A finite element study of transient wave propagation in plates

Studies of transient wave propagation in plates were carried out to establish a basis for the impact-echo technique as a nondestructive test for flaw detection in concrete. The surface displacements caused by stress waves generated by point impact on a plate were calculated using both the Green’s fu...

Full description

Saved in:
Bibliographic Details
Published in:Journal of research of the National Bureau of Standards (1977) 1987-07, Vol.92 (4), p.267-278
Main Authors: Sansalone, M., Carino, N.J., Hsu, N.N.
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Studies of transient wave propagation in plates were carried out to establish a basis for the impact-echo technique as a nondestructive test for flaw detection in concrete. The surface displacements caused by stress waves generated by point impact on a plate were calculated using both the Green’s function solution and the finite element method; displacement waveforms obtained by the two approaches showed good agreement. Displacement and stress fields in a plate were studied using finite element analysis. It was shown that transient point load applied normal to a stress-free boundary gives rise to P- and S- “wakes”—disturbances trailing the P- and S-waves. The displacement and stress fields in each wake resemble those in the preceding wave.
ISSN:0160-1741
2376-5259
DOI:10.6028/jres.092.025