Abstract
In this paper two methods for damage localization, the IDDM (Interpolation Damage Detecting Method), and the Modal Shape Curvature Method (MSCM) are applied to the same experimental case of a cantilever aluminum beam for which several different damage scenarios have been artificially reproduced in laboratory. IDDM is a new method recently proposed in literature which is on the definition of a damage-sensitive feature in terms of the accuracy of a spline function interpolating the Operational Displacement Shapes of the structure. This paper will present a comparison between the two methods on experimental data from a laboratory bench structure. Results show that, due to the small changes of the damage features induced by damage, both methods require a high-quality data set to provide a reliable damage localization even if the number of false alarms is slightly lower if the IDDM is applied.
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Busca, G., Limongelli, M.P. An experimental evaluation of the reliability of a damage localization algorithm based on FRF interpolation. J Civil Struct Health Monit 5, 427–439 (2015). https://doi.org/10.1007/s13349-015-0126-7
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DOI: https://doi.org/10.1007/s13349-015-0126-7