2003 Fiscal Year Final Research Report Summary
Machining Property of Hard Brittle Materials under High Hydrostatic Pressure
| Project/Area Number |
14550095
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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 |
機械工作・生産工学
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
YOSHINO Masahiko Tokyo Institute of Technology, Graduate School of Science and Engineering, Associate Professor, 大学院・理工学研究科, 助教授 (40201032)
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| Project Period (FY) |
2002 – 2003
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| Keywords | Hard brittle materials / Ultra precision machining / Damage free machining / High hydrostatic pressure / Machining defect / Ductile mode machining / Cutting force / Crack ratio |
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| Research Abstract |
This paper reports effects of external hydrostatic pressure on machining properties of hard-brittle materials. Experiments for this study utilized a specially designed machining device, and surface turning tests were conducted and machining force were measured with for (4) hard-brittle materials (i.e., silicon, soda glass, quartz glass and quartz) under pressure of 400 MPa and zero MPa. Traces of machining on these specimens were examined with microscopes to evaluate the effects of hydrostatic pressure on machining defects. The results of the experiments show that hydrostatic pressure is efficient to minimize machining defects and it causes increase of machining force. Cutting force was also measured on soda glass. Results indicated increase of cutting force and friction angle under high hydrostatic pressure.
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