Share Email Print

Proceedings Paper

Transient elastic wave propagation and scattering in plates: comparison between pulsed TV-holography measurements and finite element method predictions
Author(s): Pablo Rodríguez-Gómez; José Carlos López-Vázquez; Cristina Trillo; Ángel F. Doval; José L. Fernández
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Pulsed TV-holography (PTVH) can be used for obtaining two-dimensional maps of instantaneous out-of-plane displacements in plates. In particular, our group has demonstrated that scattering patterns generated by the interaction of elastic waves with defects can be measured with PTVH and employed for quantitative characterization of damage in non-destructive inspection in plate structures. Recently, we have succeeded in obtaining a quantitative description of experimental scattering patterns produced by holes in harmonic regime using a finite element method (FEM) applied to a two-dimensional model based on the scalar wave equation, avoiding the standard and more complex vector approach based on the rigorous linear elasticity theory. In this work, a similar scheme is employed to characterize equivalent scattering phenomena but in transient regime. Simulated propagation and scattering patterns are tried with the scalar FEM and the corresponding experimental propagation and interaction of Rayleigh-Lamb waves with artificial defects in plates are measured using our specifically developed PTVH system. On this basis, a comparison between experimental maps and FEM simulated maps is developed.

Paper Details

Date Published: 11 September 2012
PDF: 6 pages
Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 84130Z (11 September 2012); doi: 10.1117/12.977644
Show Author Affiliations
Pablo Rodríguez-Gómez, Univ. de Vigo (Spain)
José Carlos López-Vázquez, Univ. de Vigo (Spain)
Cristina Trillo, Univ. de Vigo (Spain)
Ángel F. Doval, Univ. de Vigo (Spain)
José L. Fernández, Univ. de Vigo (Spain)

Published in SPIE Proceedings Vol. 8413:
Speckle 2012: V International Conference on Speckle Metrology
Ángel Fernandez Doval; Cristina Trillo, Editor(s)

© SPIE. Terms of Use
Back to Top