%0 Journal Article
%T Damage detection of a T-shaped panel by wave propagation analysis in the plane stress
%A M. Rucka
%A W. Witkowski
%A J. Chr¨® cielewski
%A K. Wilde
%J Archives of Civil Engineering
%D 2012
%I Polish Academy of Sciences
%R 10.2478/v.10169-012-0001-4
%X A computational approach to analysis of wave propagation in plane stress problems is presented. The initial-boundary value problem is spatially approximated by the multi-node C0 displacement-based isoparametric quadrilateral finite elements. To integrate the element matrices the multi-node Gauss-Legendre-Lobatto quadrature rule is employed. The temporal discretization is carried out by the Newmark type algorithm reformulated to accommodate the structure of local element matrices. Numerical simulations are conducted for a T-shaped steel panel for different cases of initial excitation. For diagnostic purposes, the uniformly distributed loads subjected to an edge of the T-joint are found to be the most appropriate for design of ultrasonic devices for monitoring the structural element integrity.
%K Wave propagation
%K damage detection
%K steel T-shaped panel
%K spectral element method
%U http://versita.metapress.com/content/q6w2001207834837/?p=94628877c8ce48579f480a83d36436d1&pi=0