Report on appropriate knock down factors for environment effects

Task T43 Evaluation of fatigue performance under complex loading and thermal cycles ESR1 ESR4 The baseline behaviour at room temperature will be further compared to effects of more complex combinations of loading and temperature histories to assess changes in fatigue initiation and propagation behaviour in AM microstructures The effect of environment eg salt deposits and moisture on initiation and growth will also be evaluated to incorporate these effects in materials models used in subsequent lifing predictions