Detailed Information

Research Field/Keywords for Research Field

• Machine design, Machine Elements, Tribology

Education

• 1988/03, Graduated
• 1990/03, Master Course, Completed

Employment Experience

• 1990/04 - 2007/03 Research Associate, Faculty of Science and Engineering, Saga University
• 2007/04 - 2010/03 Assistant Professor, Mechanical Engineering , Faculty of Science and Engineering, Saga University
• 2010/04 - 2015/03 Assistant Professor, Mechamical Engineering, Graduate School of Science and Engineering, Saga University
• 2015/04 - 2019/03 Associate Professor, Mechanical Engineering, Graduate School of Science and Engineering, Saga University
• 2019/04 -  *  Associate Professor, Science and Engineering, Faculty of Science and Engineering, Saga University

Field of Specialization

• Design engineering/Machine functional elements/Tribology, Materials/Mechanics of materials, Production engineering/Processing studies, Fluid engineering, Computational science

Membership in Academic Societies

• The Japanese Society of Mechanical Engineers, Japanese Society of Tribologists

Awards

• 日本機械学会賞（論文） （2003/04）

Themes for Ongoing Research

• Study on EHL Oil Film Behavior under Impact Loading
• Study on lubricating oil for stern tube bearing
• Shear Stress Analysis of EHL Oil Films Based on Thermal EHL Theory
• Study of Three Dimensional Measurement and Characterization of the Contact Surfaces
• Study on hydrodynamic lubrication performance of journal bearing
• Study on Rolling Contact Fatigue of Bearing Steel Roller
• Study on Durability of WC Roller under Rolling Contact Conditions
• Effect of Axial Load on Ball Motion and States of Oil Film Formation in Ball Screw
• Study on Rolling Contact Fatigue Strength of Thermally Sprayed Coating
• Study on tribological and rheological properties of lubricating oils
• Study on Ball Motion and Running Performance of Angular Contact Ball Bearing

Research Themes in the Past

• Study of Three Dimensional Measurement and Characterization of the Contact Surfaces

