Analysis of acoustic emission characteristics of tensile damage of aircraft composite
-
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。Abstract: 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.
-
Keywords:
- composite /
- acoustic emission /
- parametric analysis /
- damage evolution
-
-
[1] 严实,孙雨果,吴林志,等.板状三维四向编织复合材料压缩细观破坏机理的实验研究[J].复合材料学报,2007,24(4):133-139. [2] 方鹏,成来飞,张立同,等.C/SiC复合材料拉伸过程的声发射研究[J].无损检测,2006,28(7):358-361. [3] 杨盛良,刘军,杨德明,等.复合材料损伤过程的声发射研究方法[J].无损检测,2000,22(7):303-306. [4] 刘增华,董拓灿,彭秋玲,等.碳纤维复合材料板的声发射源定位[J].无损检测,2016,38(10):48-52.欢迎网上投稿欢迎订阅欢迎刊登广告
计量
- 文章访问数: 3
- HTML全文浏览量: 0
- PDF下载量: 2
下载:
