| 结构裂纹故障振动检测的小波分析 |
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| 引用本文： | 张维峰, 冯华. 结构裂纹故障振动检测的小波分析[J]. 力学与实践, 2010, 32(1): 20-23. doi: 10.6052/1000-0879-2008-448 |
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| 作者姓名： | 张维峰 冯华 |
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| 作者单位： | 长安大学汽车学院 |
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| 摘 要： | 针对结构微小缺陷振动无损检测中难以提取含故障信息信号的难点，以含有预制裂纹的微型汽车驱动桥试件为研究对象，探索了一种采用小波分析和现代谱估计技术，提取结构受瞬态激励作用下，反映裂纹信息的微小弹性波的实验室裂纹识别方法. 试验结果表明，该方法能够较为有效地提高结构微小缺陷振动检测的信号精度.
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| 关 键 词： | 小波分析 裂纹 振动检测 |
| 收稿时间： | 2008-09-25 |
| 修稿时间： | 1900-01-01 |
THE WAVELET ANALYSIS OF VIBRATION DETECTION FOR STRUCTURE'S CRACK FAULT |
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| THE WAVELET ANALYSIS OF VIBRATION DETECTION FOR STRUCTURE'S CRACK FAULT[J]. Mechanics in Engineering, 2010, 32(1): 20-23. doi: 10.6052/1000-0879-2008-448 |
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| Authors: | ZHANG Weifeng FENG Hua |
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| Affiliation: | 1;Department of Automotive/a>;Chang'an University/a>;Xi'an 710064/a>;China |
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| Abstract: | It is difficult to isolate the signal with messages of structure's mini-faults in vibration detection methods.This paper proposes a method of wavelet analysis and modern spectrum estimation technology to extract the weakness elastic wave signal that represents structure's cracks characteristics.For a specimen with crack,the experimental results show that this method can improve the accuracy of the crack identification from the vibration signal.It will be used in the non-damage detection technology for mini-... |
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| Keywords: | wavelet crack vibration detection spectrum estimation |
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