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Study on Evaluation of AE Signals at Weld Region of SA 516 Steel

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Abstract:

The purpose of this study is to find out the method to detect AE signals at around the notch tip and to evaluate the AE signal characteristics for the basemetal, PWHT(post weld heat treatment) and weldment specimens of SA-516 steel during bend test. AE signals were produced in the process of plastic deformation. AE signal strength and amplitude of the weldment was the strongest, followed by PWHT specimen and basemetal. More AE signals were produced from the weldment because of the oxides, and discontinuous mechanical properties. The stronger AE signal strength, amplitude and more AE event counts for the weldment were shown.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

1729-1732

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.1729

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Online since:

October 2006

Authors:

Na Eui Gyun, Kim Hoon, Kanji Ono

Keywords:

Acoustic Emission (AE) Signal, Amplitude, Basemetal, Events, Notch Tip, Plastic Deformation, PWHT, Signal Strength, Weldment

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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