Share Email Print
cover

Proceedings Paper

Recent Advances In Feature Extraction Techniques Being Developed For Ultrasonic Examination Of Austenitic Stainless Steel Welds
Author(s): S. J. Mech; J. S. Emmons; T. E. Michaels
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This paper describes techniques being developed to characterize the features found during ultrasonic examination of stainless steel welds which are indicative of defects. Ultrasonic waveforms obtained from both defects and grain boundaries have similar time-domain characteristics. This phenomenon, together with variable signal attenuation and dispersion, is commonly encountered. The problem is to develop feature extraction techniques which will enable the examiner to discriminate reliably between weld defect signals and the other noise. Techniques presented use both time and frequency domain algorithms. The use of these techniques has demonstrated significantly better discrimination than conventional ultrasonic methods.

Paper Details

Date Published: 9 January 1979
PDF: 9 pages
Proc. SPIE 0155, Image Understanding Systems and Industrial Applications I, (9 January 1979); doi: 10.1117/12.956751
Show Author Affiliations
S. J. Mech, Hanford Engineering Development Laboratory (United States)
J. S. Emmons, Hanford Engineering Development Laboratory (United States)
T. E. Michaels, Hanford Engineering Development Laboratory (United States)


Published in SPIE Proceedings Vol. 0155:
Image Understanding Systems and Industrial Applications I
Ram Nevatia, Editor(s)

© SPIE. Terms of Use
Back to Top