| 王慧,王晓乾.基于模态小波分析的棒体裂纹损伤识别[J].测控技术,2016,35(12):26-29 |
| 基于模态小波分析的棒体裂纹损伤识别 |
| Damage Identification of the Bar's Crack Based on Modal and Wavelet Analysis |
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| DOI： |
| 中文关键词: 裂纹 模态分析 小波分析 损伤识别 损伤位置 |
| 英文关键词:crack modal analysis wavelet analysis damage identification damage location |
| 基金项目: |
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| 摘要点击次数: 941 |
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| 中文摘要: |
| 为了克服传统无损检测方法检测缺陷成本高、局部化等缺点，以含有裂纹损伤的棒体为研究对象，采用模态分析、结合时频小波分析的方法，实现对其损伤位置的精确定位和损伤程度的小误差量化，并通过实验论证其合理性。研究结果有助于及时发现裂纹损伤，从而避免发生重大事故，同时此方法可用于复杂结构的无损检测和评估。 |
| 英文摘要: |
| To overcome the disadvantages of the traditional nondestructive testing methods such as the high cost and localization,the bars with cracks are taken as the research object.The identification of damage location and small error quantization of damage degree are researched by using theoretical modal analysis，experimental modal analysis combined with time frequency wavelet analysis，and the rationality is demonstrated through experiments.The results can help to detect the crack damage in time，so as to avoid major accidents，at the same time，this method can be used in nondestructive testing and evaluation of complex structures. |
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