| 基于小波理论的悬臂梁裂纹定位研究 |
| |
| 引用本文： | 张晓兵,杨永红. 基于小波理论的悬臂梁裂纹定位研究[J]. 山西建筑, 2007, 33(12): 77-78 |
| |
| 作者姓名： | 张晓兵 杨永红 |
| |
| 作者单位： | 1. 中铁十二局秦岭指挥部,陕西柞水,711706
2. 山西省体育科学研究所,山西太原,030024 |
| |
| 摘 要： | 利用小波多分辨率分析,对含裂纹悬臂梁的裂纹进行定位研究,数值算例表明:多分辨率分析的高频重构部分的系数峰值清楚地指示出裂纹位置,并对不同消失矩的小波的识别效果进行了比较,发现如果只是进行裂纹定位,低阶消失矩的小波的指示效果更好。
|
| 关 键 词： | 裂纹检测 小波多分辨率分析 梁 |
| 文章编号： | 1009-6825(2007)12-0077-02 |
| 修稿时间： | 2006-12-20 |
Crack location of a cantilever beam based on wavelet Multi-Resolution Analysis |
| |
| ZHANG Xiao-bing,YANG Yong-hong. Crack location of a cantilever beam based on wavelet Multi-Resolution Analysis[J]. Shanxi Architecture, 2007, 33(12): 77-78 |
| |
| Authors: | ZHANG Xiao-bing YANG Yong-hong |
| |
| Affiliation: | ZHANG Xiao-bing YANG Yong-hong |
| |
| Abstract: | In this paper,the wavelet Multi-Resolution Analysis(MRA) is applied to the spatial-frequency analysis of the distribution of the strain energy of a cantilever beam under the dead load.The simulation results illustrate that the position of the crack is located by the sudden change in the reconstruction coefficients of the high frequency component.Although both haar and db3 wavelet can be used for crack detection,the result indicated the haar wavelet is more suitable to discover the crack location comparing with db3 wavelet. |
| |
| Keywords: | crack detection wavelet Multi-Resolution Analysis beam |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
