EMAT generation and laser detection of single lamb wave modes

Zhiqi Guo; J. D. Achenbach; Sridhar Krishnaswamy

doi:10.1016/S0041-624X(97)00024-3

EMAT generation and laser detection of single lamb wave modes

Zhiqi Guo, J. D. Achenbach, Sridhar Krishnaswamy^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

The use of a single Lamb wave mode simplifies the interpretation of data in nondestructive testing of thin plates. In this work, an EMAT is specially configured to generate single Lamb wave modes and laser interferometry is used to detect the wave. A broadband path-stabilized Michelson interferometer is first used to check the conditions under which the EMAT truly generates a single mode on a thin plate. As an illustrative application of this system, the subsequent interaction of a single Lamb wave mode with crack-like notches is observed at high spatial resolution using the laser interferometer.

Original language	English (US)
Pages (from-to)	423-429
Number of pages	7
Journal	Ultrasonics
Volume	35
Issue number	6
DOIs	https://doi.org/10.1016/S0041-624X(97)00024-3
State	Published - Sep 1997

Keywords

EMAT
Lamb wave
Laser interferometer
NDE
Ultrasound

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1016/S0041-624X(97)00024-3

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title = "EMAT generation and laser detection of single lamb wave modes",

abstract = "The use of a single Lamb wave mode simplifies the interpretation of data in nondestructive testing of thin plates. In this work, an EMAT is specially configured to generate single Lamb wave modes and laser interferometry is used to detect the wave. A broadband path-stabilized Michelson interferometer is first used to check the conditions under which the EMAT truly generates a single mode on a thin plate. As an illustrative application of this system, the subsequent interaction of a single Lamb wave mode with crack-like notches is observed at high spatial resolution using the laser interferometer.",

keywords = "EMAT, Lamb wave, Laser interferometer, NDE, Ultrasound",

author = "Zhiqi Guo and Achenbach, {J. D.} and Sridhar Krishnaswamy",

note = "Funding Information: This work was carried out in the course of research supportedb y the Office of Naval Researchu ndergrant NOOO14-89-J-1362.",

year = "1997",

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T1 - EMAT generation and laser detection of single lamb wave modes

AU - Guo, Zhiqi

AU - Achenbach, J. D.

AU - Krishnaswamy, Sridhar

N1 - Funding Information: This work was carried out in the course of research supportedb y the Office of Naval Researchu ndergrant NOOO14-89-J-1362.

PY - 1997/9

Y1 - 1997/9

N2 - The use of a single Lamb wave mode simplifies the interpretation of data in nondestructive testing of thin plates. In this work, an EMAT is specially configured to generate single Lamb wave modes and laser interferometry is used to detect the wave. A broadband path-stabilized Michelson interferometer is first used to check the conditions under which the EMAT truly generates a single mode on a thin plate. As an illustrative application of this system, the subsequent interaction of a single Lamb wave mode with crack-like notches is observed at high spatial resolution using the laser interferometer.

AB - The use of a single Lamb wave mode simplifies the interpretation of data in nondestructive testing of thin plates. In this work, an EMAT is specially configured to generate single Lamb wave modes and laser interferometry is used to detect the wave. A broadband path-stabilized Michelson interferometer is first used to check the conditions under which the EMAT truly generates a single mode on a thin plate. As an illustrative application of this system, the subsequent interaction of a single Lamb wave mode with crack-like notches is observed at high spatial resolution using the laser interferometer.

KW - EMAT

KW - Lamb wave

KW - Laser interferometer

KW - NDE

KW - Ultrasound

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JO - Ultrasonics

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SN - 0041-624X

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EMAT generation and laser detection of single lamb wave modes

Abstract

Keywords

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