Keywords Additives, Additive Interaction, Rolling Bearings, Ball Bearings, Wear, Rolling-Contact Fatigue, Wind Energy Plants, White Etching Cracks (WEC), Acoustic Emission, Barkhausen Noise
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.
Authors and Company/Institution Sören Barteldes and F. Walther, TU Dortmund University, Dortmund, Germany Walter Holweger, Schaeffler Technologies GmbH & Co. KG, Herzogenaurach, Germany