An NDE System for the Detection of Early Damage in High-Temperature Rotors
The assessment and extension of the life of fossil power plants is now a matter of prime importance for the electricity industry.1 Consequently, in recent years, advances in life prediction methods, especially for high-temperature components, have become a frequent, and closely followed, topic at materials-related conferences. One of the conclusions obtained from research work to date on material degradation and damage in long-service components is that the development of non-destructive examination techniques to detect early damage, that is, damage before crack initiation, is urgently needed. Crack initiation life, as compared with crack propagation life, has the advantage of making it possible to formulate a life extension program with more options.
KeywordsCreep Damage Creep Specimen Plastic Strain Range Hardness Change Eddy Current Testing
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