离散小波方法应用于梁和平板的破损侦测之研究

文章旨在利用小波转换方法来侦测一个铝合金的梁与板的裂缝.研究中将以一维离散小波转换和二维离散小波转换为基础来检测含双重缺陷之梁与板,并经由数值模拟分析以及实验共同进行并比较其结果.测试结果显示,离散小波分析方法可以有效地找出结构中多个缺陷位置,并可应用在其他的复杂结构上.

Crack Identification in Beams and Plates by Discrete Wavelet Transform Method

The purpose of this study is to detect the cracks of an aluminum beam and a plate by wavelet transform. A double-cracked beam and a plate with multiple cracks are evaluated by means of discrete wavelet transform in the present research,in which one-dimensional and two-dimensional discrete wavelet transforms are employed to detect the cracks on the beam and the plate,respectively. The results obtained from the experiments are compared with those obtained from the numerical modeling analysis. The experimental results reveal that the proposed modal analysis and the discrete wavelet transforms can effectively identify the damage locations and can be applied to more complex structures.