| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Outline of Final Research Achievements |
The present research investigated bearing diagnoses based on chaos time series analyses. First, rolling fatigue tests were conducted to measure vibration and sound generated by rolling bearings during their lifetime. Then, obtained data were analyzed with chaos time series analyses for the bearing diagnoses. In the diagnoses, the largest Lyapunov exponent analysis and the trajectory parallel measure method were used to identify the change of data. Also, conventional methods, such as skewness, kurtosis, crest factor, and frequency spectra, were calculated for the comparison of diagnosis results. Finally, the effectiveness of chaos time series analyses was confirmed in the bearing diagnoses.
|
