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The optimization of lamb and Rayleigh wave generation using wideband-low-frequency EMATs
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UNSPECIFIED (2003) The optimization of lamb and Rayleigh wave generation using wideband-low-frequency EMATs. In: 29th Annual Review of Progress in Quantitative Nondestructive Evaluation, WESTERN WASHINGTON UNIV, BELLINGHAM, WA, JUL 14-19, 2002. Published in: REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 22A AND 22B, 20 (Part A&B). pp. 297-304. ISBN 0-7354-0117-9.
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Abstract
This paper describes a non-contact ElectroMagnetic Acoustic Transducer (EMAT) that can be used to generate both Lamb and Rayleigh waves on metal samples. The generated waves are wideband and low frequency with a dominant frequency content centred on approximately 200kHz extending to around 500kHz. Detection of the waves is achieved using a linear coil detection EMAT. The transducers (generator & detector) have been used on both aluminium and steel, but operate more efficiently on aluminium due to its lower electrical resistance and density when compared to steel. Some considerations are described for the design of the generation EMAT including applications where the dynamic field from the coil alone is used to obtain the Lorentz interaction with the sample surface eddy current.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |
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Series Name: | REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION | ||||
Journal or Publication Title: | REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 22A AND 22B | ||||
Publisher: | AMER INST PHYSICS | ||||
ISBN: | 0-7354-0117-9 | ||||
Editor: | Thompson, DO and Chimenti, DE | ||||
Official Date: | 2003 | ||||
Dates: |
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Volume: | 20 | ||||
Number: | Part A&B | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 297-304 | ||||
Publication Status: | Published | ||||
Title of Event: | 29th Annual Review of Progress in Quantitative Nondestructive Evaluation | ||||
Location of Event: | WESTERN WASHINGTON UNIV, BELLINGHAM, WA | ||||
Date(s) of Event: | JUL 14-19, 2002 |
Data sourced from Thomson Reuters' Web of Knowledge
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