Residual Stress Evolution and Acoustic Emission During Lubrication-Assisted White Etching Crack (WEC) Formation
The root cause of White Etching Crack (WEC) formation dominant in
SAE 52100 and SAE 4320 bearing steel is unknown by now. Despite the ongoing
debate, there is a great interest to detect WEC in an early state of formation
in order to install predictive and reactive maintenance, particularly for remote
locations, e.g. offshore wind energy plants. Magnetic Barkhausen noise (MBN) and
high-frequency impulse measurements (HFIM) show a great potential to detect WEC
at an early state.