DocumentCode
860370
Title
Wideband electromagnetic acoustic transducers utilising neodymium iron boron permanent magnets
Author
Edwards, C. ; Palmer, S.B.
Author_Institution
Dept. of Phys., Warwick Univ., Coventry, UK
Volume
26
Issue
5
fYear
1990
fDate
9/1/1990 12:00:00 AM
Firstpage
2080
Lastpage
2084
Abstract
The fabrication of electromagnetic acoustic transducers (EMATs) is described. It is shown that neodymium-iron-boron permanent magnets allow compact devices to be constructed. Pickup mechanisms in both magnetic and nonmagnetic metals are discussed and demonstrated experimentally. It is concluded that EMATs are suitable detectors for broadband laser generated ultrasound. Such systems, being noncontacting, can operate at high temperature
Keywords
acoustoelectric transducers; boron alloys; iron alloys; neodymium alloys; permanent magnets; ultrasonic materials testing; ultrasonic transducers; EMAT; NdFeB permanent magnets; broadband laser generated ultrasound; compact devices; wideband electromagnetic acoustic transducers pickup mechanism; Acoustic transducers; Boron; Iron; Magnetostriction; Neodymium; Optical pulse generation; Permanent magnets; Plasma sources; Steel; Wideband;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.104626
Filename
104626
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