2015 Fiscal Year Final Research Report
Elucidation and realization of laser planing technique based on 3D crack growth analysis
| Project/Area Number |
25420023
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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 |
Materials/Mechanics of materials
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| Research Institution | Nagasaki University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | き裂伝ぱ / ぜい性破壊 / レーザ加工 / 破壊じん性 |
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| Outline of Final Research Achievements |
A laser planing is one of the up-to-date processing technique for brittle materials like glass and ceramics. This technique removes the damaged skin to recover the original strength of the material. In the present study, to begin with, a simplified model for laser peeling is studied to understand the physical background.
For simplicity, a treated domain was modeled as a semi-infinite region with free edge. In this domain, a stability of crack propagation parallel to the free edge under the influence of quasi-static thermal stress due to moving point heat was discussed. It was found from numerical analysis that the tip of the propagating crack locates infinitesimally ahead of the heating point. In order to explain the differences between analysis and observation, further study is required.
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| Free Research Field |
機械材料・材料力学
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