TY - JOUR
T1 - Active friction control in lubrication condition using novel metal morphing surface
AU - Murashima, Motoyuki
AU - Imaizumi, Yusuke
AU - Murase, Ryo
AU - Umehara, Noritsugu
AU - Tokoroyama, Takayuki
AU - Saito, Toshiyuki
AU - Takeshima, Masayuki
N1 - Funding Information:
Special thanks are due to Dr. Kazuyuki Yagi of the Department of Mechanical Engineering of Kyushu University for his professional advice on EHL theory. The authors would like to thank JSPS KAKENHI Grant Number 17K14577, The Hibi Science Foundation, Nagamori Foundation, Research Foundation for the Electrotechnology of Chubu and NSK Foundation for the Advancement of Mechatronics for their financial support.
Funding Information:
Special thanks are due to Dr. Kazuyuki Yagi of the Department of Mechanical Engineering of Kyushu University for his professional advice on EHL theory. The authors would like to thank JSPS KAKENHI Grant Number 17K14577, The Hibi Science Foundation, Nagamori Foundation , Research Foundation for the Electrotechnology of Chubu and NSK Foundation for the Advancement of Mechatronics for their financial support.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/4
Y1 - 2021/4
N2 - We propose a new active friction control method with a morphing surface using a unique diaphragm structure consisting of 60-μm thin metal film. In poor lubrication, the friction coefficient dropped significantly from 0.19 to 0.03 when the surface changed from concave to convex. Optical in situ observations revealed that the oil collected at the convexity due to capillary force and meniscus. In addition, results of electric characteristic measurements revealed that the solid contact area decreased with the convexity. In conclusion, the reduction of solid contact due to improvement of lubrication condition was likely the friction reduction mechanism of the convex shape. Because active friction control realizes minimal friction loss and multifunctionality, the morphing surface can contribute to future machine development.
AB - We propose a new active friction control method with a morphing surface using a unique diaphragm structure consisting of 60-μm thin metal film. In poor lubrication, the friction coefficient dropped significantly from 0.19 to 0.03 when the surface changed from concave to convex. Optical in situ observations revealed that the oil collected at the convexity due to capillary force and meniscus. In addition, results of electric characteristic measurements revealed that the solid contact area decreased with the convexity. In conclusion, the reduction of solid contact due to improvement of lubrication condition was likely the friction reduction mechanism of the convex shape. Because active friction control realizes minimal friction loss and multifunctionality, the morphing surface can contribute to future machine development.
KW - Active friction control
KW - Metal morphing surface
KW - Oil collecting
KW - Poor lubrication condition
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U2 - 10.1016/j.triboint.2020.106827
DO - 10.1016/j.triboint.2020.106827
M3 - Article
AN - SCOPUS:85097867515
SN - 0301-679X
VL - 156
JO - Tribology International
JF - Tribology International
M1 - 106827
ER -