无机材料学报

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声发射技术在三维编织C/SiC复合材料拉伸损伤分析中的应用

潘文革; 矫桂琼; 王波; 管国阳   

  1. 西北工业大学工程力学系 西安 710072
  • 收稿日期:2003-06-23 修回日期:2003-07-28 出版日期:2004-07-20 网络出版日期:2004-07-20

Characterizing Damage Evolution of Three-dimensional Braided C/SiC Composite with AE Technology

PAN Wen-Ge; JIAO Gui-Qiong; WANG Bo; GUAN Guo-Yang   

  1. Department of Engineering Mechanics; Northwestern Polytechnical University; Xi an 710072; China
  • Received:2003-06-23 Revised:2003-07-28 Published:2004-07-20 Online:2004-07-20

摘要: 通过声发射技术(Acoustic Emission简称AE)对三维编织C/SiC复合材料试件单向拉伸实验过程进行全程动态监测,利用声发射特征参数的综合分析法揭示了三维编织C/SiC复合材料单向拉伸时损伤演化过程和规律。实验结果表明三维编织C/SiC复合材料单向拉伸时损伤发展的四个阶段及声发射特性并利用声发射相对能量定义了材料临界损伤强度。

关键词: 陶瓷基复合材料, 三维编织, 声发射, 损伤演化

Abstract: An approach toanalyze the tensile behavior and damage evolution of three-dimensional braided C/SiC composite.Monotonic tensile tests were performed. Acoustic emission (AE) was used to monitor damage extension during test.Damage evolution was analyzed and different damage phases were determined by AE characteristic parameters data. Critical damage stress described with AE cumulates energy waw also defined.

Key words: C/SiC composite, 3-D braid, acoustic emission(AE), damage evolution

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