Ryo Tsuboi

J-GLOBAL         Last updated: Nov 1, 2019 at 21:18
 
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Name
Ryo Tsuboi
Affiliation
Daido University
Section
School of Engineering Department of Mechanical Engineering
Job title
Associate Professor
Degree
Doctor of engineering(Tokyo University of Science)

Research Areas

 
 

Academic & Professional Experience

 
Apr 2015
 - 
Today
Associate Professor, Department of Mechanical Engineering, Daido University
 
Apr 2014
 - 
Mar 2015
Lecturer, Department of Mechanical Engineering, Daido University
 
Apr 2009
 - 
Mar 2014
Assistant professor, Department of Mechanical Engineering, Tokyo University of Science
 

Education

 
Apr 2006
 - 
Mar 2009
Mechanical Engineering, Graduate School of Engineering, Tokyo University of Science
 
Apr 2004
 - 
Mar 2006
Mechanical Engineering, Graduate School of Engineering, Tokyo University of Science
 
Apr 2000
 - 
Mar 2004
Department of mechanical engineering, Faculty of Engineering, Tokyo university of Science
 

Awards & Honors

 
May 2013
Effect of Surface Chemical Properties on the Frictional Properties of Self-Assembled Monolayers Lubricated with Oleic Acid, Tribology Online Paper Awards, Japanese Society of Tribologists
Winner: K.Miyake, T.Kume, M.Nakano, A.Korenaga, K.Takiwatari, R.Tsuboi, S.Sasaki
 

