No.1001E 2006First Edition Prediction of Residual Fatigue Life of Bearings Part 3: Application of Leaky Rayleigh Wave |
| Category | TECHNICAL PAPER |
|---|---|
| Author | M. KIJI Electronic Systems R&D Department, Research & Development Center N. OGUMA Electronic Systems R&D Department, Research & Development Center, PhD |
| Abstract | The purpose of this study is to analyze the fatigue rate of bearings by a non-destructive procedure. In the previous studies, the authors proposed an X-ray diffraction method and a horizontally polarized surface shear wave method. However, hardened ball bearings were not considered. In this paper, a leaky Rayleigh wave (LR wave) method has been discussed. An ultrasonic transducer has been developed, which can generate LR waves propagating in the subsurface of inner raceways. An LR wave velocity measurement system has been constructed with this transducer. High accuracy data within ±0.37m/s standard deviation has been obtained. A relationship between the fatigue rate and the LR wave velocity has been established. From the experimental results, it can be concluded that the fatigue rate of ball bearings can be predicted by the LR wave velocity. |
| Keyword | rolling bearing, fatigue rate, nondestructive evaluation, ultrasonic transducer, leaky Rayleigh wave |
| Reference | N. OGUMA: Prediction of Residual Fatigue Life of Bearings -Part 1: Application of X-Ray Diffraction Method-, Koyo Engineering Journal, No.161E (2002) 25.
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