Open AccessCombustion Turbine (CT) Hot Section Coating Life Management
Author(s) -
S Cheruvu,
K Krzywosz
Publication year - 2005
Language(s) - English
Resource type - Reports
DOI - 10.2172/897810
Subject(s) - task (project management) , reliability (semiconductor) , combustion , coating , computer science , field (mathematics) , stress (linguistics) , process engineering , environmental science , reliability engineering , mechanical engineering , forensic engineering , engineering , materials science , systems engineering , composite material , chemistry , mathematics , physics , linguistics , organic chemistry , philosophy , quantum mechanics , pure mathematics , power (physics)
The integrity of coatings used in hot section components of combustion turbines is crucial to the reliability of the buckets. This project was initiated in recognition of the need for predicting the life of coatings analytically, and non-destructively; correspondingly, four principal tasks were established. Task 1, with the objective of analytically developing stress, strain and temperature distributions in the bucket and thereby predicting thermal fatigue (TMF) damage for various operating conditions; Task 2 with the objective of developing eddy current techniques to measure both TMF damage and general degradation of coatings and, Task 3 with the objective of developing mechanism based algorithms. Task 4 is aimed at verifying analytical predictions from Task 1 and the NDE predictions from Task 3 against field observations