Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

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

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

For access to this article, please select a purchase option:

Buy article PDF
£12.50
(plus tax if applicable)
Add to cart
Buy Knowledge Pack
10 articles for £75.00
(plus taxes if applicable)
Add to cart

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

© IEE
Published

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 75 µm thick aluminium film show that a0 amplitude modulation is associated with a perturbation from the symmetric wave.

Inspec keywords: photoacoustic effect; amplitude modulation; surface acoustic waves; metallic thin films; surface acoustic wave transducers; surface acoustic wave waveguides; aluminium; ultrasonic measurement; fibre optic sensors

Other keywords: electromagnetic acoustic transducer; noncontact fibre optic sensor; in-plane acoustic transients; asymmetric Lamb wave modulation; amplitude modulation; 75 micron; symmetric wave perturbation; temporal modulation; Al

Subjects: Acoustic wave devices; Ultrasonics, quantum acoustics, and physical effects of sound; Fibre optic sensors; Transduction; devices for the generation and reproduction of sound; Fibre optic sensors; fibre gyros; Photoacoustics; Mechanical and acoustical properties of solid surfaces and interfaces; Measurement of acoustic variables; Other nonelectric variables measurement; Sonic and ultrasonic transducers and sensors

References

    1. 1)
      • B.A. Williams , R.J. Dewhurst . Differential fibre-optic sensing oflaser-generated ultrasound. Electron. Lett. , 391 - 392
    2. 2)
      • R.J. Dewhurst , C. Edwards , A.D.W. McKie , S.B. Palmer . Estimation of thethickness of thin metal sheet using laser-generated ultrasound. Appl. Phys. Lett. , 1066 - 1068
    3. 3)
      • S.E. Bobbin , J.W. Wagner , R.C. Cammarata . Interpretation of laser-generatedlow order Lamb waves for elastic modulus measurements in thin films. Ultrasonics , 87 - 90
    4. 4)
      • J.B. Spicer , A.D.W. McKie , J.W. Wagner . Quantitative theory for laserultrasonic waves in thin plates. Appl. Phys. Lett. , 1882 - 1884
    5. 5)
      • L. Noui , R.J. Dewhurst . A laser-beam deflection technique for the quantitativedetection of ultrasonic Lamb waves. Ultrasonics , 425 - 432
    6. 6)
      • Spicer, J.B.: 1991, Ph.D, Johns Hopkins University, MD, USA.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19971180
Loading

Related content

content/journals/10.1049/el_19971180
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
Print this page
This is a required field
Please enter a valid email address