船舶力学
船舶力學
선박역학
JOURNAL OF SHIP MECHANICS
2008年
3期
464-472
,共9页
离散小波转换%非破坏检测%振动模态
離散小波轉換%非破壞檢測%振動模態
리산소파전환%비파배검측%진동모태
one-dimensional discrete wavelet transform%two-dimensional discrete wavelet transform%modal analysis%non-destructive detection
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.
文章旨在利用小波轉換方法來偵測一箇鋁閤金的樑與闆的裂縫.研究中將以一維離散小波轉換和二維離散小波轉換為基礎來檢測含雙重缺陷之樑與闆,併經由數值模擬分析以及實驗共同進行併比較其結果.測試結果顯示,離散小波分析方法可以有效地找齣結構中多箇缺陷位置,併可應用在其他的複雜結構上.
문장지재이용소파전환방법래정측일개려합금적량여판적렬봉.연구중장이일유리산소파전환화이유리산소파전환위기출래검측함쌍중결함지량여판,병경유수치모의분석이급실험공동진행병비교기결과.측시결과현시,리산소파분석방법가이유효지조출결구중다개결함위치,병가응용재기타적복잡결구상.
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 transforill 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