DocumentCode
1497048
Title
Quench detection of superconducting magnets using ultrasonic wave
Author
Ninomiya, A. ; Sakaniwa, K. ; Kado, H. ; Ishigohka, T. ; Higo, Y.
Author_Institution
Seikei Univ., Musashino, Japan
Volume
25
Issue
2
fYear
1989
fDate
3/1/1989 12:00:00 AM
Firstpage
1520
Lastpage
1523
Abstract
An ultrasonic quench-detection method for superconducting magnets is presented. This nondestructive method monitors the change of the acoustic transfer function of a superconducting magnet induced by a local temperature rise or an epoxy crack. Experiments were carried out on a small epoxy-impregnated magnet. The experimental results show that a local temperature rise of about 2-3 K can be detected by this method. It is concluded that the technique can provide early quench warning by monitoring continuously the change of the acoustic transfer function of the magnet
Keywords
superconducting magnets; ultrasonic materials testing; acoustic transfer function; epoxy crack; epoxy-impregnated magnet; local temperature rise; nondestructive method; quench warning; superconducting magnets; ultrasonic quench-detection; ultrasonic wave; Acoustic signal detection; Magnetic materials; Monitoring; Shape; Superconducting magnets; Temperature; Transducers; Transfer functions; Ultrasonic imaging; Voltage;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.92585
Filename
92585
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