Contactless mode-selective resonance ultrasound spectroscopy : Electromagnetic acoustic resonance

Ogi, Hirotsugu; Ledbetter, Hassel; Kim, Sudook et al.

Journal of the Acoustical Society of America, 1999, 106(2), 660-665

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Identifier to cite or link to this item: https://hdl.handle.net/11094/84152

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Title
Contactless mode-selective resonance ultrasound spectroscopy : Electromagnetic acoustic resonance
Creator
NRID
1000090252626 1000090252626
researchmap permalink
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Scopus Author ID
35563683500 35563683500
ORCID
0000-0002-9602-5194 0000-0002-9602-5194
CreatorName
Ogi, Hirotsugu
CreatorName
Ledbetter, Hassel
CreatorName
Kim, Sudook
NRID
1000080112027 1000080112027
CreatorName
Hirao, Masahiko
Description
Hirotsugu Ogi, Hassel Ledbetter, Sudook KimLedbetter, Masahiko Hirao. Contactless mode-selective resonance ultrasound spectroscopy: Electromagnetic acoustic resonance. Journal of the Acoustical Society of America, 1999, 106(2), 660. https://doi.org/10.1121/1.427607.
Abstract
A noncontacting resonant-ultrasound-spectroscopy (RUS) method for measuring elastic constants and internal friction of conducting materials is described, and applied to monocrystalline copper. This method is called electromagnetic acoustic resonance (EMAR). Contactless acoustic coupling is achieved by energy transduction between the electromagnetic field and the ultrasonic vibrations. A solenoidal coil and static magnetic field induce Lorentz forces on specimen surfaces without using a coupling agent. By changing the field direction, a particular set of vibration modes can be selectively excited and detected, an advantage in identifying the vibration modes of the observed resonance peaks. Contactless coupling allows the measure of intrinsic internal friction free from energy loss associated with contact coupling. The elastic constants and internal friction measured by EMAR are compared with those by the usual RUS method for a rectangular- parallelepiped copper monocrystal. Both methods yielded the same elastic constants despite fewer resonant peaks in the EMAR case. The two methods gave essentially the same shear-mode internal friction, but the RUS method gave higher volume-mode internal friction.
Publisher
Acoustical Society of America
Source Title
Journal of the Acoustical Society of America
Volume (Issue)
106(2)
Page
660-665
Date of Issued
1999-08
Language
English
Handle URL
https://hdl.handle.net/11094/84152
PISSN
00014966
NCID
AA00253792
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1121/1.427607
Access Rights
open access
CopyRight
Copyright 1999 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article