Research Topics and Results

• Squeeze Oil Film Behavior of Lubricating Oils corresponding to ISO VG22 under Impact loading 2023/09
• Shear stress analysis of EHL oil films applying a shear-thinning rheology model 2019/09
• High pressure properties of lubricating oil containing aggregate type soft matter and its EHL oil film formation under impact contact 2018/09
• An explanation of the dependence of bulk modulus of liquids on pressure in terms of free volume 2018/09
• The influence of the phase transition of lubricants on press working 2018/09
• Study on Impact Elastohydrodynamic Lubrication Behaviour in Rice Bran Oil 2017/11
• Ball Screw Performance and Film Formation Behavior of Four Multiply Alkylated Cyclopentane (Mac) Base Greases for Space Applications 2017/09
• The influence that phase transition of the lubricatin oil gives to deep drawing 2016/10
• Study on Non-Newtonian Thermal EHL Analysis of Perfluoropolyether Fluids with High Density 2016/10
• Study on High Pressure Physical Properties of Rice Bran Oil 2016/09
• The influence that phase transition of the lubricating oil gives to deep drawing 2016/05
• High Pressure Properties of Lubricating Oil containing Aggregate type Soft Matter and its EHL Oil Film Formation under Impact Contact 2016/05
• High Pressure Properties of Engine Oil containing Soft Matter and its EHL Oil Film Formation under Impact Contact 2016/03
• Tribological Properties of Plasma-Sprayed Alumina Coatings for Artificial Hip Joints 2015/09
• High Pressure Density Properties of High Bulk Modulus Oils 2015/09
• Tribological Properties of Plasma-Sprayed Alumina Coatings in Bovine Serum Albumin Solution 2015/05
• Durability of Rolling Roll Materials in Rolling Contact 2015/05
• Bulk modulus of lubricant at low temperature by the sonic velocity measurement 2nd report -Comparison with the high-pressure density test- 2015/05
• Shear Flow of EHL Oil Films and its Effect on Distributions of Temperature and Shear Stress 2014/12
• EHL Traction Analysis of Perfluoropolyether Fluids Based on Bulk Modulus 2014/12
• Effect of Bearing Surface Wear on Hydrodynamic Lubrication Performance 2014/11
• High Pressure Density Properties in High Bulk Modulus Blended Oils 2014/05
• Prediction of Pressure-Viscosity Coefficient of Environmentaly Friendly Vegetable Oils from Adiabatic Bulk Modulus Based on Sound Velocity under Atmospheric Pressure 2014/02
• Non-Newtonian Thermal EHL Analysis 2013/11
• Study on Non-Newtonian Thermal EHL Analysis 2013/10
• A study of AlN coated insulation dot electrostatic chuck by plasma sputtering 2013/10
• Study on High Pressure Properties of Botryococcus braunii Oil 2013/10
• Study on High Pressure Density and Viscosity of Ionic Liquids for Vacuum Lubrication 2013/10
• In-situ observation of touch-down of bearing surface in hard disk drivers 2013/10
• Wear Resistance of Plasma-Sprayed Alumina Coatings under Water Lubrication 2013/10
• EHL (Elasto-Hydrodynamic Lubrication) Theory and its Application・Study on Thermal EHL analysis 2013/10
• Effect of Hertzian Contact Pressure on Shear Stress Distribution of EHL Oil Films 2013/09
• High Pressure Behavior of Oil Extracted from Green Alga Botryococcus braunii 2013/09
• Thermal Conductivity of Lubricating Oil under Elliptical Contact and its Effect on Shear Stress Distribution of EHL Oil Films 2013/09
• High Presssure Rheology of Ionic Liquids Based on Phase Diagram 2013/09
• High Pressure Rheology of Environmentally Friendly Vegetable Oils 2013/07
• Non-Newtonian Thermal Elastohydrodynamic Lubrication Analysis of Perfluoropolyether Fluids with High Density 2013/05
• Lubrication Regime Transition Analysis based on Non-Newtonian Thermal Elastohydrodynamic Lubrication under Elliptical Contact: Traction and Film Thickness Behavior 2013/05
• Rolling Bearing Performance and Film Formation Behavior of Four Multiply-Alkylated Cyclopentane (MAC) Base Greases for Space Applications 2013/01
• Shear Stress Analysis of EHL Oil Films based on Thermal EHL Theory under Elliptical Contact - Effect of Entrainment Velocity - 2012/09
• Effect of Hertzian Contact Pressure on Shear Behavior of EHL Oil Films 2012/05
• Evaluation of High Pressure Density Property in Oily High Bulk Modulus Fluid 2012/05
• Effects of Slip Ratio and Roller Combination on Durability of Thermally Sprayed WC Cerment Coating under Dry Rolling/Sliding Contact Conditions 2012/03
• Effects of Base Oil and Thickener of Space Grease on States of Oil Film Formation in Ball Screw 2012/03
• Study on Wear Resistance Property of Materials for Artificial Hip Joints 2012/03
• Fundamental Phenomena－Introduction to Elastohydrodynamic Lubrication― 2012/03
• Effect of Shear Behaviour of EHL Oil Films on Shear Stress Distribution 2011/10
• Oil Film Formation and Running Performance in Ball Screw Lubricated with Greases for Space Applications 2011/10
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Effect of Thermal Conductivity - 2011/05
• Effect of Shear Behaviour of Oil Films on Traction Characteristics under EHL Conditions 2011/03
• Durability of Bearing Steel Roller under Rolling/ Sliding Contact Conditions - Effect of Combination of Surface Roughness - 2011/03
• Fundamental Equations for Thermal EHL Theory and Analytical Techniques 2011/01
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Relation between Slip Ratio and Shear Rate distribution - 2010/09
• Effect of Mating Surface Roughness on Durability on Thermally Sprayed Cermet Coating under Dry Rolling Contact Conditions 2010/09
• Oil Film Formation and Running Performance in Ball Screw Lubricated with Advanced Greases for Space Application 2010/09
• Ball-on-Disk Test of Si3N4 Ball against Iron and Copper Disk in Conjunction with Electrolyzing 2010/09
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Effect of Shear Velocity Distribution - 2010/05
• Shear Stress Analysis of EHL Oil Film under Elliptical Contact Condition(Effect of Shear Behaviour of Lubricating Oil) 2010/03
• Durability of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions (Effect of Mating Surface Roughness) 2009/10
• Effect of Slip Ratio on Rolling Contact Fatigue of Bearing Steel Roller under Partial EHL Conditions 2009/10
• Shear Stress Analysis of EHL Oil Films Based on Thermal EHL Theory under Elliptical Contact 2009/09
• Effects of Substrate Hardness and Coating Thickness on Durability of Thermally Sprayed WC Cerment Coating under Dry Rolling/Sliding Contact Conditions 2009/09
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Effect of Inlet Temperature - 2009/05
• Effect of Outer Ring Deformation on Oil Film Formation in Angular Contact Ball Bearing 2009/05
• Shear Stress Analysis of EHL Oil Films based on Thermal EHL Theory - In the Case of Elliptical Contact Condition - 2009
• Shear Stress Analysis of EHL Oil Films Based on Thermal EHL Theory - Effect of Inlet Oil Temperature - 2008/10
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory - In the case of Elliptical Contact Condition - 2008/09
• Rolling Contact Fatigue Strength of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions -Effects of Coating Thickness and Substrate Hardness- 2008/09
• Effect of Axial Load on Ball Motion and Oil Film Formation in Ball Screw 2008/09
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory - Effect of Inlet Oil Temperature - 2008/05
• Rolling Contact Fatigue Strength of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions - Effect of Rolling-Sliding Conditions - 2008/05
• Dynamic Behaviour of Ball Motion and Its Effect on Oil Film Formation in Ball Screw 2003

Original Articles

• EHL Traction Analysis of Perfluoropolyether Fluids Based on Bulk Modulus;　2014/12
  ANNOUNCEMENT INFO.;　Finnish Journal of Tribology, 32, 29-38
  AUTHOR;　Toshifumi Mawatari, Nobuyoshi Ohno, Bo Zhang, Motohiro Kaneta, Petra Sperka, Ivan Krupka, Martin Hartl
  
