2016 Fiscal Year Final Research Report
Confirmatory experiments on enhancement of fatigue lives for development of portable laser-peening system
| Project/Area Number |
26420468
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Kindai University |
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Principal Investigator |
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| Research Collaborator |
SANO Yuji
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | レーザピーニング / 疲労 / 残留応力 / 低出力 / 携帯 / 現場 / ショットピーニング / ハンマーピーニング |
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| Outline of Final Research Achievements |
Laser peening can introduce compressive residual stress to the surface and, therefore, is effective in enhancing the fatigue strength. This study targets confirmation of enhancing fatigue lives due to laser-peening with low pulse energy in order to develop portable laser-peening system. As a result, laser-peening condition with low pulse energy was selected, and effects of the laser-peening were confirmed by residual stress measurements and fatigue experiment with large scale specimen. Moreover, the results were compared with that of other types of peening. Numerical analysis models of laser-peening were also studied.
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| Free Research Field |
鋼構造，溶接構造，破壊実験
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