COMBUSTION TURBINE (CT) HOT SECTION COATING LIFE MANAGEMENT

Viswanathan, R. ; Krzywosz, K. ; Cheruvu, S. ; Wan, E.

National Energy Technology Laboratory (U.S.)

关键词: Temperature Distribution;    36 Materials Science;    Service Life;    Thermal Fatigue;    42 Engineering;   

DOI  :  10.2172/803736
RP-ID  :  FC26-01NT41231--01
RP-ID  :  FC26-01NT41231
RP-ID  :  803736

美国|英语

来源: UNT Digital Library

【 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.