| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2010: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
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| Research Abstract |
Ceramics are expected as high performance bearings. So investigation of the rolling contact fatigue strength is crucially important. To evaluate the effects of the shot peening and crack-healing on the rolling contact fatigue strength, rolling contact fatigue tests were carried out on Si3N4 and Al2O3/SiC composite. For Si3N4 ceramics, the rolling contact fatigue strength was improved by shot peening. For Al2O3/SiC composite the rolling contact fatigue strength increased by combination of shot peening and crack-healing.
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