• High Pressure Rheology of Environmentally Friendly Vegetable Oils;　2013/07
  ANNOUNCEMENT INFO.;　Tribology Letters, 51, 2, 273-280
  AUTHOR;　Toshifumi Mawatari,Ryusei Fukuda, Hirohito Mori, Sobahan Mia, Nobuyoshi Ohno
  
• Rolling Bearing Performance and Film Formation Behavior of Four Multiply-Alkylated Cyclopentane (MAC) Base Greases for Space Applications;　2013/01
  ANNOUNCEMENT INFO.;　Tribology Transactions,DOI:10.1080/10402004.2013.769287
  AUTHOR;　Toshifumi Mawataria,Toru Haradaa,Masayuki Yanoa, Hiroshi Shiomib, Shingo Obarab,Nobuyoshi Ohnoa
  
• Shear Stress Analysis of EHL Oil Films based on Thermal EHL Theory - In the Case of Elliptical Contact Condition -;　2009
  ANNOUNCEMENT INFO.;　Tribology Online, 4, 3, 70-73
  AUTHOR;　T. Mawatari and A. Nakajima
  
• Shear Stress Analysis of EHL Oil Films Based on Thermal EHL Theory - Effect of Inlet Oil Temperature -;　2008/10
  ANNOUNCEMENT INFO.;　Tribology Online, 3, 5, 268-273
  AUTHOR;　T. Mawatari, A. Nakajima, H. Matsumoto
  
• Effect of Slip Ratio on Rolling Contact Fatigue of Bearing Steel Rollers Lubricated with Traction Oil;　2006
  ANNOUNCEMENT INFO.;　Solid Mechanics & its Applications, 134, 333-344
  AUTHOR;　A. Nakajima, T. Mawatari
  
• The States of Oil Film Formation and Ball Motion in Ball Screw with Retainers;　2006
  ANNOUNCEMENT INFO.;　Proceedings of 5th International Conference on Mechanics and Materials in Design, 301-302
  AUTHOR;　A. Nakajima, T. Mawatari
  
• Effects of Substrate Surface Finish and Substrate Material on Durability of Thermally Sprayed WC Cermet Coating in Rolling with Sliding Contact;　2006
  ANNOUNCEMENT INFO.;　Journal of Tribology International, 39, 678-685
  AUTHOR;　D. M. Nuruzzaman, A. Nakajima and T. Mawatari
  
• Durability of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions;　2006
  ANNOUNCEMENT INFO.;　Proceedings of the 3rd Asia Int. Conf. on Tribology, 653-654
  AUTHOR;　A. Nakajima, T. Mawatari
  
• Study on Rolling Contact Fatigue of Bearing Steel Roller Lubricated with Traction Oil under High Slip Ratio Conditions;　2006
  ANNOUNCEMENT INFO.;　Proceedings of the 3rd Asia Int. Conf. on Tribology, 655-656
  AUTHOR;　T. Mawatari, A. Nakajima
  
• Rolling Contact Fatigue Life of Bearing Steel Rollers Lubricated with Low Viscosity Traction Oil;　2005
  ANNOUNCEMENT INFO.;　Life Cycle Tribology, Tribology Series 48, 48, 351-362
  AUTHOR;　A. Nakajima, T. Mawatari
  
• Effects of Substrate Surface Finish on Durability of Thermally Sprayed WC Cermet Coating under Rolling/Sliding Contact;　2005
  ANNOUNCEMENT INFO.;　Japanese Journal of Tribology, 50, 4, 437-448
  AUTHOR;　A. Nakajima, D. M. Nuruzzaman, T. Mawatari and M. Yoshida
  
• Rolling Contact Fatigue Strength of Thermally Sprayed WC Cermet Coating under Partial EHL Conditions;　2005
  ANNOUNCEMENT INFO.;　Japanese Journal of Tribology, 50, 4, 449-460
  AUTHOR;　A. Nakajima, D. M. Nuruzzaman, T. Mawatari and M. Yoshida
  
• 転がりー滑り接触下におけるWCサーメット溶射被膜の耐久性に及ぼす下地加工の影響;　2005
  ANNOUNCEMENT INFO.;　, 50, 7, 528-536
  AUTHOR;　
  
• 部分EHL条件下におけるWCサーメット溶射被膜の転がり疲れ強度;　2005
  ANNOUNCEMENT INFO.;　, 50, 7, 537-545
  AUTHOR;　
  
• Dynamic Behaviour of Ball Motion and its Effect on Oil Film Formation in Ball Screw;　2004
  ANNOUNCEMENT INFO.;　Transient Processes in Tribology, Tribology Ser.43, 43, 449-457
  AUTHOR;　A. Nakajima and T. Mawatari
  
• Dynamic Behaviour of Ball Motion and Its Effect on Oil Film Formation in Ball Screw;　2003
  ANNOUNCEMENT INFO.;　Proc. of 30th Leeds-Lyon Symposium on Tribology, 1-9
  AUTHOR;　A. Nakajima, T. Mawatari
  