Published Papers

 
S.Kawada S.Watanabe C.Tadokoro R.Tsuboi S.Sasaki
Tribology International   119 474-480   Mar 2018   [Refereed]
Miyamoto Junji, Kodama Masayuki, Kawada Shouhei, Tsuboi Ryo
TRIBOLOGY ONLINE   13(5) 248-253   2018   [Refereed]
Kawada Shouhei, Watanabe Seiya, Tsuboi Ryo, Sasaki Shinya, Prakash Braham
TRIBOLOGY ONLINE   12(4) 155-161   2017   [Refereed]
Hikaru OKUBO, Hirochika FUKUDA, Ryo TSUBOI, Chiharu TADOKORO
Transactions of the JSME   82(838) 15-25   Jun 2016   [Refereed]
H.Nagasaki C.Tadokoro R.Tsuboi Y.Tokuta S.Sasaki
Tribology Online   11(2) 354-359   Apr 2016   [Refereed]
Naka Akihiro, Kobayashi Takashi, Katou Shinji, Tsuboi Ryo, Tadokoro Chiharu, Sasaki Shinya
TRIBOLOGY INTERNATIONAL   93 696-701   Jan 2016   [Refereed]
H.Okubo K.Oshima R.Tsuboi C.Tadokoro S.Sasaki
Tribology Online   10(6) 397-403   Dec 2015   [Refereed]
Okubo Hikaru, Tsuboi Ryo, Sasaki Shinya
WEAR   340 2-8   Oct 2015   [Refereed]
Hikaru OKUBO, Ryo TSUBOI, Chiharu TADOKORO, Shinya SASAKI
Transactions of the JSME   81(824)    Apr 2015   [Refereed]
Lubrication properties of magnetorheological fluids
S.Yano S.Kato R.Tsuboi S.Sasaki
The Finnish Journal for Tribology   2(33) 3-10   2015   [Refereed]
Yamaguchi Kazuma, Sasaki Chiaki, Tsuboi Ryo, Atherton Mark, Stolarski Tadeusz, Sasaki Shinya
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY   228(9) 1015-1019   Sep 2014   [Refereed]
S.Watanabe M.Nakano K.Miyake R.Tsuboi S.Sasaki
Langmuir   30 8078-8084   Jun 2014   [Refereed]
Y.Kuroiwa A.Amanov R.Tsuboi S.Sasaki S.Kato
Jurnal Teknoloji   66(3) 81-89   Apr 2014   [Refereed]
WATANABE Seiya, NAKANO Miki, MIYAKE Koji, TSUBOI Ryo, SASAKI Shinya
Hyomen Kagaku   35(8) 443-448   2014
Lubrication and tribo-corrosion mechamisms of imidazolium based ionic liquid was explained. Regarding corrosion, molecular behavior of water which mixed with 1-buthyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM] OTf) under corrosion proce...
Watabe T, Amanov A, Tsuboi R, Sasaki S
Journal of nanoscience and nanotechnology   13(12) 8167-8175   Dec 2013   [Refereed]
Kawada Shouhei, Watanabe Seiya, Kondo Yuriko, Tsuboi Ryo, Sasaki Shinya
TRIBOLOGY LETTERS   54(3) 309-315   Jun 2014   [Refereed]
Amanov Auezhan, Watabe Tsukasa, Tsuboi Ryo, Sasaki Shinya
SURFACE & COATINGS TECHNOLOGY   232 549-560   Oct 2013   [Refereed]
Watanabe Seiya, Takiwatari Koji, Nakano Miki, Miyake Koji, Tsuboi Ryo, Sasaki Shinya
TRIBOLOGY LETTERS   51(2) 227-234   Aug 2013   [Refereed]
Kondo Yuriko, Koyama Takahiro, Tsuboi Ryo, Nakano Miki, Miyake Koji, Sasaki Shinya
TRIBOLOGY LETTERS   51(2) 243-249   Aug 2013   [Refereed]
Oe Hironobu, Tsuboi Ryo, Kato Shinji, Sasaki Shinya
TRIBOLOGY LETTERS   51(2) 253-260   Aug 2013   [Refereed]
Amanov Auezhan, Watabe Tsukasa, Tsuboi Ryo, Sasaki Shinya
TRIBOLOGY INTERNATIONAL   62 49-57   Jun 2013   [Refereed]
Amanov Auezhan, Tsuboi Ryo, Oe Hironobu, Sasaki Shinya
TRIBOLOGY INTERNATIONAL   60 216-223   Apr 2013   [Refereed]
Yuki Kuroiwa, Auezhan Amanov, Ryo Tsuboi, Shinya Sasaki, Shinji Kato
Procedia Engineering   68 600-606   2013   [Refereed]
Mizuki Kai, Ryo Tsuboi, Shinya Sasaki
Procedia Engineering   68 12-18   2013   [Refereed]
WATANABE Seiya, NAKANO Miki, MIYAKE Koji, TSUBOI Ryo, SASAKI Shinya
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   79(805) 3272-3284   2013   [Refereed]
Room-temperature ionic liquids (RTILs) have properties such as high thermal stability, low volatility, non-flammability, low melting point, and broad liquid range, which are applicable to superior lubricants and additives. Previous researches on R...
Kondo Yuriko, Yagi Sotaro, Koyama Takahiro, Tsuboi Ryo, Sasaki Shinya
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY   226(J11) 991-1006   Nov 2012   [Refereed]
K.Miyake T.Kume M.Nakano A.Korenaga K.Takiwatari R.Tsuboi S.Sasaki
Tribology Online   7(4) 218-224   2012   [Refereed]
Kobayashi Ryujiro, Tsuboi Ryo, Sasaki Shinya
EMERGING TECHNOLOGY IN PRECISION ENGINEERING XIV   523-524 756   2012   [Refereed]
TSUBOI Ryo, YAMAMOTO Makoto
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B   75(750) 203-212   2009   [Refereed]
Electrochemical Machining (ECM) is an advanced machining technology and has been applied to highly specialized fields, such as aerospace, aeronautics, and medical industries. However, some problems remain to be solved. The efficient tool-design, e...

Misc

 
坪井涼
大同大学紀要   52 61‐64   Mar 2017
坪井涼
大同大学紀要   51 7‐10   Mar 2016
Ryo Tsuboi
Toraibarojisuto/Journal of Japanese Society of Tribologists   61 494   Jan 2016
Ryo Tsuboi
Toraibarojisuto/Journal of Japanese Society of Tribologists   60 164   Jan 2015
Ryo Tsuboi
Toraibarojisuto/Journal of Japanese Society of Tribologists   60 240   Jan 2015
Ryo Tsuboi
Toraibarojisuto/Journal of Japanese Society of Tribologists   60 354   Jan 2015

