Use of Tach from Vibration to Estimate Bearing Spall Length

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Published Nov 5, 2024
Eric Bechhoefer Omri Matania Jacob Bortman

Abstract

Vibration analysis is often used for bearing fault diagnostics. Envelope analysis or other cyclo-stationary processes can capture a fault feature or condition indicator that is correlated to the spall length. However, no study has defined a process for estimating spall length on real-world data. The problem is that the spall length is a time-domain property of the signal. This paper generates a synthetic tachometer signal from the fault itself. It is synchronous to the rolling element exit from the spall, allowing for a time-domain representation of waveform using the time synchronous average. From this, an estimate of the length of the bearing fault can be determined.

How to Cite

Bechhoefer, E., Matania, O., & Bortman, J. (2024). Use of Tach from Vibration to Estimate Bearing Spall Length. Annual Conference of the PHM Society, 16(1). https://doi.org/10.36001/phmconf.2024.v16i1.3928
Abstract 81 | PDF Downloads 68

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Keywords

Envelope Analysis, Tachless Time Synchronous Average, Spall Estimation

References
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Section
Technical Research Papers

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