| Project/Area Number |
25420713
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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 |
Inorganic materials/Physical properties
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| Research Institution | The University of Shiga Prefecture |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | インデンテーション / ガラス / 弾性 / 塑性 / クラック / 脆さ / 破壊 / 変形 |
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| Outline of Final Research Achievements |
The indentation microscope with high resolution was prepared in order to observe deformation behavior of glass during indenation. Using this set-up, the indentation load, the indentation depth, the contact area, and the sinking-in depth were successfully determined during the loading-unloading indentation cycle. It is found that indentation response of glass depends on the ratio of hardness to modulus, and that the blunter indenter results in the more elastic response of glass under the indenter. This new finding enables us to explain a relationship between deformation behavior of glass under an indenter and cracking behavior of the glass during and/or after the indentation.
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