Conference Activities & Talks

 
近藤早紀, 棚村壽三, 坪井涼, 光田恵
人間-生活環境系シンポジウム報告集   6 Dec 2018   
高木雄生, 坪井涼
日本機械学会年次大会講演論文集(CD-ROM)   3 Sep 2018   
伊藤絢哉, 坪井涼
日本機械学会年次大会講演論文集(CD-ROM)   3 Sep 2018   
JU Qianli, 坪井涼
日本機械学会年次大会講演論文集(CD-ROM)   3 Sep 2018   
高橋健太, 坪井涼, 佐々木信也
日本機械学会年次大会講演論文集(CD-ROM)   3 Sep 2018   
近藤早紀, 光田恵, 棚村壽三, 坪井涼
空気調和・衛生工学会大会学術講演論文集(CD-ROM)   29 Aug 2018   
高橋健太, 坪井涼, 佐々木信也
日本トライボロジー学会トライボロジー会議予稿集(CD-ROM)   7 May 2018   
高橋健太, 坪井涼, 佐々木信也
日本機械学会機素潤滑設計部門講演会講演論文集   22 Apr 2018   
松岡勇樹, 坪井涼
日本機械学会東海支部総会講演会講演論文集(CD-ROM)   13 Mar 2018   
近藤早紀, 棚村壽三, 坪井涼, 光田恵
人間-生活環境系シンポジウム報告集   4 Dec 2017   
近藤早紀, 棚村壽三, 坪井涼, 光田恵
におい・かおり環境学会講演要旨集   1 Aug 2017   
高橋健太, 平田祐樹, 坪井涼, 佐々木信也
日本トライボロジー学会トライボロジー会議予稿集(CD-ROM)   15 May 2017   
高橋健太, 平田祐樹, 坪井涼, 佐々木信也
日本機械学会関東支部総会・講演会講演論文集(CD-ROM)   15 Mar 2017   
SASAKI Chiaki, TADOKORO Chiharu, SASAKI Shinya, TSUBOI Ryo, KORENAGA Atsushi, TOKUTA Yuki
The Proceedings of Conference of Kanto Branch   2015   
In engineering fields, surface roughness parameters are widely used for mechanical designs. However, actual surfaces have many factors which we cannot express by using a single standard surface roughness parameter. We think that there is needed to...
Katsuma Takahiro, Tsuboi Ryo, Sasaki Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
Components of a lubricant are divided into base oils and additives. Base oils dominates basic fluid properties of the lubricant. Additives support to improve the lubrication performance of oils. Oiliness additives have the friction decreasing effe...
Okubo Hikaru, Tuboi Ryo, Sasaki Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
Diamond-like carbon (DLC) coatings have begun to appear attractive for automotive parts due to their excellent friction and wear resistance properties. In recent years, many researchers focus on their tribological properties under boundary lubrica...
Ichise Yusuke, Sasaki Shinya, Tsuboi Ryo
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
Ionic liquids are expected to be used as novel high-performance lubricants because they have attractive characteristics such as low volatility, high-thermal stability, and oxidation stability. It is known that ionic liquids exhibit excellent lubri...
Watanabe Hirotomo, Tsuboi Ryo, Sasaki Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
ZnDTP has two roles as antioxidants and antiwear agents. This additive forms tribo-films which improve tribological properties. For clarification of the improving mechanism, most of the investigations show analyzed results of the composition of tr...
Yano Shinnosuke, Sasaki Shinya, Tsuboi Ryo, Kato Shinji
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
Magneto-rheological (MR) fluids are functional fluids obtained by dispersing micro-sized ferri-magnetic particles in oil. One of the features of MR fluids is that its viscosity could be controlled by magnetic field. Due to this features, the devic...
Nagasaki Hiroshi, Sasaki Shinya, Tsuboi Ryo
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
2-D Surface roughness parameters, which express Geometrical Product Specification (GPS), are defined as an industrial standard by ISO. The surface roughness parameters defined by 2-D contour curve are widely used in engineering fields. Nowadays, 3...
YAMANE Taiki, TSUBOI Ryo, SASAKI Shinya, Kurita Tsuneo
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
A laser processing is used for the micro-fabrication of the stent. Because processing heat causes recoagulation of molten material, it is necessary to remove it with another processing. Thus, it is required to improve the heat influence in the las...
Naka Akihiro, Tsuboi Ryo, Sasaki Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2014   
Low carbon steel is one of the materials widely used in engineering fields. It has been known that decrease in carbon content leads to a high welding workability. However, it makes the hardness low. One of the effective methods to keep high weldin...
OSHIMA Yasutsugu, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Conference of Kanto Branch   2014   
Surface texturing has been recognized to be very efficient in modifying tribological performances of sliding surfaces. The effects of surface texturing change with lubricating conditions. In the hydrodynamic lubrication, it is known that generatio...
SASAKI Chiaki, TSUBOI Ryo, SASAKI Shinya, KORENAGA Atsushi, TOKUTA Yuki
The Proceedings of Conference of Kanto Branch   2014   
In engineering fields, surface roughness parameters are widely used for mechanical designs. However, actual surfaces have many factors which we cannot express by using a single standard surface roughness parameter. We think that there is needed to...
