Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20628
Title: Sensitivity studies of parameters for damage detection of plate-like structures using static and dynamic approaches
Authors: Yam, LH
Li, YY
Wong, WO 
Keywords: Damage detection
Damage index
Plate-like structures
Sensitivity analysis
Static and dynamic parameters
Issue Date: 2002
Publisher: Pergamon Press
Source: Engineering structures, 2002, v. 24, no. 11, p. 1465-1475 How to cite?
Journal: Engineering structures 
Abstract: In this paper, the sensitivities of static and dynamic parameters to damage occurring in plate-like structures are investigated systematically, and corresponding damage indices are proposed to analyse their identification capabilities. For static analyses, damage indices are formulated using the out-of-plane deflection, and its slope and curvature based on a finite element model; for dynamic analyses, two damage indices related to the curvature mode shape (CMS) and the strain frequency response function (SFRF) are proposed. Compared with the existing results, the effects of the numbers of the selected modes and defective areas on the CMS index and the influence of the "natural frequency shift" on the SFRF index are investigated. Numerical simulations and experimental tests are performed to verify the identification capability of the proposed indices, and guidance on selecting the proper parameters for damage detection is given.
URI: http://hdl.handle.net/10397/20628
ISSN: 0141-0296
EISSN: 1873-7323
DOI: 10.1016/S0141-0296(02)00094-9
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