Development of Experimental Techniques and Predictive Tools to Characterise Thermo-Mechanical Fatigue Behaviour and Damage Mechanisms.

The project aims at (i) improvement and development of advanced standard and non-standard TMF experimental methods including harmonisation of the test methods to enable standardisation across the field by performing comprehensive studies into the phenomena for a range of representative component feature cycles, (ii) advanced metallurgical assessment of two structural disc alloys taking into account the effect of multiple critical variables (e.g. R-ratio, phase, environment, dwell) to determine active damage mechanisms that control the life under TMF operating conditions, and (iii) evaluation and development of physically based coupled models, with experimental validation, capable of predicting TMF initiation and propagation lives of components subjected to complex engine cycles and suitable for implementation in the computer programmes used to predict component lives.

Partners: Rolls Royce, Swansea University, UK and The University of Nothingham, UK.
Financing: EU-project, CleanSky2

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