KUROIWA Yuki, SASAKI Shinya, TSUBOI Ryo, KATO Shinji
The Proceedings of Conference of Kanto Branch   2014   
It is well known that lead-bronze is widely used in the industry owing to the high anti-seizure property. However, because of toxicity of lead, the industry demands a lead-free copper alloy from the viewpoint of environment. For this reason, the o...
KOYAMA Michio, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Conference of Kanto Branch   2014   
Nano-laminated coatings have good tribological properties. But, the friction reduction mechanism is not sufficiently investigated yet. This report aimed to investigate the mechanism from adhesion properties. Two kind of Cu/Mo Nano-laminated coatin...
FUKUDA Hirochika, TSUBOI Ryo, SASAKI Shinya, TAMURA Tetsuya, KATO Shinji
The Proceedings of Conference of Kanto Branch   2014   
Diamond-like carbon films are beginning to be used on automobile engine parts because of their excellent friction and wear resistance properties. The engine oil is composed with base oil and some additives. ZnDTP and MoDTC are mainly used as anti-...
KAWADA Shouhei, KONDO Yuriko, WATANABE Seiya, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Conference of Kanto Branch   2014   
Ionic liquids are expected to be used as new lubricants because of their attractive characteristics such as high thermal stability, low vapor pressure. As problem point of the ionic liquids, knowledge of the corrosion phenomena and lubricating pro...
KOBAYASHI Ryujiro, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Conference of Kanto Branch   2014   
Recently, micro systems as MEMS are researched for various applications. From the view point of cost efficiencies and space-saving, it is required that high accurate and compact manipulator be adopted. However, downsizing of the manipulator has pr...
KATSUMA Takahiro, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2014   
Components of a lubricant are divided into base oil and additives. Base oil dominates basic fluid properties of a lubricant. Additives support to improve the lubrication performance of oils. Oiliness additives have the friction decreasing effect d...
Watanabe Hirotomo, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2014   
In order to understand the effects of the tribo-film formation derived from ZnDTP (zinc dialkylditiophosphate) on friction behavior, friction tests were carried out with the time course analysis of the sliding surface by using FT-IR (Fourier trans...
YANO Shinnosuke, KATO Shinji, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2014   
MR fluids are produced by dispersing micron-sized ferri-magnetic particles in oil. Generally, the presence of foreign particles in a lubricant affects the sliding behavior of the lubricated surface. Accordingly, the dispersed particles in MR fluid...
SUZUKI Yusuke, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2013   
Additives are components of lubricants. According to the required function, additives have a lot of species. Oiliness additives belong to one of these species. The required function for oiliness additives is the friction reduction under boundary l...
A study on in-situ observation of the micro flow of lubricant on the textured surface
Kai Mizuki, Tsuboi Ryo, Sasaki Shinya
INTERNATIONAL TRIBOLOGY CONFERENCE MALAYSIA 2013   2013   
Effectiveness of surface texturing for improving the anti-seizure property of copper alloy
Kuroiwa Yuki, Amanov Auezhan, Tsuboi Ryo, Sasaki Shinya, Kato Shinji
INTERNATIONAL TRIBOLOGY CONFERENCE MALAYSIA 2013   2013   
KOYAMA Michio, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2013   
FUKUDA Hirochika, TSUBOI Ryo, SASAKI Shinya, TAMURA Tetsuya, KATO Shinji
The Proceedings of the Materials and processing conference   2013   
OKUBO Hikaru, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2013   
HASEGAWA Hiroyuki, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2013   
KUROIWA Yuki, TSUBOI Ryo, SASAKI Shinya, KATO Shinji
The Proceedings of the Materials and processing conference   2013   
GOONASEKERAK Hary, TSUBOI Ryo, AUEZHAN Amanov, SASAKI Shinya
The Proceedings of the Materials and processing conference   2013   
OZAKI Takehiro, TSUBOI Ryo, SASAKI Shinya, KATO Shinji
The Proceedings of the Materials and processing conference   2013   
SASAKI Chiaki, TSUBOI Ryo, SASAKI Shinya, KORENAGA Atsushi, TOKUTA Yuki
The Proceedings of Mechanical Engineering Congress, Japan   2013   
