1st ICAI 2020

International Conference on Automotive Industry 2020

Mladá Boleslav, Czech Republic

The signal analysis allowing to monitor the state of lubrication film in the bearing could be based on observation of following signal-features: changes of extremes of the signal or observation of variance of the signal. In (Chmelar, 2020) also other features such as shape of statistical distribution of the signal are described as possible features allowing detection of lubrication film. 4. Conclusion A successful development of SAW-based method for observation of lubricating film in rolling elements was presented in this paper. It leverages available system for bearing lubrication monitoring BeMoS One and adds an experimentally verified approach of signal analysis which is based on interpretation of physical behaviour of data. Acknowledgements The doctoral academic research was supported by the Grant Agency of the Czech Technical University in Prague, grant No. SGS SGS18/127/OHK2/2T/12. References [1] Chmelar, J. et al., (2019a). Cylindrical Roller Bearing Lubrication Regimes Analysis At Low Speed And Pure Radial Load. Acta Polytechnica , 59(3), pp. 272-282 [2] Chmelar, J et al., (2019b). Bearing Test Rig: Setting up and Lesson Learned in Lecture Notes in Mechanical Engineering : Proceedings of the ICMD 2018 . pp. 67-77. [3] Chmelar, J. et al., (2020). Experimental study of lubrication film monitoring in a roller bearing by utilization of surface acoustic waves. Tribology International , 141, p. 105908. [4] Lindner, G. et al., (2010). On-line surveillance of lubricants in bearings by means of surface acoustic waves. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control , 57(1), pp. 126-132. [5] Lineham J. (2008). Ultrasonic probes for inspecting bearings. World of Pumps , vol. 2008, iss. 503, pp. 34-36. [6] Schaeffler Technologies (2010). Rolling Bearing Damage. Recognition of damage and bearing inspection . PUB. WL 82 102/3 EA [7] Venner, CH (1991), Multilevel solution of the EHL line and point contact problems , Enschede. [8] Worden, K., 2001. Rayleigh and Lamb Waves – Basic Principles. Strain , 37(4), pp. 167-172.

139