Application of Magnetostrictive Transducer for the Long-Range Guided Wave Inspection

Abstract:

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The leakage of the pipes is a major issue for the safety of industrial structures. However, in many cases, because of their geometrical complexity and inaccessibility, it is difficult to inspect them by the conventional NDE method. A long-range guided wave inspection, thus, is an option to inspect them. A torsional vibration mode, T(0,1) shows many advantages in a long-range guided wave examination of a pipe, such as no dispersion characteristic, no radial displacement and low attenuation. However, it is not easy to fabricate a transducer with an array of piezoelectric elements for generation of torsional vibration mode and even expensive. Recently a magnetostrictive metal strip sensor was used for a generation of the torsional vibration modes in a pipe and this technique has shown several advantages for practical applications. This study investigated the applicability of a long-rang guided ultrasonic method to the detection of artificial notches even in the presence of various foreign objects.

Info:

Periodical:

Key Engineering Materials (Volumes 345-346)

Edited by:

S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim

Pages:

1295-1298

DOI:

10.4028/www.scientific.net/KEM.345-346.1295

Citation:

Y. M. Cheong et al., "Application of Magnetostrictive Transducer for the Long-Range Guided Wave Inspection", Key Engineering Materials, Vols. 345-346, pp. 1295-1298, 2007

Online since:

August 2007

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Price:

$35.00

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