Influence of heat input and preheating on residual stresses in pipe weld

Alhafadhi, Mahmood and Alsigar, Masar and Zahraa A., Oudah and Bézi, Zoltán and Sahm, Alden abd alal and Reddy, P. Ravinder (2024) Influence of heat input and preheating on residual stresses in pipe weld. POLLACK PERIODICA : AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES, 19 (2). pp. 42-47. ISSN 1788-1994 (print); 1788-3911 (online)

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Abstract

Using finite element methods, residual stresses were estimated in pipe welds. Experiments were also conducted to verify the numerical results. An alternative to a three-dimensional model was used to simplify the numerical calculation for residual stresses investigation. Model predictions were validated by measuring residual stresses using X-ray diffraction. As compared to measured residual stress distributions, the computational approaches developed in this study can accurately predict welding residual stress distributions. The focused welding parameters have a significant impact on residual stresses even when all the other parameters are the same.

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