Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9707584 | International Journal of Pressure Vessels and Piping | 2005 | 7 Pages |
Abstract
The mesh dependency of the cavity growth model due to Rice and Tracey has been overcome by integrating it over a process zone surrounding the crack tip. This integral represents a modified damage potential. The critical value of the integral for crack initiation in weld material has been determined from a welded CT specimen by comparing the computed J with the experimentally measured J-initiation value. This critical value is then employed in 8 and 12Â in. welded pipes having different through-wall cracks at the centre to predict the crack initiation loads under four-point bending. Close agreement between the computed crack initiation loads and the experimentally measured values justifies the usefulness of the present modified damage potential.
Keywords
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
B.K. Dutta, Shekhar Saini, Navneet Arora,