Material, Commentary, Editorials, Research Report, A Comprehensive Journal Articles

• Non-Newtonian Thermal EHL Analysis;　2013/11
  ANNOUNCEMENT INFO.;　Journal of Japan Society for Design Engineering, 48, 11, 500-503
  AUTHOR;　Toshifumi Mawatari
  
• Fundamental Phenomena－Introduction to Elastohydrodynamic Lubrication―;　2012/03
  ANNOUNCEMENT INFO.;　, 57, 3, 152-154
  AUTHOR;　Toshifumi Mawatari
  
• Fundamental Equations for Thermal EHL Theory and Analytical Techniques;　2011/01
  ANNOUNCEMENT INFO.;　Journal of Japanese Society of Tribologists, 56, 1, 10-17
  AUTHOR;　Toshifumi MAWATARI
  

General Lectures

• Squeeze Oil Film Behavior of Lubricating Oils corresponding to ISO VG22 under Impact loading;　2023/09
  ANNOUNCEMENT INFO.;　9th International Tribology Conference, Fukuoka 2023 (ITC Fukuoka 2023), 56-57
  AUTHOR;　Hiroki KANAO, Kosei FUJITA, Toshifumi MAWATARI and Bo ZHANG
  
• Shear stress analysis of EHL oil films applying a shear-thinning rheology model;　2019/09
  ANNOUNCEMENT INFO.;　Proceedings of International Tribology Conference Sendai 2019, pp.1-2
  AUTHOR;　Toshifumi Mawatari, Taisuke Ikio, Nobuyoshi Ohno, Bo Zhang
  
• High pressure properties of lubricating oil containing aggregate type soft matter and its EHL oil film formation under impact contact;　2018/09
  ANNOUNCEMENT INFO.;　Proceedings of Asia International Conference on Tribology 2018, 204-205
  AUTHOR;　Toshifumi Mawatari, Yohei Sakamoto, Bo Zhang, Nobuyoshi Ohno
  
• An explanation of the dependence of bulk modulus of liquids on pressure in terms of free volume;　2018/09
  ANNOUNCEMENT INFO.;　Proceedings of Asia International Conference on Tribology 2018, 208-209
  AUTHOR;　Bo Zhang, Toshifumi Mawatari
  
• The influence of the phase transition of lubricants on press working;　2018/09
  ANNOUNCEMENT INFO.;　, 198-199
  AUTHOR;　Nobuhide Tanino, Ryohei Shinozaki, Hideo Sugii, Bo Zhang, Toshifumi Mawatari
  
• Study on Impact Elastohydrodynamic Lubrication Behaviour in Rice Bran Oil;　2017/11
  ANNOUNCEMENT INFO.;　Proceedings of Tribology Conference 2017 Autumn Takamatsu, 1-2
  AUTHOR;　Yohei Sakamoto, Hidetaka Kariya, Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno
  
• Ball Screw Performance and Film Formation Behavior of Four Multiply Alkylated Cyclopentane (Mac) Base Greases for Space Applications;　2017/09
  ANNOUNCEMENT INFO.;　Proceedings of 6th World Tribology Congress, 1-4
  AUTHOR;　Toshifumi Mawatari, Nobuyoshi Ohno, Bo Zhang, Akira Nakajima, Hiroshi Shiomi, Shingo Obara
  
• Development of Novel High Pressure Density Mensuration of lubricants;　2016/10
  ANNOUNCEMENT INFO.;　, 196-197
  AUTHOR;　Bo Zhang, Toshifumi Mawatari, Yohei Sakamoto
  
• Impact-fretting wear properties of type 304 stainless steel in Na2SO4 solution;　2016/10
  ANNOUNCEMENT INFO.;　, 118-119
  AUTHOR;　Yoshiki Sato, Yuta Nakagawa, Toshifumi Mawatari, Bo Zhang
  
• The influence that phase transition of the lubricatin oil gives to deep drawing;　2016/10
  ANNOUNCEMENT INFO.;　, 278-279
  AUTHOR;　Nobuhide Tanino, Ryohei Shinozaki, Hideo Sugii, Bo Zhang, Toshifumi Mawatari
  
• Study on Non-Newtonian Thermal EHL Analysis of Perfluoropolyether Fluids with High Density;　2016/10
  ANNOUNCEMENT INFO.;　, 85-86
  AUTHOR;　Toshifumi Mawatari, Nobuyoshi Ohno, Bo Zhang
  
• Study on High Pressure Physical Properties of Rice Bran Oil;　2016/09
  ANNOUNCEMENT INFO.;　, 1-3
  AUTHOR;　Yohei Sakamoto, Toshifumi Mawatari, Yoshiki Sato, Bo Zhang, Nobuyoshi Ohno
  
• The influence that phase transition of the lubricating oil gives to deep drawing;　2016/05
  ANNOUNCEMENT INFO.;　, 262-263
  AUTHOR;　Nobuhide Tanino, Ryohei Shinozaki, Hideo Sugii, Bo Zhang, Toshifumi Mawatari
  
