飞机复合材料拉伸过程损伤的声发射特性分析  

Analysis of acoustic emission characteristics of tensile damage of aircraft composite

作　　者：黄华斌[1] 彭智伟[1] 王竹林[1] HUANG Huabin;PENG Zhiwei;WANG Zhulin(Aircraft Strength Research Institute of China,Xi'an 710065,China)

机构地区：[1]中国飞机强度研究所,西安710065

出　　处：《无损检测》2022年第5期38-42,共5页Nondestructive Testing

摘　　要：利用声发射技术开展对拉伸载荷下飞机复合材料T型结构件的损伤发生过程研究,对复合材料试件拉伸载荷下损伤产生过程的机理进行了初步探讨。采用参数分析方法对拉伸试验采集到的声发射信号进行分析,得到该T型结构件拉伸过程中基体开裂、分层、纤维断裂至完全丧失承载能力时的声发射信号特征及其对应的载荷。结果表明,声发射技术能够准确预测复合材料T型结构件拉伸载荷下的损伤发生过程,可为该类结构件的检测提供参考。The damage process of aircraft composite T-shaped structure under tensile load is studied by acoustic emission technology, and the damage mechanism of composite specimens under tensile load is discussed. The acoustic emission signals collected from the tensile test are analyzed by parameter analysis method, and acoustic emission signal characteristics and corresponding loads of matrix cracking, delamination, fiber fracture to complete loss of bearing capacity in the tensile process of the T-shaped structure are obtained. The results show that acoustic emission technology can accurately predict the damage process of composite T-shaped structural parts under tensile load, and can provide reference for the detection of this kind of structural parts.

关 键 词：复合材料 声发射 参数分析 损伤变化 

分 类 号：TG115.28[金属学及工艺—物理冶金]