Numerical Modeling of Ultrasonic Guided Waves for Damage Detection in Structures

Abstract:

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This work presents a numerical simulation of the behavior of stress guided waves (GWs) propagating in a multilayer system composed of porous materials. To this end, the damped Semi-analytical Finite Element (SFE) formulation proposed in [1] is extended to take the dry porosity into account. An application of waves propagating in two squared aluminum bars jointed by a weaker layer of porous adhesive is presented. Numerical results show that variations of the adhesive's porosity modify the GWs spectro-temporal patterns. These changes could be exploited to detect the level of adhesive porosity in a total nondestructive manner for the above structures.

Info:

Periodical:

Key Engineering Materials (Volumes 417-418)

Edited by:

M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee

Pages:

357-360

DOI:

10.4028/www.scientific.net/KEM.417-418.357

Citation:

E. Viola and A. Marzani, "Numerical Modeling of Ultrasonic Guided Waves for Damage Detection in Structures", Key Engineering Materials, Vols. 417-418, pp. 357-360, 2010

Online since:

October 2009

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Price:

$35.00

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