SYMPOSIA PAPER Published: 01 January 2003
STP11428S

Damage and Failure Mechanisms of Thermal Barrier Coatings under Thermomechanical Fatigue Loadings

Source

The mechanical behavior of thermal barrier coated (TBC) systems under the influence of combined thermal and mechanical cyclic loading has been studied using a prototype experimental configuration that simulates realistically the operational conditions within a gas turbine. This study has demonstrated that the failure mechanisms of TBC systems under thermomechanical fatigue (TMF) conditions depend on the range of applied mechanical strain and on the phase angle between thermal and mechanical loading. The results highlight the importance of proper design of TMF experiments so that the failure mechanisms activated and studied during the experiments are the mechanisms responsible for the failure of TBC systems under service conditions.

Author Information

Tzimas, E
Institute for Energy, ZG Petten, The Netherlands
Hähner, P
Institute for Energy, ZG Petten, The Netherlands
Moretto, P
Institute for Energy, ZG Petten, The Netherlands
Peteves, SD
Institute for Energy, ZG Petten, The Netherlands
Bressers, J
Institute for Energy, The Netherlands
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Details
Developed by Committee: E08
Pages: 83–97
DOI: 10.1520/STP11428S
ISBN-EB: 978-0-8031-5478-0
ISBN-13: 978-0-8031-3467-6