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Title: An improved numerical-experimental method for damage location in structures
Author: Lopes, H.
Santos, J.V. Araújo dos
Mota Soares, C.M.
Guedes, R.M.
Vaz, M.A.P.
Keywords: Damage location
Rotations field
Mode shapes curvatures
Interferometric techniques
Issue Date: 2008
Publisher: B.H.V. Topping and M. Papadrakakis
Citation: Lopes, H.; Araújo dos Santos, J.V.; Mota Soares, C.M.; Guedes, R.M.; Vaz, M.A. (2008) - An improved numerical-experimental method for damage location in structures. In The Ninth International Conference on Computational Structures Technology. Athens-Greece. ISBN 978-1-905088-22-5
Abstract: An improvement of a curvature based numerical-experimental method for damage location in structures [1] is presented. The Mach-Zehnder shearography interferometer is used to measure the rotations field or the out-of-plane first order derivatives of mode shapes displacement field [2, 3]. The curvatures or second order derivatives are computed by a numerical method [4]. An aluminum beam with two small transversal cuts was tested for damaged location. The experimental results show a high correlation between the curvatures discontinuities field and the damages position. This study also demonstrates the superior performance of the curvature method using measured rotations field instead of measured displacements field.
Peer review: yes
ISBN: 978-1-905088-22-5
Appears in Collections:DMA - Resumos em Proceedings Não Indexados ao ISI/Scopus

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