| Project/Area Number |
08555028
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Science University of Tokyo |
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Principal Investigator |
OKAMURA Hiroyuki Science University of Tokyo, Mechanical Engineering, Professor, 理工学部, 教授 (00010679)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥9,400,000 (Direct Cost: ¥9,400,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥8,500,000 (Direct Cost: ¥8,500,000)
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| Keywords | fracture surface / microscope / fractography / facet / dimple / 破壊力学 / フラクトグラフィー |
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| Research Abstract |
Microscopic observations of metal fracture surface have been developed as the fractography in order to investigate the micro-destruction mechanism. The aim of this paper is to execute the three-dimensional observation by using the Laser Microscope which has many advantages compared with the scanning electron microscope. A new scannlng apparatus installed on the moving stage of the microscope was improved to get the three-dimensional quantitative information on the fracture surface. The computer Program is also developed to study the quantitative relationship between three-dimensional parameters of the fracture surfaces and destructive phenomenon. It is useful to understand the three-dimensional shapes of fracture on the computer display. As the results, it becomes possible not only to measure the facet size and averaged depth of the fracture surface, but also to analyze the quantitative three-dimensional analysis of dimple depth. This system leads to propose the three-dimensional fractography to analyze the metal fracture surface.
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