Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12406
Title: ADaptive-scale damage detection for frame structures using beam-type wavelet finite element: Experimental validation
Authors: Zhu, S 
He, WY
Ren, WX
Keywords: Biologically inspired strategy
Experimental study
Multi-scale
Progressive damage detection
Wavelet finite element model
Issue Date: 2013
Publisher: World Scientific Publ Co Pte Ltd
Source: Journal of earthquake and tsunami, 2013, v. 7, no. 3, 1350024 How to cite?
Journal: Journal of Earthquake and Tsunami 
Abstract: The superior human vision system provides ingenious insight into an ideal damage detection strategy in which structural modeling scales are not only spatially varying but also dynamically changed according to actual needs. This paper experimentally examines the efficacy of a multi-scale damage detection method based on wavelet finite element model (WFEM). The beam-type wavelet finite element in this study utilizes the second-generation cubic Hermite multi-wavelets as interpolation functions. The dynamic testing results of a one-bay steel portal frame with multiple damages are employed in the experimental validation. Through a multi-stage updating of the WFEM, the multiple damages in the steel portal frame are detected in a progressive manner: the suspected region is first identified using a low-scale structural model, and the more accurate location and severity of the damage can be identified using a multi-scale model with local refinement. As the multi-scale WFEM considerably facilitates the adaptive change of modeling scales, the proposed multi-scale damage detection method can efficiently locate and quantify damage with minimal computation effort and a limited number of updating parameters and sensors, compared with conventional finite element methods.
URI: http://hdl.handle.net/10397/12406
ISSN: 1793-4311
DOI: 10.1142/S1793431113500243
Appears in Collections:Conference Paper

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