Journal
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
Volume 22, Issue 5, Pages 381-388Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13621718.2016.1251079
Keywords
Welding; buckling; distortion; measurement; heat; strain
Funding
- National Natural Science Foundation of China [51421004]
- Fundamental Research Funds for the Central Universities
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An experimental method based on digital image correlation technology is proposed to measure welding buckling distortion for bead-on-plane with tungsten inert gas welding. This study focuses on the effect of welding heat input for dynamic buckling and full-field distribution. The experimental results demonstrate that heat input has a great influence on welding buckling distortion. The longitudinal shrinkage of the weld bead is in direct proportion to the heat input. In the weld bead, the longitudinal plastic strain is small, while the transverse strain is large. The key points on the line, that is perpendicular to the bisector of the weld bead, experience a distorted trend of positive increase, constant displacement, negative increase and stable displacement, although the heat inputs are different.
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