Coupling Singular Spectral and Envelope Analysis for Localised Bearing Defect Detection
|I. MpiaBolombanza, G.EkuluNdiakama, M.AvociUgwiri, B.Kilundu|
- In many industrial situations, bearing failure can lead to serious consequence on the overall process. A bearing’s fault progressive character raises the question of ﬁnding the right moment to perform replacement at the cost of stopping the machine. The study done in this paper deals with mathe- matical modeling of the bearing’s rolling element with a local defect on its ﬁxed outer ring, based on a mass-spring-damper archetype system. A simulation of the vibratory behavior is performed, and its impact on ball-defect coincidences during shaft rotation under different working conditions is analyzed. The paper suggests applying advanced pre-processing tech- niques such as Singular Spectrum Analysis (SSA) and Envelope Analysis (EA) before extracting statistical indicators. Some well- known time-domain indicators such as the Root Mean Square (RMS), kurtosis, and Energy around Ball Pass Frequency Outer- ring (EBPFO) are used on the raw and processed signals to highlight the defect evolution. The results carried out show that, applying the EA with SSA on the raw time-series signal at the pre-processing level, before statistical analysis can signiﬁcantly improve the detection, thus an excellent diagnosis to incipient defects in bearings.
- failure; modelling; vibration analysis; indicator; detection; diagnosis
- Event details
- IMEKO TC:
- Event name:
- TC10 Conference 2022
18th IMEKO TC10 Conference "Measurement for Diagnostics, Optimisation and Control to Support Sustainability and Resilience"
- Warsaw, POLAND
- 26 September 2022 - 27 September 2022