument. Parameter analysis and research on damage mechanism were accomplished with the collected AE（acoustic emission） signals. Acoustic emission characteristics of glass fiber specimen damage were obtained. Based on the proposed method, the different damage patterns and stages during the process of glass fiber specimen deformation were successfully recognized, and provide the basis for evaluating the quality and safety of glass fiber composite material.