Fibre optic system for the monitoring of asymmetric Lamb wave modulation in thin films

R. J. Dewhurst; B. A. Williams

Fibre optic system for the monitoring of asymmetric Lamb wave modulation in thin films

R. J. Dewhurst
, B. A. Williams

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

Abstract

For monitoring temporal modulation of a laser-generated asymmetric (a0) Lamb wave, a non-contact fibre optic sensor has been used. Simultaneously, an electromagnetic acoustic transducer (EMAT) sensed in-plane acoustic transients of the symmetric (S0) Lamb wave. Measurements in 75μm thick aluminium film show that a0 amplitude modulation is associated with a perturbation from the symmetric wave.

Original language	English
Pages (from-to)	1813-1815
Number of pages	2
Journal	Electronics Letters
Volume	33
Issue number	21
Publication status	Published - 9 Oct 1997

Keywords

Fibre-optic sensors
Ultrasonics

Cite this

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title = "Fibre optic system for the monitoring of asymmetric Lamb wave modulation in thin films",

abstract = "For monitoring temporal modulation of a laser-generated asymmetric (a0) Lamb wave, a non-contact fibre optic sensor has been used. Simultaneously, an electromagnetic acoustic transducer (EMAT) sensed in-plane acoustic transients of the symmetric (S0) Lamb wave. Measurements in 75μm thick aluminium film show that a0 amplitude modulation is associated with a perturbation from the symmetric wave.",

keywords = "Fibre-optic sensors, Ultrasonics",

author = "Dewhurst, \{R. J.\} and Williams, \{B. A.\}",

year = "1997",

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language = "English",

volume = "33",

pages = "1813--1815",

journal = "Electronics Letters",

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T1 - Fibre optic system for the monitoring of asymmetric Lamb wave modulation in thin films

AU - Dewhurst, R. J.

AU - Williams, B. A.

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N2 - For monitoring temporal modulation of a laser-generated asymmetric (a0) Lamb wave, a non-contact fibre optic sensor has been used. Simultaneously, an electromagnetic acoustic transducer (EMAT) sensed in-plane acoustic transients of the symmetric (S0) Lamb wave. Measurements in 75μm thick aluminium film show that a0 amplitude modulation is associated with a perturbation from the symmetric wave.

AB - For monitoring temporal modulation of a laser-generated asymmetric (a0) Lamb wave, a non-contact fibre optic sensor has been used. Simultaneously, an electromagnetic acoustic transducer (EMAT) sensed in-plane acoustic transients of the symmetric (S0) Lamb wave. Measurements in 75μm thick aluminium film show that a0 amplitude modulation is associated with a perturbation from the symmetric wave.

KW - Fibre-optic sensors

KW - Ultrasonics

M3 - Article

SN - 0013-5194

VL - 33

SP - 1813

EP - 1815

JO - Electronics Letters

JF - Electronics Letters

IS - 21

ER -

Fibre optic system for the monitoring of asymmetric Lamb wave modulation in thin films

Abstract

Keywords

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