Open AccessCOMBUSTION TURBINE (CT) HOT SECTION COATING LIFE MANAGEMENT
Author(s) -
R. Viswanathan,
David Gandy,
K. Krzywosz,
S. Cheruvu,
E. Wan
Publication year - 2002
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/812125
Subject(s) - task (project management) , reliability (semiconductor) , combustion , computer science , coating , field (mathematics) , turbine , reliability engineering , stress (linguistics) , mechanical engineering , process engineering , environmental science , engineering , systems engineering , materials science , chemistry , composite material , power (physics) , physics , mathematics , organic chemistry , quantum mechanics , pure mathematics , linguistics , philosophy
The integrity of coatings used in hot section components of combustion turbine 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, three 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. This report is a record of the progress to date on these 3 key tasks. Two supporting tasks relating to field validation (Task 4) and economic analysis (Task 5) have not yet been initiated
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