玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (12): 23-27.

• 基础研究 • 上一篇    下一篇

玻璃纤维复合材料损伤过程的声发射特性研究

孟超1,彭卫东1*,宁小波2,唐庆如1   

  1. 1.中国民用航空飞行学院航空工程学院,广汉618307;
    2.四川飞机维修工程有限公司,成都610200
  • 收稿日期:2016-06-28 出版日期:2016-12-31 发布日期:2016-12-31
  • 通讯作者: 彭卫东(1968-),男,硕士,教授,主要从事计算机测控以及电气技术方面的研究,pwdcafuc@126.com。
  • 作者简介:孟超(1989-),男,硕士,主要从事复合材料无损检测方面的研究。
  • 基金资助:
    国家自然科学基金民航联合研究基金重点支持项目(U1233202)

INVESTIGATION ON THE ACOUSTIC EMISSION CHARACTERISTICS DURING THE DAMAGE OF GLASS FIBER COMPOSITE

MENG Chao1, PENG Wei-dong1, NING Xiao-bo2, TANG Qing-ru1   

  1. 1.Aeronautical Engineering Institute, Civil Aviation Flight University of China, Guanghan 618307, China;.2.Sichuan Aircraft Maintenance Engineering Ltd.., Co.., Chengdu 610200, China
  • Received:2016-06-28 Online:2016-12-31 Published:2016-12-31

摘要: 复合材料以其优越的结构性能被广泛应用于航天航空、汽车制造等领域,针对玻璃纤维复合材料损伤特性及其声发射信号特点,设计完成了一套基于TMS320F28335的集数据采集、存储和显示为一体的声发射检测系统。采用现代小波变换的时频分析方法,分析了玻璃纤维复合材料损伤声发射信号的波形和频率特性,确定了玻璃纤维复合材料声发射信号频率的三个主要频段及其对应的三种基本损伤模式。

关键词: 声发射, 复合材料, 检测, 小波分析

Abstract: Glass fiber composite materials are widely used in aerospace, automobile manufacturing and other fields because of its superior performance in structure. A set of acoustic emission detection system consist of TMS320F28335, storage and display were designed based on the damage properties of glass fiber composite materials and the characteristics of AE signals. The waveform and frequency characteristics of acoustic emission signal are analyzed by the time frequency analysis method of modern wavelet transform, and three main frequency bands and corresponding three basic damage modes of the glass fiber composite acoustic emission signal frequency are determined.

Key words: acoustic emission, glass fiber composites, detection, wavelet analysis

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