Crack detection in thick annular components using ultrasonic guided waves

Abstract This paper provides an overview of a study on circumferential guided waves in a thick annulus. Both steady state, time-harmonic waves and transient waves are considered. Several solution methods are reviewed and numerical solutions are presented for the propagation of ultrasonic circumferen...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2000-01, Vol.214 (9), p.1163-1171
Main Authors: Qu, J, Berthelot, Y. H., Jacobs, L. J.
Format: Article
Language:English
Subjects:
Crack initiation
Crack propagation
Harmonic analysis
Ultrasonic waves
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract This paper provides an overview of a study on circumferential guided waves in a thick annulus. Both steady state, time-harmonic waves and transient waves are considered. Several solution methods are reviewed and numerical solutions are presented for the propagation of ultrasonic circumferential waves in a thick, curved, two-dimensional annular waveguide. The modal content of the signal and the displacement profiles across the wall thickness are investigated. These studies provide valuable guidance in selecting optimal parameters for use in applications of the guided wave technique to the detection of cracks on the inner surface of annular components. Experimental results show that the technique can be used on parts with complex geometries (e. g. the pitch shaft of a helicopter) to detect cracks that would not be detectable by standard ultrasonic inspection.
ISSN:0954-4062
2041-2983
DOI:10.1243/0954406001523605