Browse > Article
http://dx.doi.org/10.5781/KWJS.2012.30.6.522

A Technique for Defect Detection of Condenser Tube in Support Plate Region using Guided Wave  

Kim, Yong-Kwon (Dept. of Mechanical and Automotive Engineering, Seoul National Univ. of Science & Technology)
Park, Ik-Keun (Dept. of Mechanical and Automotive Engineering, Seoul National Univ. of Science & Technology)
Park, Sae-Jun (Non-Destructive Examination Dept., Doosan Heavy Industries & Construction)
Ahn, Yeon-Shik (KEPCO Research Institute)
Gil, Doo-Song (KEPCO Research Institute)
Publication Information
Journal of Welding and Joining / v.30, no.6, 2012 , pp. 36-41 More about this Journal
Abstract
General condensers consist of many tubes supported by tube sheets and support plates to prevent the deflection of the condenser tubes. When a fluid at high pressure and temperature runs over the tubes for the purpose of transferring heat from one medium to another, the tubes vibrate and their surface comes into contact with the support plates. This vibration causes damage to the tubes, such as cracks and wear. We propose an ultrasonic guided wave technique to detect the above problems in the support plate region. In the proposed method, the ultrasonic guided wave mode, L(0,1), is excited using an internal transducer probe from a single position at the end of the tube. In this paper, we present a preliminary experimental verification using a super stainless tube and show that the defects can be discriminated from the support signals in the support region.
Keywords
Ultrasonic guided-wave; Condenser tube; Support plate region; Internal transducer probe;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Y.G. Shin and Y.T. Lee : Prediction of bobbin eddy current signals from various anomalous defects in the heat exchanger tube, KSNT/FC0035, (2004), 239-248
2 J.L. Rose, D. Jiao and J. Spanner, Jr. : Ultrasonic Guided wave NDE for Piping, Materials Evaluation, 51-5 (1996), 1310-1313
3 H.J. Shin, J.L. Rose and S.J. Song : Inspection of Heat Exchanger Tubing Detects with Ultrasonic Guided Waves, Journal of the KSNT, 20-1 (2000), 1-9
4 T. Nagai, M. Hyodo and K. Takamura : Guided Ultrasonic Testing as a Practical Technology, Journal of the Japanese Society for Non-Destructive Inspection, 52-12 (2003), 667-671
5 S. Kameyama, K. Misu, S. Wadaka, Y. Tanaka, M. Koike and S. Suchiro : Ultrasonic Test Instrument Using Guided Wave, Journal of the JSNDI, 52-12 (2003), 672-678
6 D.S. Gil, Y.S. Ahn, S.K. Park, I.K. Park and Y.K. Kim : Defect Evaluation of Carbon Steel Weld Part using Guided Wave, KWJS 2009-Spring, 123
7 Y.K. Kim, I.K. Park, H.M. Kim, W.J. Song, Y.S. Cho, Y.S. Ahn and T. Hayashi : Pipe Inspection of Weldments using Long Range Ultrasonic Guided Wave Techniques, KWJS 2005-Spring, 191-193   과학기술학회마을
8 I.K. Park, Y.K. Kim, H.M. Kim, W.J. Song, Y.S. Cho and Y.S. Ahn : Long Range Ultrasonic Guided Wave Techniques for Inspection of Pipes, Journal of the KWS, 23-5 (2005), 43-48 (in Korean)   과학기술학회마을
9 I.K. Park, Y.K. Kim, S.J Park, Y.S. Ahn and D.S. Gil : Application of Ultrasonic Guided Wave to Heat Exchanger Tubes Inspection, WCNDT (2008)
10 I.K. Park, Y.K. Kim, S.J. Park, Y.S. Cho and D.S. Gil : Defect detection of Exchanger Tube using internal guided wave probe, KSNT/SC0039, (2008), 120-124
11 D.C. Gazis : Three-Dimensional Investigation of the Propagation of Waves in Hollow Circular Cylinders. I. Analytical Foundation, J. Acous. Soc. Am, 31-5 (1959), 568-573   DOI