Abstract
Structural damage often results in a localized stiffness change, which affects the dynamic characteristics of the structure. It is well documented that structural damage causes little change to displacement-based mode shapes, Yuen [1]. Therefore, experimental damage detection methods solely based on the analysis of experimentally determined mode shapes, e.g. Liang et al. [2] and Chang et al. [3], often are not overly sensitive in their location abilities. This is especially the case when damage is located near nodes of displacement. The sensitivity of these procedures is also affected by the errors typically introduced during modal analysis curve fitting.
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References
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Ratcliffe, C.P., Crane, R.M. (2007). Characteristics of Operational Displacement and Curvature Shapes and Their Effect on Curvature Based Damage Detection Algorithms. In: Gdoutos, E.E. (eds) Experimental Analysis of Nano and Engineering Materials and Structures. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6239-1_202
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DOI: https://doi.org/10.1007/978-1-4020-6239-1_202
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