Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Title : Xinghai Excellent Young Researcher of Dalian University of Technology; Assistant Director, Research Center for Cross-Sea Transportation Engineering of Dalian University of Technology
Title of Paper:Real-time fast damage detection of shear structures with random base excitation
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Date of Publication:2015-10-01
Journal:MEASUREMENT
Included Journals:SCIE、EI、Scopus
Volume:74
Page Number:92-102
ISSN No.:0263-2241
Key Words:Fast damage detection; Damage localization; Random base excitation; Shear structures; Jerk energy; Curvature difference
Abstract:This paper validates the use of two jerk energy-based damage localization methods, proposed for the regular test with pulse excitation in earlier work, in real-time damage detection of shear structures with random base excitation. First, a 20-story shear structure numerical model is considered to provide numerical validation with random base excitation. Then, performance of the two methods in damage detection is experimentally validated through a laboratory-scale 6-story shear structure model. Both experimental and numerical results of single and multiple damage cases with different levels of stiffness loss indicate that the two jerk energy-based methods can also be used in real-time damage detection of shear structures with random base excitation. The two jerk energy-based methods perform well in the presence of high noise level; moreover, they are model-free that avoid establishing the structural finite element model and model updating. (C) 2015 Elsevier Ltd. All rights reserved.
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