基于结构动力特性的损伤检测可视化方法

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 7-13.

论文

基于结构动力特性的损伤检测可视化方法

聂振华; 程良彦; 马宏伟

作者信息 +

Visualization of vibration-based structural damage detection

Nie Zhen-hua; Cheng Liang-yan; Ma Hong-wei

Author information +

文章历史 +

摘要

提出基于结构动力响应的损伤识别多指标分层及融合可视化展示方法，使结构的损伤信息以可视化的图像直观地展示出来。以简支梁为研究对象，应用当前发展成熟的多个指标对单裂纹和双裂纹分别进行分层展示。应用自适应加权最小二乘法对多层图像进行融合可视化，解决了单一指标得到可视化结果仅能包含有限的损伤信息，容易造成漏判的缺点,使得融合结果更加精确。基于结伤动力特性的损伤检测可视化将为结构损伤识别和健康监测提供新的展示平台。

Abstract

The method of hierarchical visualization and visualization fusion of vibration-based structural damage detection is put forward creatively. This method can display the structural damage information visually using visual images. Taking the simple beam for example, the hierarchical images are obtained using four currently maturely applied indexes for the conditions of one damage and two damages, respectively. The hierarchical images are fused with auto-adaptive weighted least squares method, which can solve the weakness that the visual image of a single index only contains limited damage information. So, the results are more accurate. The visualization of vibration-based structural damage detection will provide a new display platform for damage detection and structural health monitoring.

导出引用

聂振华;程良彦;马宏伟. 基于结构动力特性的损伤检测可视化方法[J]. 振动与冲击, 2011, 30(12): 7-13

Nie Zhen-hua;Cheng Liang-yan;Ma Hong-wei. Visualization of vibration-based structural damage detection[J]. Journal of Vibration and Shock, 2011, 30(12): 7-13