IN-SITU NEUTRON IMAGING AND MODELING OF HYDROGEN EMBRITTLEMENT IN HIGH STRENGTH STEELS

A new experimental method to investigate hydrogen assisted cracking is presented in this paper. By combining electrochemical pre-charging, fracture mechanics and neutron imaging it is possible to get large experimental data which can give insight into the local fracture process zone. Furthermore, it can be used to calibrate FEM-models which considers crack propagation, embrittlement, and H diffusion from a moving stress field.
EXTENDED ABSTRACT