• High Pressure Properties of Lubricating Oil containing Aggregate type Soft Matter and its EHL Oil Film Formation under Impact Contact;　2016/05
  ANNOUNCEMENT INFO.;　, 63-64
  AUTHOR;　Toshifumi Mawatari, Tomohiro Yamada, Yohei Sakamoto, Yutaka Hara, Bo Zhang, Nobuyoshi Ohno
  
• High Pressure Properties of Engine Oil containing Soft Matter and its EHL Oil Film Formation under Impact Contact;　2016/03
  ANNOUNCEMENT INFO.;　, 168, 1, 343-344
  AUTHOR;　Tomohiro YAMADA, Yohei SAKAMOTO, Toshifumi MAWATARI, Bo ZHANG, Nobuyoshi OHNO
  
• Tribological Properties of Plasma-Sprayed Alumina Coatings for Artificial Hip Joints;　2015/09
  ANNOUNCEMENT INFO.;　Proc. of ITC, TOKYO 2015, 900-901
  AUTHOR;　Yoshiki Sato, Bo Zhang, Toshifumi Mawatari, Hiroki Ishibashi
  
• High Pressure Density Properties of High Bulk Modulus Oils;　2015/09
  ANNOUNCEMENT INFO.;　Proc. of ITC, TOKYO 2015, 718-719
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Yuta Tashiro, Nobuyoshi Ohno, TadashiKisen
  
• Tribological Properties of Plasma-Sprayed Alumina Coatings in Bovine Serum Albumin Solution;　2015/05
  ANNOUNCEMENT INFO.;　, 396-397
  AUTHOR;　Yoshiki Sato, Bo Zhang, Toshifumi Mawatari, Hiroki Ishibashi
  
• Durability of Rolling Roll Materials in Rolling Contact;　2015/05
  ANNOUNCEMENT INFO.;　, 432-433
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Keisuke Morisaki, Akira Nakajima, Toshiyuki Hattori and Eihachirou Matsunaga
  
• Bulk modulus of lubricant at low temperature by the sonic velocity measurement 2nd report -Comparison with the high-pressure density test-;　2015/05
  ANNOUNCEMENT INFO.;　, 195-196
  AUTHOR;　Bunji Ono, Toshinobu Sigematsu, Toshifumi Mawatari, Nobuyoshi Ohno
  
• Shear Flow of EHL Oil Films and its Effect on Distributions of Temperature and Shear Stress;　2014/12
  ANNOUNCEMENT INFO.;　Proceedings of Czech-Japan Tribology Workshop, 1-4
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno, Akira Nakajima
  
• Effect of Bearing Surface Wear on Hydrodynamic Lubrication Performance;　2014/11
  ANNOUNCEMENT INFO.;　, 208-209
  AUTHOR;　Toshifumi Mawatari, Bo Zhang
  
• High Pressure Density Properties in High Bulk Modulus Blended Oils;　2014/05
  ANNOUNCEMENT INFO.;　, 321-322
  AUTHOR;　Yuta Tashiro, Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno, Tadashi Kisen
  
• Prediction of Pressure-Viscosity Coefficient of Environmentaly Friendly Vegetable Oils from Adiabatic Bulk Modulus Based on Sound Velocity under Atmospheric Pressure;　2014/02
  ANNOUNCEMENT INFO.;　Proceedings of 5th Asian Tribology Conference ASIATRIB 2014, Jaypee Hotal & convention Centre, Agra, India, 17-20 February, 2014, 1-3
  AUTHOR;　Nobuyoshi Ohno, Hirohito Mori, Toshifumi Mawatari, Bo Zhang, Bunji Ono, Sobahan Mia
  
• A study of AlN coated insulation dot electrostatic chuck by plasma sputtering;　2013/10
  ANNOUNCEMENT INFO.;　, 1-2
  AUTHOR;　Tomohiro Furukawa, Ryoichi Momoe, Bo Zhang, Toshifumi Mawatari
  
• Study on High Pressure Properties of Botryococcus braunii Oil;　2013/10
  ANNOUNCEMENT INFO.;　, 1-2
  AUTHOR;　Kotarou Tajima, Akihiko Nakashima, Yuta Tashiro, Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno, Mayumi Ozeki, Hitoshi Kuno, Satoshi Bunne, Hiroaki Fukuda, Makoto Watanabe
  
• Study on High Pressure Density and Viscosity of Ionic Liquids for Vacuum Lubrication;　2013/10
  ANNOUNCEMENT INFO.;　, 1-2
  AUTHOR;　Akihiko Nakashima, Kotaro Tajima, Yuta Tashiro, Kohei Haikata, Keiyu Morisaki, Ryoma Tanaka, Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno
  
• In-situ observation of touch-down of bearing surface in hard disk drivers;　2013/10
  ANNOUNCEMENT INFO.;　, 1-2
  AUTHOR;　Seiya Ishida, Tetsuya Kitamura, Toshifumi Mawatari, Bo Zhang
  
