The application of fracture mechanics to boiler drum/nozzle joints |
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| Authors: | P.J. Worthington P.T. Heald |
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| Affiliation: | Materials Division, Central Electricity Research Laboratories, Leatherhead, Surrey, Great Britain |
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| Abstract: | Recent treatments of post yield fracture mechanics and fatigue crack growth laws are applied to a situation typical of a boiler drum/nozzle joint. Critical defect sizes are calculated for boiler plate material and the weld metals. It is shown that these defect sizes are less than those obtained using linear elastic fracture mechanics (LEFM), and that the amount of crack growth is larger than previously obtained. |
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