Non-Newtonian fluid based contactless sub-aperture polishing

Wu Le Zhu; Anthony Beaucamp

doi:10.1016/j.cirp.2020.04.093

Non-Newtonian fluid based contactless sub-aperture polishing

Wu Le Zhu, Anthony Beaucamp

Research output: Contribution to journal › Article › peer-review

Abstract

Compliant polishing (e.g. bonnet polishing) is widely used to finish freeform surfaces. However, direct pad/surface contact often causes scratches or embedding of abrasives, especially on metal moulds. Here, the use of non-Newtonian fluid (polymer and starch) to enable contactless polishing without need for a polishing pad is reported. Modelling and analysis are conducted to reveal the influence of fluid rheology on the material removal mechanism. Using #6000 grit alumina, Gaussian shaped removal footprints can be obtained, with a completely scratch-free roughness of 3.9 nm Ra on Nickel, in contrast with 70.3 nm Ra obtained by general water based bonnet polishing.

Original language	English
Pages (from-to)	293-296
Number of pages	4
Journal	CIRP Annals
Volume	69
Issue number	1
DOIs	https://doi.org/10.1016/j.cirp.2020.04.093
Publication status	Published - 2020
Externally published	Yes

Keywords

Non-Newtonian fluid
Polishing
Ultra precision

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cirp.2020.04.093

Cite this

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title = "Non-Newtonian fluid based contactless sub-aperture polishing",

abstract = "Compliant polishing (e.g. bonnet polishing) is widely used to finish freeform surfaces. However, direct pad/surface contact often causes scratches or embedding of abrasives, especially on metal moulds. Here, the use of non-Newtonian fluid (polymer and starch) to enable contactless polishing without need for a polishing pad is reported. Modelling and analysis are conducted to reveal the influence of fluid rheology on the material removal mechanism. Using #6000 grit alumina, Gaussian shaped removal footprints can be obtained, with a completely scratch-free roughness of 3.9 nm Ra on Nickel, in contrast with 70.3 nm Ra obtained by general water based bonnet polishing.",

keywords = "Non-Newtonian fluid, Polishing, Ultra precision",

author = "Zhu, {Wu Le} and Anthony Beaucamp",

note = "Funding Information: This work was supported by the Grant-in-Aid for Scientific Research no. 17K14571 from the Japan Society for Promotion of Science . The authors acknowledge Zeeko Ltd. for loaning the polishing system, and technical support from Mr. Yanjun Han. Publisher Copyright: {\textcopyright} 2020 CIRP",

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doi = "10.1016/j.cirp.2020.04.093",

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AU - Zhu, Wu Le

AU - Beaucamp, Anthony

N1 - Funding Information: This work was supported by the Grant-in-Aid for Scientific Research no. 17K14571 from the Japan Society for Promotion of Science . The authors acknowledge Zeeko Ltd. for loaning the polishing system, and technical support from Mr. Yanjun Han. Publisher Copyright: © 2020 CIRP

PY - 2020

Y1 - 2020

N2 - Compliant polishing (e.g. bonnet polishing) is widely used to finish freeform surfaces. However, direct pad/surface contact often causes scratches or embedding of abrasives, especially on metal moulds. Here, the use of non-Newtonian fluid (polymer and starch) to enable contactless polishing without need for a polishing pad is reported. Modelling and analysis are conducted to reveal the influence of fluid rheology on the material removal mechanism. Using #6000 grit alumina, Gaussian shaped removal footprints can be obtained, with a completely scratch-free roughness of 3.9 nm Ra on Nickel, in contrast with 70.3 nm Ra obtained by general water based bonnet polishing.

AB - Compliant polishing (e.g. bonnet polishing) is widely used to finish freeform surfaces. However, direct pad/surface contact often causes scratches or embedding of abrasives, especially on metal moulds. Here, the use of non-Newtonian fluid (polymer and starch) to enable contactless polishing without need for a polishing pad is reported. Modelling and analysis are conducted to reveal the influence of fluid rheology on the material removal mechanism. Using #6000 grit alumina, Gaussian shaped removal footprints can be obtained, with a completely scratch-free roughness of 3.9 nm Ra on Nickel, in contrast with 70.3 nm Ra obtained by general water based bonnet polishing.

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Non-Newtonian fluid based contactless sub-aperture polishing

Abstract

Keywords

ASJC Scopus subject areas

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