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Ultrasonic field modelling for arbitrary non-contact transducer source
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UNSPECIFIED (2005) Ultrasonic field modelling for arbitrary non-contact transducer source. In: 3rd International Conference on Experimental Mechanics/3rd Conference of the Asian-Committee-on-Experimental-Mechanics, Singapore, SINGAPORE, NOV 29-DEC 01, 2004. Published in: Third International Conference on Experimental Mechanics and Third Conference of the Asian-Committee-on-Experimental-Mechanics, Pts 1and 2, 5852 (Part 1&2). pp. 515-519. ISBN 0-8194-5852-X. doi:10.1117/12.621554 ISSN 0277-786X.
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Official URL: http://dx.doi.org/10.1117/12.621554
Abstract
We present a model for transient ultrasonic wave generation by Electromagnetic Acoustical Transducers (EMATs). Analytical solutions are currently available only for few kinds of sources and our model combines these analytical solutions and numerical computation to predict the ultrasonic field generated by arbitrary sources. This model can be used to calculate bulk waves within samples as well as Surface waves on sample surfaces with the advantages of explicit physical meaning and quick processing speed over pure numerical calculations such as the Finite Element Method (FEM). We use the model to explain how static and dynamic magnetic fields generate ultrasonic waves in a sample. We wish to characterize the EMAT source in detail in order to tailor sources for optimal configuration for specific NDE applications. A Michelson laser interferometer is used to measure out of plane surface displacement of sample, and results agree well with the modelling simulation. The modelling can be used for arbitrary source.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | Q Science > QC Physics | ||||
Series Name: | PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) | ||||
Journal or Publication Title: | Third International Conference on Experimental Mechanics and Third Conference of the Asian-Committee-on-Experimental-Mechanics, Pts 1and 2 | ||||
Publisher: | SPIE-INT SOC OPTICAL ENGINEERING | ||||
ISBN: | 0-8194-5852-X | ||||
ISSN: | 0277-786X | ||||
Editor: | Quan, C and Chau, FS and Asundi, A and Wong, BS and Lim, CT | ||||
Official Date: | 2005 | ||||
Dates: |
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Volume: | 5852 | ||||
Number: | Part 1&2 | ||||
Number of Pages: | 5 | ||||
Page Range: | pp. 515-519 | ||||
DOI: | 10.1117/12.621554 | ||||
Publication Status: | Published | ||||
Title of Event: | 3rd International Conference on Experimental Mechanics/3rd Conference of the Asian-Committee-on-Experimental-Mechanics | ||||
Location of Event: | Singapore, SINGAPORE | ||||
Date(s) of Event: | NOV 29-DEC 01, 2004 |
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