Numerical predictions of surface wave phenomena for ultrasonic NDE

Author

Lord, W. ; You, Z. ; Lusk, M. ; Ludwig, R.

Author_Institution

Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO, USA

fYear

1988

fDate

2-5 Oct 1988

Firstpage

1065

Abstract

Finite-element analysis formulation has been developed for the simulation of ultrasonic nondestructive evaluation phenomena, which include the effects of finite aperture transducers and anisotropic material properties. The computer code has been validated qualitatively for 2-D simulations of elastic-wave propagation in an aluminium block by comparison with experimental measurements, and quantitatively for 2-D simulations of point sources acting on an infinite half-space by comparison with an analytical Cagniard-de-Hoop formulation. The authors describe how the finite-element formulation can be used to predict not only longitudinal and shear-wave propagation, but also the interaction of surface waves with cracks in materials

Keywords

finite element analysis; nondestructive testing; ultrasonic materials testing; 2-D simulations; Al; Cagniard-de-Hoop formulation; anisotropic material properties; computer code; cracks; elastic-wave propagation; experimental measurements; finite aperture transducers; finite-element analysis; infinite half-space; longitudinal wave propagation; materials; numerical predictions; point sources; shear-wave propagation; surface wave phenomena; ultrasonic NDE; ultrasonic nondestructive evaluation; Aluminum; Analytical models; Anisotropic magnetoresistance; Apertures; Computational modeling; Computer simulation; Finite element methods; Surface waves; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1988. Proceedings., IEEE 1988

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/ULTSYM.1988.49541

Filename

49541