Non-destructive determination of residual stress state in steel weldments by Magnetic Barkhausen Noise technique |
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| Authors: | H. Ilker Yelbay, Ibrahim Cam,C. Hakan Gü r, |
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| Affiliation: | aWelding Technology and Non-Destructive Testing Research/Application Center, METU, Ankara, Turkey;bCentral Laboratory, METU, Ankara, Turkey;cMetallurgical and Materials Engineering Department, Middle East Technical University, Inonu Bulv, 06531 Ankara, Turkey |
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| Abstract: | The purpose of this study is non-destructive determination of residual stresses in the welded steel plates by Magnetic Barkhausen Noise (MBN) technique. A MBN-stress calibration set-up and a residual stress measurement system with scanning ability were developed. To control the accuracy and the effectiveness of the developed system and procedure, various MBN measurements were carried out. The MBN results were verified by the hole-drilling method. Microstructural investigation and hardness measurements were also conducted. It was concluded that if the calibration procedure including the effect of microstructure is appropriate then MBN is a very promising method for non-destructive, fast and accurate prediction of residual stresses in the welded plates. |
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| Keywords: | Welding Residual stress Non-destructive evaluation Magnetic Barkhausen Noise |
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