In situ neutron diffraction study of residual strain evolution around a non-uniform crack tip subjected to a tensile overload

This project focuses on the development of new numerical modelling techniques for fatigue crack growth and in particular, non-uniform crack front evolution and crack growth through complex, through-wall residual stress profiles. Ultimately, the aim of the combined numerical-experimental research programme is to improve guidance in existing codes and standards (e.g. R6 and BS7910) to reduce the potential over-conservatism of fracture mechanics and fitness-for-service assessments.