A numerical-experimental method for damage location based on rotation fields spatial differentiation

Lopes, Hernani; Santos, J.V. Araújo; Soares, C.M. Mota; Guedes, Rui M.; Vaz, M.A.P.

http://hdl.handle.net/10198/7002

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Abstract(s)

This paper presents a structural damage location method that decreases the number of spatial differentiations needed to compute modal curvature ﬁelds. The method is numerically and experimentally applied to isotropic and laminated rectangular plates, respectively. A speckle shear interferometer is used to measure the rotation ﬁelds of the laminated plate, while the isotropic plate is analysed by ﬁnite elements. It was found that the Gaussian differentiation is the most suited technique to compute the curvature ﬁelds. It is also demonstrated the superior performance of the curvature method using measured rotation ﬁelds instead of measured displacement ﬁelds.

Keywords

Multiple damage location Laminated plate

URI

http://hdl.handle.net/10198/7002

Citation

Lopes, H.; Araújo dos Santos, J.V.; Mota Soares, C.M.; Miranda Guedes, R.J.; Pires Vaz, M.A. (2011). A numerical-experimental method for damage location based on rotation fields spatial differentiation. Computers and Structures. ISSN 0045-7949. 89:19-20, p. 1754-1770