Abstract
The objective of this research is to locate and evaluate wall thinning in pipe elbow by a non-contact guided wave technique with laser source as a transmitter and air-bone transducer as a receiver, respectively. Wall thinning of carbon steel pipe is one of the most serious problems in nuclear industry; especially the one in carbon steel pipe elbow caused by FAC (Flow-Accelerated Corrosion). Therefore, development of a robust NDE technique for the pipe elbows is essential for safe operation of nuclear power plants. Specimens used in this study were carbon steel which is widely used in real nuclear power plants. The geometry of wall thinning was given as 120mm extent, 80mm-length and 5mm-depth. The L(0,1) and L(0,2) dominant modes group shows a promising variation in the ultrasound guided wave data analysis based on the response obtained by the laser generation/air-coupled detection system. The trends of these characteristics and subsequent signal processing were used to estimate the size and location of wall thinning.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Dooley, R. B., and Chexal, V.K.: Flow-accelerated corrosion of pressure vessels in fossil plants. International Journal of Pressure Vessels and Piping 77 85-90 (2000).
Demma, A., Cawley, P., Lowe, M., Roosenbrand, A. G., Pavlakovic, B.: The relection of guided waves form notches in pipes: a guide for interpreting corrosion measurements. NDT&E International 37 167-180 (2004).
Lowe, M. J. S., Alleyne, D. N., Cawely, P.: Defect detection in pipes using guided waves. Ultrasonics 36 147-154 (1996).
Jhang, K., Kim, H., Kim, H., and Ha, J.: Laser Generation of Focused Lamb Waves. Journal of the Korean Society for Nondestructive Testing 22 (6) 637-642 (2002).
Wright, W. M. D., Hutchins, D. A.: Air-coupled ultrasonic testing of metals using broadband pulses in through-transmission. Ultrasonic 37 19-22 (1999).
Alleyne, D. N., and Cawley, P.: The Interaction of Lamb Waves with Defect. IEEE Trans. Ultrason. Ferroelec. Freq. Contr. 39A(3) 381-397 (1992).
Kin, HM, Lee, TH and Jhang, KY.: Non-Contact Guided Wave Technique with Enhanced Mode-Selectivity. J Korean Soc NDT 26(6) 597-602 (2004).
Hutchins, David A., and William, M. D.: Wright and Gordon Hayward: Air-Coupled Piezoelectric Detection of Laser-Generated Ultrasound. IEEE Trans. Ultrason. Ferroelec. Freq. Contr. 41A(6) 796-805 (1994).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer Science+Business Media B.V.
About this paper
Cite this paper
Kim, DY., Lee, JH., Cho, Y., Lee, J., Achenbach, J.D. (2010). Evaluation of Corrosion in Carbon Steel Pipes by Laser-Generated Guided Wave. In: Wu, TT., Ma, CC. (eds) IUTAM Symposium on Recent Advances of Acoustic Waves in Solids. IUTAM Bookseries, vol 26. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9893-1_8
Download citation
DOI: https://doi.org/10.1007/978-90-481-9893-1_8
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-9892-4
Online ISBN: 978-90-481-9893-1
eBook Packages: EngineeringEngineering (R0)