• Wear Resistance of Plasma-Sprayed Alumina Coatings under Water Lubrication;　2013/10
  ANNOUNCEMENT INFO.;　, 1-2
  AUTHOR;　Tatsuto Yamashita , Bo Zhang, Toshifumi Mawatari, Hiroya Fukamachi
  
• Effect of Hertzian Contact Pressure on Shear Stress Distribution of EHL Oil Films;　2013/09
  ANNOUNCEMENT INFO.;　Proceedings of 40th Leeds-Lyon Symposium on Tribology & Tribochemistry Forum 2013, 6-6
  AUTHOR;　Toshifumi Mawatari, Akira Nakajima, Bo Zhang, Nobuyoshi Ohno, Motohiro Kaneta
  
• High Pressure Behavior of Oil Extracted from Green Alga Botryococcus braunii;　2013/09
  ANNOUNCEMENT INFO.;　Proceedings of 40th Leeds-Lyon Symposium on Tribology & Tribochemistry Forum 2013, 161-161
  AUTHOR;　Bo Zhang, Toshifumi Mawatari, Nobuyoshi Ohno, Kotarou Tajima, Mayumi Ozeki, Hitoshi Kuno, Satoshi Bunne, Hiroaki Fukuda, Makoto Watanabe
  
• Thermal Conductivity of Lubricating Oil under Elliptical Contact and its Effect on Shear Stress Distribution of EHL Oil Films;　2013/09
  ANNOUNCEMENT INFO.;　Proceedings of World Tribology Congress 2013, Torino, Italy, September 8 – 13, 2013, 1-4
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Akira Nakajima, Nobuyoshi Ohno, Motohiro Kaneta
  
• High Presssure Rheology of Ionic Liquids Based on Phase Diagram;　2013/09
  ANNOUNCEMENT INFO.;　Proceedings of World Tribology Congress 2013, Torino, Italy, September 8-13, 2013, 1-4
  AUTHOR;　Nobuyoshi Ohno, Toshifumi Mawatari, Bo Zhang, Akira Nakajima, Motohiro Kaneta
  
• Non-Newtonian Thermal Elastohydrodynamic Lubrication Analysis of Perfluoropolyether Fluids with High Density;　2013/05
  ANNOUNCEMENT INFO.;　Proceedings of 2013 STLE Annual Meeting & Exhibition, May 5-9, 2013, Detroit Marriott at the Renaissance Center, Detroit, Michigan, USA, 1-3
  AUTHOR;　Toshifumi Mawatari, Nobuyoshi Ohno, Motohiro Kaneta, Petr Šperka, Ivan Krupka,Martin Hartl
  
• Lubrication Regime Transition Analysis based on Non-Newtonian Thermal Elastohydrodynamic Lubrication under Elliptical Contact: Traction and Film Thickness Behavior;　2013/05
  ANNOUNCEMENT INFO.;　Proceedings of 2013 STLE Annual Meeting & Exhibition, May 5-9, 2013, Detroit Marriott at the Renaissance Center, Detroit, Michigan,USA, 1-3
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Akira Nakajima, Nobuyoshi Ohno, Motohiro Kaneta
  
• Shear Stress Analysis of EHL Oil Films based on Thermal EHL Theory under Elliptical Contact - Effect of Entrainment Velocity -;　2012/09
  ANNOUNCEMENT INFO.;　, 129-130
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno, Akira Nakajima
  
• Traction Coefficient of EHL in Consideration of Film Strength;　2012/09
  ANNOUNCEMENT INFO.;　, 131-132
  AUTHOR;　Bo Zhang, Toshifumi Mawatari
  
• Effect of Hertzian Contact Pressure on Shear Behavior of EHL Oil Films;　2012/05
  ANNOUNCEMENT INFO.;　, 95-96
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Nobuyoshi Ohno and Akira Nakajima
  
• Evaluation of High Pressure Density Property in Oily High Bulk Modulus Fluid;　2012/05
  ANNOUNCEMENT INFO.;　, 273-274
  AUTHOR;　Mitsuo Kurosaki, Koutarou Tajima, Tosifumi Mawatari, Bo Zhang, Nobuyoshi Ohno, Akira Nakajima, Toshiyuki Tsubouchi
  
• The Possibility of Tensile Stress in EHL Film and Its Importance;　2012/05
  ANNOUNCEMENT INFO.;　, 93-94
  AUTHOR;　Bo Zhang, Toshifumi Mawatari
  
• Effects of Slip Ratio and Roller Combination on Durability of Thermally Sprayed WC Cerment Coating under Dry Rolling/Sliding Contact Conditions;　2012/03
  ANNOUNCEMENT INFO.;　, 128, 1, 211-212
  AUTHOR;　Toshifumi Mawatari, Yusuke Araki, Ryosuke Inokuchi, Bo Zhang, Akira Nakajima, Mitsugu Yoshida
  
• Effects of Base Oil and Thickener of Space Grease on States of Oil Film Formation in Ball Screw;　2012/03
  ANNOUNCEMENT INFO.;　, 128, 1, 213-214
  AUTHOR;　Kazumasa Sunagawa, Toshifumi Mawatari, Bo Zhang, Akira Nakajima, Nobuyoshi Ohno
  
