The problem of diffusion of hydrogen in a weld of arbitrary shape has been solved by numerical means using the finite-element method. The rate of diffusion in an actual fillet weld has been analysed by this method and average concentrations and concentration contours have been derived as a function of time and linear dimensions. It is shown how these solutions can be used to derive a post-weld heat treatment that will enable either the average or spot hydrogen concentrations in a weld to be reduced to any chosen level.
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References
1.
ZIENKIEWICZO. C. and CHEUNGY. K.: ‘The finite-element method in structural and continuum mechanics’; 1967, London, McGraw-Hill.
2.
ZIENKIEWICZO. C. and CHEUNGY. K.: Engineer, Sept.1965, 507.
3.
WEXLERA.: Trans. Microwave Theory Tech., 1969, MT T-17, 416
4.
WILSONE. L. and NICKELLR. E.: Nucl. Eng. Design, 1966, 4, 276.
