This research aims to investigate the relationship between the metal magnetic memory (MMM) signals of Q345 welded steel and its mechanical characteristics including the range of stress concentration zone and the tensile stress. A series of tensile experiments were carried out to measure the tangential residual magnetic field (RMF) on the surface of Q345 steel welded specimens under the action of stress. The variation of tangential RMF and the characteristic parameters (the peak-peak width and the peak-peak amplitude) of tangential RMF gradient curve were investigated. It was found that the tangential magnetic field curve of welded specimen has abnormal magnetic changes in the weld joint area. An analysis of the tangential RMF gradient curve shows that the range of stress concentration zone of welded specimen can be evaluated by the peak-peak width which is nearly constant under different tensile stress. Furthermore, the peak-peak amplitude of the tangential RMF gradient curve has quartic polynomial relationship with tensile stress and it is a potentially useful indictor of the tensile stress in welded steel.
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ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
June 25–30, 2017
Trondheim, Norway
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5768-7
PROCEEDINGS PAPER
Property Evaluation of Q345 Welded Steel by Tangential Residual Magnetic Field Available to Purchase
Shuzhuang Bai,
Shuzhuang Bai
Zhejiang University, Hangzhou, China
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Ashri Mustapha,
Ashri Mustapha
Petronas, Kuala Lumpur, Malaysia
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Huangjie Lou,
Huangjie Lou
Zhejiang University, Hangzhou, China
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Meili Fu
Meili Fu
Zhejiang University, Hangzhou, China
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Sheng Bao
Zhejiang University, Hangzhou, China
Shuzhuang Bai
Zhejiang University, Hangzhou, China
Ashri Mustapha
Petronas, Kuala Lumpur, Malaysia
Huangjie Lou
Zhejiang University, Hangzhou, China
Meili Fu
Zhejiang University, Hangzhou, China
Paper No:
OMAE2017-62169, V004T03A038; 6 pages
Published Online:
September 25, 2017
Citation
Bao, S, Bai, S, Mustapha, A, Lou, H, & Fu, M. "Property Evaluation of Q345 Welded Steel by Tangential Residual Magnetic Field." Proceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. Volume 4: Materials Technology. Trondheim, Norway. June 25–30, 2017. V004T03A038. ASME. https://doi.org/10.1115/OMAE2017-62169
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