• Study on Wear Resistance Property of Materials for Artificial Hip Joints;　2012/03
  ANNOUNCEMENT INFO.;　, 128, 1, 223-224
  AUTHOR;　Yusuke Araki, Bo Zhang, Toshifumi Mawatari, Akira Nakajima
  
• Effect of Shear Behaviour of EHL Oil Films on Shear Stress Distribution;　2011/10
  ANNOUNCEMENT INFO.;　Proceedings of International Tribology Conference Hiroshima 2011, 1-1
  AUTHOR;　Toshifumi Mawatari, Bo Zhang, Akira Nakajima
  
• Oil Film Formation and Running Performance in Ball Screw Lubricated with Greases for Space Applications;　2011/10
  ANNOUNCEMENT INFO.;　Proceedings of International Tribology Conference Hiroshima 2011, 1-1
  AUTHOR;　Toshifumi Mawatari, Toru Nakamura, Kazumasa Sunagawa, Bo Zhang, Akira Nakajima, Nobuyoshi Ohno
  
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Effect of Thermal Conductivity -;　2011/05
  ANNOUNCEMENT INFO.;　, 99-100
  AUTHOR;　Toshifumi Mawatari, Bo Zhang and Akira Nakajima
  
• Effect of Shear Behaviour of Oil Films on Traction Characteristics under EHL Conditions;　2011/03
  ANNOUNCEMENT INFO.;　, 118-1, 363-364
  AUTHOR;　Yusuke IDE, Toshifumi MAWATARI, Bo ZHANG, Akira NAKAJIMA
  
• Durability of Bearing Steel Roller under Rolling/ Sliding Contact Conditions - Effect of Combination of Surface Roughness -;　2011/03
  ANNOUNCEMENT INFO.;　, 118-1, 365-366
  AUTHOR;　Shinya SOEJIMA, Toshifumi MAWATARI, Zhang BO, Akira NAKAJIMA
  
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Relation between Slip Ratio and Shear Rate distribution -;　2010/09
  ANNOUNCEMENT INFO.;　, 319-320
  AUTHOR;　Toshifumi MAWATARI, Bo ZHANG, Akira NAKAJIMA
  
• Effect of Mating Surface Roughness on Durability on Thermally Sprayed Cermet Coating under Dry Rolling Contact Conditions;　2010/09
  ANNOUNCEMENT INFO.;　, 81-82
  AUTHOR;　Ryosuke INOGUCHI, Yusuke ARAKI, Toshifumi MAWATARI, Bo ZHANG, Akira NAKAJIMA
  
• Oil Film Formation and Running Performance in Ball Screw Lubricated with Advanced Greases for Space Application;　2010/09
  ANNOUNCEMENT INFO.;　, 295-296
  AUTHOR;　Kazumasa SUNAGAWA, Toru NAKAMURA, Toshifumi MAWATARI, Bo ZHANG, Akira NAKAJIMA
  
• Ball-on-Disk Test of Si3N4 Ball against Iron and Copper Disk in Conjunction with Electrolyzing;　2010/09
  ANNOUNCEMENT INFO.;　, 475-476
  AUTHOR;　Wenzhuo MA, Kazuhiro NAKAMURA, Bo ZHANG, Toshifumi MAWATARI, Akira NAKAJIMA
  
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Effect of Shear Velocity Distribution -;　2010/05
  ANNOUNCEMENT INFO.;　, 185-186
  AUTHOR;　Toshifumi MAWATARI, Akira NAKAJIMA
  
• Shear Stress Analysis of EHL Oil Film under Elliptical Contact Condition(Effect of Shear Behaviour of Lubricating Oil);　2010/03
  ANNOUNCEMENT INFO.;　, 33-34
  AUTHOR;　
  
• Durability of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions (Effect of Mating Surface Roughness);　2009/10
  ANNOUNCEMENT INFO.;　, 95-96
  AUTHOR;　
  
• Effect of Slip Ratio on Rolling Contact Fatigue of Bearing Steel Roller under Partial EHL Conditions;　2009/10
  ANNOUNCEMENT INFO.;　, 97-98
  AUTHOR;　
  
• Shear Stress Analysis of EHL Oil Films Based on Thermal EHL Theory under Elliptical Contact;　2009/09
  ANNOUNCEMENT INFO.;　Proceedings of World Tribology Congress 2009 (Kyoto, Japan), 552
  AUTHOR;　T. Mawatari and A. Nakajima
  
• Effects of Substrate Hardness and Coating Thickness on Durability of Thermally Sprayed WC Cerment Coating under Dry Rolling/Sliding Contact Conditions;　2009/09
  ANNOUNCEMENT INFO.;　Proceedings of World Tribology Congress 2009 (Kyoto, Japan), 919
  AUTHOR;　A. Nakajima and T. Mawatari
  
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory under Elliptical Contact - Effect of Inlet Temperature -;　2009/05
  ANNOUNCEMENT INFO.;　, 115-116
  AUTHOR;　
  
• Effect of Outer Ring Deformation on Oil Film Formation in Angular Contact Ball Bearing;　2009/05
  ANNOUNCEMENT INFO.;　, 9-10
  AUTHOR;　
  