In engineering fields, surface roughness parameters are widely used for mechanical designs. However, actual surfaces have many factors which we cannot express by using a single standard surface roughness parameter. There is strong demand to develo...
Kobayashi Ryujiro, Tsuboi Ryo, Sasaki Shinya
Proceedings of JSPE Semestrial Meeting   2013   
近年、細胞やMEMSなどの微小物体を扱うため,小型で高精度なマニピュレータが必要とされている。そこで小型化しても剛性を高く保つことができる構造としてパラレルリンクを検討した.また,精密で広い動作範囲をとれる圧電素子を用いたインパクトドライブ機構をアクチュエータとして採用した.本研究では設計した小型6軸パラレルリンクマニピュレータの評価を通じて,小型化に関連する問題と解決策を調査した.
李 育衡, 福田 宙央, 坪井 涼
機械材料・材料加工技術講演会 M&P   30 Nov 2012   
EFFECT OF SURROUNDING HYDROGEN GAS ON FRICTION AND WEAR CHARACTERISTICS OF DLC FILMS
Oshima Kenta, Tokuta Yuuki, Tsuboi Ryo, Sasaki Shinya, Kawaguchi Masahiro
ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS   2012   
EFFECT OF FATTY ACIDS ON LUBRICITY OF VEGETABLE OILS
Ishida Ryota, Tsuboi Ryo, Sasaki Shinya
ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS   2012   
RESEARCH ON LUBRICITY OF IONIC LIQUIDS ON METAL ALLOYS
Koyama Takahiro, Kondo Yuri, Tsuboi Ryo, Sasaki Shinya, Miyake Koji, Nakano Miki
ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS   2012   
HASEGAWA Yuji, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2012   
A novel surface modification technique, which combine In-situ tribo-coating lubrication by using solid lubricant and Laser Surface Texturing techniques, is proposed. LST was performed on the Ti-6Al-4V titanium alloy disks and dimples with diameter...
Funakoshi Kouta, Shirato Shou, Tsuboi Ryo, Sasaki Shinya, Taniguchi Jun
The Proceedings of the Symposium on Micro-Nano Science and Technology   2012   
Ultraviolet-nanoimprint lithography (UV-NIL) is a powerful tool for mass production of nano-scale patterns. In UV-NIL, it is very important to coat the mold surface with a release agent to prevent the adhesion of UV curable resin. However, the rel...
Shirato Shou, Tsuboi Ryo, Sasaki Shinya, Miyake Koji
The Proceedings of the Symposium on Micro-Nano Science and Technology   2012   
Friction properties under boundary lubrication are determined by surface characteristics. On sliding surfaces, tribofilms are produced by lubricant additives. It is essential to study mechanical properties of the tribofilms for revealing friction ...
Koyama Michio, Kato Shinji, Tsuboi Ryo, Sasaki Shinya
The Proceedings of the Symposium on Micro-Nano Science and Technology   2012   
PVD sputtering machine was used for film formation. Five kinds of specimens - Mo single layer, Cu single layer, Mo/Cu multilayer with 10 layers, Mo/Cu nano-multilayer with 100 layers and Mo/Cu nano-multilayer with laser surface texturing - were pr...
WATANEBE Seiya, TAKIWATARI Koji, NAKANO Miki, MIYAKE Koji, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2012   
KOBAYASHI Ryujiro, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2012   
Recently, compact machine tool is demanded in manufacturing of small machines with high accuracy. However, the compact machine, i.e. downsizing of the machines, has problems, such as reduction of accuracy and decrease in the motion range. Accordin...
OSHIMA Kenta, TSUBOI Ryo, SASAKI Shinya, KAWAGUCHI Masahiro
The Proceedings of the Materials and processing conference   2012   
DLC (Diamond-Like Carbon) film holds promise for a lot of machine elements as a hard thin film with an excellent frictional property and wear resistance. We focused on surrounding atmospheric effects on tribological characteristics of DLC films. D...
LEE EeHern, FUKUDA Hirochika, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2012   
ONO Haruna, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2011   
Formation of adsorption layer on sliding surfaces plays important roles in friction and wear of materials under boundary lubrication with additives. It is necessary to monitor the adsorption behavior of the lubricant additives. There are a lot of ...
HASEGAWA Yuji, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2011   
A novel surface modification technique named Brush Method, which combine traditional surface coating techniques and surface texturing techniques, is proposed. Tribological properties of treated SUJ2 disk specimens were investigated against 410 SUJ...
ISHIDA Ryota, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2011   
Vegetable oil has an excellent biodegradability. Therefore, it holds promise as an environment-friendly lubricant. Vegetable oil has superior characteristics such as film strength is strong; viscosity index is high. However, applications of the ve...
OSHIMA Kenta, TSUBOI Ryo, SASAKI Shinya, KAWAGUCHI Masahiro
