COMBUSTION TURBINE (CT) HOT SECTION COATING LIFE MANAGEMENT

[摘要] 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.

[发布日期] 2002-12-02 [发布机构] Electric Power Research Institute, Inc. (United States)

[关键词] Eddy Currents;Temperature Distribution;Combustion Chambers;36 Materials Science;Protective Coatings