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

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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

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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$38.00

[1] H. Kwun, S. Y. Kim, , G. M. Light: Mater. Eval. Vol. 61 (2003), p.80.

[2] Rose, J. L., Ultrasonic waves in solid media (Cambridge University Press, 1999).

[3] D. C. Gazis: J. Acoust. Soc. Am. Vol. 31 (1959) p.568.

[4] H. Kwun and K. A. Bartels: J. Acoust. Soc. Am. Vol. 99 (1996) p.962.

[5] D. N. Allyne and P. Cawley: J. Nondestruct. Eval. Vol. 15 (1996) p.11.

[6] Y. M. Cheong, D. H. Lee, and H. K. Jung: Ultrasonics, Vol. 42 (2004) p.883.

[7] H. Kwun and et al.: Mater. Eval. (2004) p.430.

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