The Proceedings of Mechanical Engineering Congress, Japan   2011   
DLC (Diamond-Like Carbon) film holds promise to a lot of machine elements as a hard thin film with an excellent frictional property and wear resistance. We focused on surrounding atmospheric effects on tribological characteristics of DLC film. DLC...
NAKANO Akira, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2011   
Surface texturing holds promise in improving sliding properties. Some effects of surface texturing is known such as canceling negative pressure in the textures by the generation of cavitation, supplying lubricant to surfaces, improving running-in ...
SHIRATO Shou, MIYAKE koji, TSUBOI Ryo, SASAKI Shinya
The Proceedings of Mechanical Engineering Congress, Japan   2011   
Friction properties under boundary lubrication are determined by surface characteristics. On sliding surfaces, tribofilms are produced by lubricant additives. It is essential to study mechanical properties of the tribofilms for revealing friction ...
OTHMAN Zarith Suffia Binti, HASEGAWA Yuji, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2010   
A novel tribo-coating method was developed to improve tribological properties of steel surfaces. Molybdenum layer was synthesized by rubbing steel surface with high-speed- rotating brush made of molybdenum wire. Formation of the molybdenum tribo-l...
ISHIDA Yasuyuki, KAWASHIMA Tomoyuki, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2010   
TANIGUCHI Takuya, OSHIMA Kenta, TOKUTA Yuki, TSUBOI Ryo, SASAKI Shinya, KAWAGUCHI Masahiro
The Proceedings of the Materials and processing conference   2010   
SATO Ryo, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Materials and processing conference   2010   
Tsuruoka Ryogo, Tsuboi Ryo, Sasaki Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2010   
Water lubrication is one of the candidates of the tribo-system with low negative environmental impact. It is well known that silicon based ceramics show excellent tribological properties under lubrication with water. The characteristic improvement...
ONO Haruna, TSUBOI Ryo, SASAKI Shinya
The Proceedings of the Machine Design and Tribology Division meeting in JSME   2010   
Formation of adsorption layer on sliding surface causes important roles for the friction and wear of materials under lubrication with additives. In this study, we have applied the Quartz Crystal Microbalance (QCM) for the in-situ monitoring of ads...
ONO Haruna, TSUBOI Ryo, SASAKI Shinya
The proceedings of the JSME annual meeting   2010   
Formation of adsorption layer on sliding surface causes important roles for the friction and wear of materials under lubrication with additives. In this study, we have applied the Quartz Crystal Microbalance (QCM) for the in-situ monitoring of ads...
Modeling and Applications of Electrochemical Machining Process
Ryo Tsuboi, Makoto Yamamoto
Proceedings of ASME 2009 International Mechanical Engineering Congress and Exposition   Nov 2009   
TSUBOI Ryo, YAMAMOTO Makoto
The proceedings of the JSME annual meeting   2009   
Electro-Chemical Machining (ECM) is an advanced machining technology and has been applied to highly specialized fields, such as aerospace, aeronautics, and medical industries, However, some problems remain to be solved The efficient tool-design, e...
Investigating Behavior of Hydrogen Bubbles in Electro-Chemical Machining
Ryo Tsuboi, Makoto Yamamoto
Proceedings of ASME, 7th Symposium on Transport Phenomena in Manufacturing Processes   Aug 2008   
Modeling of multi-phase flow in electro-chemical machining - One-way coupling versus two-way coupling
Ryo Tsuboi, Kazuaki Inaba, Makoto Yamamoto, Dai Kato
Proceedings of the 5th Joint ASME/JSME Fluids engineering summer conference   Aug 2007   
Modelling of three-phase flow in electro-chemical machining
Ryo Tsuboi, Kazuyuki Toda, Makoto Yamamoto, Ryuki Nohara, Dai Kato
Proceedings of the ASME Fluids Engineering Division Summer Conference, Vol 2   May 2005   

Research Grants & Projects

 
Improvement of tribological properties near the dead center of piston ring using surface texturing
The NAGAI Foundation for Science & Technology: 
Project Year: Apr 2019 - Mar 2020    Investigator(s): Ryo Tsuboi
The Hibi Science Foundation: Research grant
Project Year: Apr 2019 - Mar 2020    Investigator(s): Ryo Tsuboi
Development of simulation method of elastohydrodynamic lubrication considering thermal deformation of sliding surface
Ichihara International scholarship foundation: Research grant
Project Year: Apr 2016 - Mar 2017    Investigator(s): Ryo Tsuboi