Nickel-based austenitic weldments are widely used in steam generator, however it’s difficult for inspection because of its inhomogeneous and anisotropic elastic behaviors. The anisotropic and heterogeneous characteristics of austenitic welds together with a coarse-grained structure (elongated and oriented grains) lead to the following phenomena: scattering, attenuation, skewing, splitting, and divergence of the ultrasonic beam. To improve the ultrasonic inspection, beam behavior in weld need to be understood theoretically and experimentally. For that purpose, water immersed C-scans have been performed with respect to different parts (base material, austenite weld) of the weldments using one 5MHz transducer as transmitter at one side of the specimen and one 5MHz pinducer on the other side as receiver. Beam skewing and splitting is observed, 2D FFT are performed to obtain scan image in frequency domain and echodynamic curve is extracted from the C-scan data. The experiments results are also compared with the simulation results using multi-Gaussian beam model.
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ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
July 18–22, 2010
Bellevue, Washington, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4924-8
PROCEEDINGS PAPER
Study on Ultrasonic Beam Behavior in Nickel-Based Austenitic Weldments
Hak-Joon Kim,
Hak-Joon Kim
Sungkyunkwan University, Suwon, Korea
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Sung-Jin Song,
Sung-Jin Song
Sungkyunkwan University, Suwon, Korea
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Sung-Sik Kang,
Sung-Sik Kang
Korea Institute of Nuclear Safety, Daejeon, Korea
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Kyungcho Kim,
Kyungcho Kim
Korea Institute of Nuclear Safety, Daejeon, Korea
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Hae-Dong Chung,
Hae-Dong Chung
Korea Institute of Nuclear Safety, Daejeon, Korea
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Myung Ho Song
Myung Ho Song
Korea Institute of Nuclear Safety, Daejeon, Korea
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Jing Ye
Sungkyunkwan University, Suwon, Korea
Hak-Joon Kim
Sungkyunkwan University, Suwon, Korea
Sung-Jin Song
Sungkyunkwan University, Suwon, Korea
Sung-Sik Kang
Korea Institute of Nuclear Safety, Daejeon, Korea
Kyungcho Kim
Korea Institute of Nuclear Safety, Daejeon, Korea
Hae-Dong Chung
Korea Institute of Nuclear Safety, Daejeon, Korea
Myung Ho Song
Korea Institute of Nuclear Safety, Daejeon, Korea
Paper No:
PVP2010-25567, pp. 241-246; 6 pages
Published Online:
January 10, 2011
Citation
Ye, J, Kim, H, Song, S, Kang, S, Kim, K, Chung, H, & Song, MH. "Study on Ultrasonic Beam Behavior in Nickel-Based Austenitic Weldments." Proceedings of the ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASME 2010 Pressure Vessels and Piping Conference: Volume 5. Bellevue, Washington, USA. July 18–22, 2010. pp. 241-246. ASME. https://doi.org/10.1115/PVP2010-25567
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