| Project/Area Number |
20K14625
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 18020:Manufacturing and production engineering-related
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| Research Institution | Kyoto University |
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Principal Investigator |
ZHU Wule 京都大学, 工学研究科, 特定助教 (30867528)
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| Project Period (FY) |
2020-04-01 – 2021-03-31
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| Project Status |
Discontinued (Fiscal Year 2020)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | Polishing / Ultra precision / Non-Newtonian fluid / polishing / non-newtonian fluid / ultra-precision / freeform surface |
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| Outline of Research at the Start |
This research will disclose the fluid rheology behavior with scientific insights into its shearing mechanism in removing materials. We will verify the benefits of non-Newtonian fluid for considerable performance promotion and opens up a new class of non-contact sub-aperture polishing method.
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| Outline of Annual Research Achievements |
In this study, a new non-Newtonian sub-aperture polishing process was proposed to enable deterministic polishing of super smooth surfaces in contactless mode. Modelling and simulation were conducted and showed strong correlation between principal stress and removal rate. Experiments and comparisons demonstrated the distinctive performances of the new method with compound slurry (starch and polymer mixed), in obtaining scratch-free surface with optical quality.Scratch free surface is obtained using the new method compared to the generic bonnet polishing. Finally, sub-aperture polishing of a freeform bi-sinusoidal surface was achieved.
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