Abstract
In recent years, acoustic emission (AE) sensors and AE-based techniques have been developed and tested for gearbox fault diagnosis. In general, AE-based techniques require much higher sampling rates than vibration analysis-based techniques for gearbox fault diagnosis. Therefore, it is questionable whether an AE-based technique would give a better or at least the same performance as the vibration analysis-based techniques using the same sampling rate. To answer the question, this paper presents a comparative study for gearbox tooth damage level diagnostics using AE and vibration measurements, the first known attempt to compare the gearbox fault diagnostic performance of AE- and vibration analysis-based approaches using the same sampling rate. Partial tooth cut faults are seeded in a gearbox test rig and experimentally tested in a laboratory. Results have shown that the AE-based approach has the potential to differentiate gear tooth damage levels in comparison with the vibration-based approach. While vibration signals are easily affected by mechanical resonance, the AE signals show more stable performance.
Original language | English (US) |
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Pages (from-to) | 1372-1393 |
Number of pages | 22 |
Journal | Sensors (Switzerland) |
Volume | 14 |
Issue number | 1 |
DOIs | |
State | Published - Jan 14 2014 |
Externally published | Yes |
Keywords
- Acoustic emission sensor
- Diagnostics
- Gearbox faults
- Vibration sensor