2012 Fiscal Year Final Research Report
Development and Application of On-site X-ray Stress Measurement Device Contributing to Safety in Railway Technology
| Project/Area Number |
22560138
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | レール / 残留応 / 集合組織 / 疲労 / X線 / 回折 / 転動 / 接触応力 |
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| Research Abstract |
This research aimed at realization of a safe railroad. Since simultaneously with the information on a crystalline lattice, X-ray diffraction method can also enables us to evaluate residual stress, this research paid its attention to the X-ray diffraction method. The purpose of this research is to develop newly the compact apparatus for determining residual stress which can be used on-site. The other purposeof this research is to investe the actual condition of the damage in rails in service.As a result, it was found that the Debye ring from a rail was measurable in about 2 minutes by back reflection. It was also found that it became possible to observe visually a part of texture structure state developed in a rail by a plastic flow. Simultaneously, evaluation of residual stress was obtained from the Debye ring too.
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