Several mechanisms of wear can occur in rolling element bearings (REBs). As the wear evolves, the vibration level will increase with the growth of internal clearance of bearings due to the variation of contact force and dynamic excitation. Therefore, for accurate fault severity diagnosis, internal clearance increase caused by inevitable wear has to be taken into account. In this paper, clearance variation caused by the wear of tapered rolling bearings (TRBs) is investigated experimentally and clearance estimation is carried out based on analysis of low frequency vibrations and the deviation of the fault features. An experimental study is ingeniously designed to simulate the wear evolutions and evaluate their influence on well-accepted envelope signatures according to vibrations measured from TRBs. The defective bearings were diagnosed in two aspects: the magnitude variation of vibrations in the low frequency band and the peak frequency deviation. The experimental results give out a signature shift with regard to the wear evolution, also vibration magnitude of the low frequency band grew remarkably. Therefore, unavoidable wear can be estimated and consequently the fault severity diagnosis improved.
|Title of host publication||ICAC 2018 - 2018 24th IEEE International Conference on Automation and Computing|
|Subtitle of host publication||Improving Productivity through Automation and Computing|
|ISBN (Electronic)||9781862203426, 978-1-86220-341-9|
|Publication status||Published - 1 Jul 2019|
|Event||24th IEEE International Conference on Automation and Computing, ICAC 2018 - Newcastle upon Tyne, United Kingdom|
Duration: 6 Sep 2018 → 7 Sep 2018
|Name||ICAC 2018 - 2018 24th IEEE International Conference on Automation and Computing: Improving Productivity through Automation and Computing|
|Conference||24th IEEE International Conference on Automation and Computing, ICAC 2018|
|City||Newcastle upon Tyne|
|Period||6/09/18 → 7/09/18|
Bibliographical noteFunding: This research was financially supported by the National Natural Science Foundation of China (Grant no. 51605133; 51705127), Hebei Provincial International Science and Technology Cooperation Program of China (Grant no. 17394303D).
- Fault severity diagnosis
- Low frequency vibrations
- Tapered roller bearings
- Wear evolution