DocumentCode
929696
Title
High-voltage spark discharge source as an ultrasonic generator
Author
Cooper, J.A. ; Dewhurst, R.J. ; Moody, S. ; Palmer, S.B.
Author_Institution
University of Hull, Department of Applied Physics, Kingston upon Hull, UK
Volume
131
Issue
4
fYear
1984
fDate
6/1/1984 12:00:00 AM
Firstpage
275
Lastpage
281
Abstract
A high-voltage spark-discharge source acting as an impulsive ultrasonic generator has been designed and tested. Ultrasound generated by this source has been detected and compared with ultrasound generated by a Q-switched Nd:YAG laser pulse focused to produce a plasma on the surface of the metal sample. The two sources have been shown to exhibit similar ultrasound generation characteristics. Additionally, a surface breaking crack has been detected using spark-source-generated acoustic waves, and surface damage caused by the spark source has been investigated.
Keywords
spark gaps; ultrasonic equipment; ultrasonic materials testing; high-voltage spark-discharge source; impulsive ultrasonic generator; spark-source-generated acoustic waves; surface breaking crack; surface damage; ultrasound generation characteristics;
fLanguage
English
Journal_Title
Physical Science, Measurement and Instrumentation, Management and Education - Reviews, IEE Proceedings A
Publisher
iet
ISSN
0143-702X
Type
jour
DOI
10.1049/ip-a-1.1984.0040
Filename
4646201
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