Spectral correlation filters for flaw detection

K. D. Donohue, H. Y. Cheah

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations


This paper presents a filtering approach that exploits structural differences between the grain and flaw echo through spectral correlation. Analytical and simulation results demonstrate that back-scattered energy from many randomly distributed scatterers within a resolution cell results in no spectral correlation, while back-scattered energy from resolution cells with only a few scatterers exhibits significant spectral correlation. Performance differences between simple spectral correlation filters and conventional spectral filters are discussed for simple and complex (more than one effective scattering center) defects.

Original languageEnglish
Pages (from-to)725-728
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
StatePublished - 1995
EventProceedings of the 1995 IEEE Ultrasonics Symposium. Part 1 (of 2) - Seattle, WA, USA
Duration: Nov 7 1995Nov 10 1995

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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