NDLI: Position estimation of local temperature rise in epoxy resin structure using acoustic transfer function

Content Provider	IEEE Xplore Digital Library
Author	Ninomiya, A. Kanda, Y. Ishigohka, T.
Copyright Year	1965
Abstract	A method of detecting a quench of a superconducting magnet using an ultrasonic technique is being developed. This method detects a change of acoustic transfer function caused by a local temperature rise inside the magnet. It was confirmed that the generation of local temperature rise inside the magnet can be detected by this method. However, it was not successful at locating the position of the local temperature rise. The authors tried to detect the location of the local temperature rise in a bulk structure made of epoxy resin as a model of a superconducting magnet impregnated by epoxy. The ultrasonic wave which passes through the structure is modified characteristically by a disturbance generated inside the structure. The authors investigated some theoretical aspects of the mechanism explaining the change of the acoustic transfer function induced by the local temperature rise using a one-dimensional model. They also carried out some experiments on this matter. The theoretical result agrees well with the experimental one.<>
Sponsorship	IEEE Magnetics Society
Starting Page	830
Ending Page	833
Page Count	4
File Size	299654
File Format	PDF
ISSN	00189464
Volume Number	28
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature Epoxy resins Superconducting magnets Acoustic signal detection Transfer functions Frequency Equations Acoustic transducers Finite element methods Acoustic waves
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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