Direct nondestructive algorithm for shape defects evaluation

Resumen

An efficient numerical method based on a rigorous integral formulation is used to calculate precisely the acoustic eigenvalues of complex shaped objects and their associated eigenvectors. These eigenvalues are obtained and later used in acoustic nondestructive evaluation. This study uses the eigenvalues to implement a simple acoustic shape differ-entiation algorithm that is the key in our direct nondestructive analysis. Stability and convergence of the Galerkin boundary element method used herein are discussed. Fi-nally, some numerical examples are shown.

Autores: Ossandón, S., Klenner, J., Reyes, C.

Journal: Journal of Vibration and Acoustics

Journal Volume: 133

Journal Issue: 3

Journal Page: 031006 (6 pages)

Tipo de publicación: ISI

Fecha de publicación: 2011

Topics: nondestructive evaluation, acoustic eigenvalues, 3D Helmholtz equation, Galerkin boundary element method

DOI: 10.1115/1.4003199

URL de la publicación: https://www.researchgate.net/publication/257774714_Direct_Nondestructive_Algorithm_for_Shape_Defects_Evaluation