Flaw shape reconstruction from SH-wave array ultrasonic data using time domain linearized inverse scattering method

K. Kimoto, S. Hirose

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A linearized inverse scattering method, so called the Kirchhoff inversion, is formulated in time domain for SH-waves measured by a contact ultrasonic transducer and tested using experimental data. The data for reconstruction are experimentally obtained by measuring ultrasonic echoes from artificial flaws in steel plate specimens. For an efficient and accurate data collection, a contact SH-wave linear array transducer is used. The shapes of the artificial flaws are reconstructed by the Kirchhoff inversion and the conventional SAFT (Synthetic Aperture Focusing Technique) using the waves from a single ray path. Comparison of the two methods shows that the Kirchhoff inversion works well for experimental data and outperforms SAFT although only an illuminated portion of the flaw boundaries is reconstructed by either method. In order to gain more information on the flaw boundaries, the Kirchhoff inversion which takes into account multiple ray paths is also tested with the same experimental data. As a result, it is shown that a larger part of the flaw boundaries can be visualized by considering the multiple ray paths.

Original languageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation Volume 24
Pages828-835
Number of pages8
DOIs
Publication statusPublished - Apr 9 2005
Externally publishedYes
EventReview of Progress in Quantitative Nondestructive Evaluation - Golden, CO, United States
Duration: Jul 25 2004Jul 30 2004

Publication series

NameAIP Conference Proceedings
Volume760
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherReview of Progress in Quantitative Nondestructive Evaluation
Country/TerritoryUnited States
CityGolden, CO
Period7/25/047/30/04

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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