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Durability validation based on continual fracture mechanics for elements of power equipment constructions
This paper deals with durability validation based on continual fracture mechanics for elements of power equipment constructions. Approaches of durability indexes (g-percentile and mean life) validation subject to random spread of operating conditions are proposed. Generalized mathematical formulatio...
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| Format: | Article |
| Language: | Russian |
| Published: |
Journal of Mechanical Engineering
2016
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| Subjects: | |
| Online Access: | https://journals.uran.ua/jme/article/view/67488 |
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| Summary: | This paper deals with durability validation based on continual fracture mechanics for elements of power equipment constructions. Approaches of durability indexes (g-percentile and mean life) validation subject to random spread of operating conditions are proposed. Generalized mathematical formulation and numerical solution by Galerkin–Bubnov method of continual fracture mechanics which is necessary for durability indexes validation are presented. Validation of durabilityindexes of steam boilers superheaters heat exchanger tubes subject to high-temperature creep and stress corrosion cracking is shown as illustration of proposed generalized approaches. It is established that mean life validation reduce to overestimate and g-percentile life is more overall estimate |
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