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
fDate :
6/1/1984 12:00:00 AM
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;
Journal_Title :
Physical Science, Measurement and Instrumentation, Management and Education - Reviews, IEE Proceedings A
DOI :
10.1049/ip-a-1.1984.0040
