One sensor linear location using dispersive A0 mode in thin plates

For this purpose, linear location with one sensor using the arrival times of two Lamb modes (S0 and A0) has been proposed. Furthermore, one author demonstrated that planar source location was possible with two sensors using this technique. However, a Lamb wave originating from an out-of-plane impact...

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Bibliographic Details
Published in:Journal of materials science 2005-09, Vol.40 (18), p.5111-5113
Main Authors: TOYAMA, N, IIJIMA, T, TAKATSUBO, J
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Measurement and testing methods
Physics
Solid mechanics
Structural and continuum mechanics
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Summary:For this purpose, linear location with one sensor using the arrival times of two Lamb modes (S0 and A0) has been proposed. Furthermore, one author demonstrated that planar source location was possible with two sensors using this technique. However, a Lamb wave originating from an out-of-plane impact contains a predominant A0 mode and little S0 mode. Thus, measuring the arrival time of the S0 mode is always difficult, resulting in large errors in estimating the location. To overcome this difficulty, we propose a linear location method with one sensor, using only the A0 mode for a source with out-of-plane motion. [Materials: CFRP, Al].
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-005-1365-5