Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Outline of Final Research Achievements |
Rolling contact fatigue on the surface of rails due to railway wheel was sutudied using X-ray stress measurement method. Tri-axial stress analysis was conducted with a new stress analysis theory, so-called cosa method by detecting Debye-Scherrer ring with a two-dimensional X-ray detector and CrKa characteristic X-ray from irradiated area. As a result, it was found that tri-axial stress components corresponds to the initial damage of the rail and we can evaluate them nondestructively.
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