Application of Laser-Generated Ultrasound for Evaluation of Thickness Reduction in Carbon Steel Pipes

Jong Ho Park; Joon Hyun Lee; Gyeong Chul Seo; Sang Woo Choi

doi:10.4028/www.scientific.net/KEM.321-323.743

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 321-323Application of Laser-Generated Ultrasound for...

Application of Laser-Generated Ultrasound for Evaluation of Thickness Reduction in Carbon Steel Pipes

Abstract:

In carbon steel pipes of nuclear power plants, local wall thinning may result from erosion-corrosion or flow-accelerated corrosion(FAC) damage. Local wall thinning is one of the major causes for the structural fracture of these pipes. Therefore, assessment of local wall thinning due to corrosion is an important issue in nondestructive evaluation for the integrity of nuclear power plants. In this study, laser-generated ultrasound technique was employed to evaluate local wall thinning due to corrosion. Guided waves were generated in the thermoelastic regime using a Q-switched pulsed Nd:YAG laser with a linear slit array. . In this paper, time-frequency analysis of ultrasonic waveforms using wavelet transform allowed the identification of generated guided wave modes by comparison with the theoretical dispersion curves. Modes conversion and group velocity were employed to detect thickness reduction.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

743-746

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.743

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Cite this paper

Online since:

October 2006

Authors:

Jong Ho Park, Joon Hyun Lee, Gyeong Chul Seo, Sang Woo Choi

Keywords:

Guided Wave, Laser-Generated Ultrasound, Mode Conversion, Thickness Reduction, Wave Velocity, Wavelet Transform (WT)

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References

[1] J.L. Rose, S.P. Pelts, M.J. Quarry : Ultrasonics 36(1998), pp.163-169.

Google Scholar

[2] J.C. Cheng, T.H. Wang, S.Y. Zang : Applied Physics B Vol. 70(2000), pp.57-63.

Google Scholar

[3] M.Z. Silva, R. Gouyon, F. Lepoutre : Ultrasonics 41(2003), pp.301-305.

Google Scholar

[4] Kyungyoung Jhang, Hongjoon Kim, Hyunmook Kim and Job Ha : Journal of the Korean Society for Nondestructive Testing, Vol. 22(2002), pp.637-642.

Google Scholar

[5] Jian Li and Joseph L. Rose : IEEE Transaction on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 48(2001), No. 3, pp.761-768.

Google Scholar

[6] Francesco Lanza di Scalea, Tobias P. Berndt, James B. Spicer, B. Boro Djordjevic : IEEE Transaction on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 46(1999).

Google Scholar