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory - In the case of Elliptical Contact Condition -;　2008/09
  ANNOUNCEMENT INFO.;　, 289-290
  AUTHOR;　
  
• Rolling Contact Fatigue Strength of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions -Effects of Coating Thickness and Substrate Hardness-;　2008/09
  ANNOUNCEMENT INFO.;　, 329-330
  AUTHOR;　
  
• Effect of Axial Load on Ball Motion and Oil Film Formation in Ball Screw;　2008/09
  ANNOUNCEMENT INFO.;　, 325-326
  AUTHOR;　
  
• Shear Stress Analysis of EHL Oil Film based on Thermal EHL Theory - Effect of Inlet Oil Temperature -;　2008/05
  ANNOUNCEMENT INFO.;　, 173-174
  AUTHOR;　
  
• Rolling Contact Fatigue Strength of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions - Effect of Rolling-Sliding Conditions -;　2008/05
  ANNOUNCEMENT INFO.;　, 149-150
  AUTHOR;　
  
• 無潤滑条件下におけるWCサーメット溶射皮膜の転がり疲れ強度(滑り率の影響）;　2008/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 熱弾性流体潤滑理論に基づくEHL油膜のせん断応力解析－滑り率の影響－;　2007/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 合成荷重下におけるアンギュラ玉軸受の玉の運動挙動と油膜形成状態;　2007/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 軸受鋼の転がり疲れに及ぼすトラクション油の影響－熱弾性流体潤滑理論に基づくEHL油膜のせん断応力解析－;　2007/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 無潤滑条件下におけるＷＣサーメット溶射皮膜の転がり疲れ強度－下地加工と皮膜厚さの影響－;　2007/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ボールねじの油膜形成状態に及ぼすアキシアル荷重の影響;　2007/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 無潤滑条件下におけるWCサーメット溶射皮膜の耐久性 (皮膜厚さと下地加工の影響);　2007/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 浸炭焼入れ鋼ローラの転がり疲れに及ぼす滑り率の影響;　2007
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Study on Rolling Contact Fatigue of Bearing Steel Roller Lubricated with Traction Oil under High Slip Ratio Conditions;　2006/10
  ANNOUNCEMENT INFO.;　The 3rd Asia Int. Conf. on Tribology, Kanazawa 2006
  AUTHOR;　T. Mawatari, A. Nakajima
  
• Durability of Thermally Sprayed WC Cermet Coating under Dry Rolling Contact Conditions;　2006/10
  ANNOUNCEMENT INFO.;　The 3rd Asia Int. Conf. on Tribology, Kanazawa 2006
  AUTHOR;　A. Nakajima, T. Mawatari
  
• 無潤滑条件下におけるWCサーメット溶射皮膜の耐久性(母材硬さと下地加工の影響）;　2006/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 鉱油潤滑条件下におけるボールねじの油膜形成状態と玉の運動挙動;　2006/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• The States of Oil Film Formation and Ball Motion in Ball Screw with Retainers;　2006/07
  ANNOUNCEMENT INFO.;　5th International Conference on Mechanics and Materials in Design
  AUTHOR;　A. Nakajima, T. Mawatari
  
• 軸受鋼の転がり疲れに及ぼす相手面粗さの影響;　2006/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 無潤滑条件下におけるＷＣサーメット溶射皮膜の転がり疲れ強度;　2006/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 転がり接触下における超硬ローラの耐久性に関する研究;　2005/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• アンギュラ玉軸受の玉の運動挙動と油膜形成状態－潤滑油が低粘度鉱油の場合－;　2005/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 軸受鋼の転がり疲れに及ぼすトラクション油の影響－滑り率による寿命比較－;　2005/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Ball Motion and Oil Film Formation in Angular Contact Ball Bearing under Combined Load;　2005/06
  ANNOUNCEMENT INFO.;　International Conference on Manufacturing, Machine Design and Tribology
  AUTHOR;　A. Nakajima, T. Mawatari
  
• Effect of substrate surface finish on durability of thermally sprayed WC cermet coating in rolling-sliding contact;　2005/05
  ANNOUNCEMENT INFO.;　International Tribology Conference KOBE 2005
  AUTHOR;　D. M. Nuruzzaman, A. Nakajima, T. Mawatari
  
• Rolling contact fatigue life of bearing steel rollers lubricated with traction oil corresponding to ISO VG32;　2005/05
  ANNOUNCEMENT INFO.;　International Tribology Conference KOBE 2005
  AUTHOR;　T. Mawatari, A. Nakajima
  
• 軸受鋼ローラの転がり疲れに及ぼす転がり－滑り条件の影響（続報）－熱弾性流体潤滑理論による検討－;　2004/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ボールねじの油膜形成状態に及ぼすねじ軸回転方向の影響;　2004/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Effect of Slip Ratio on Rolling Contact Fatigue of Bearing Steel Rollers Lubricated with Traction Oil;　2004/09
  ANNOUNCEMENT INFO.;　IUTAM Symposium on Elastohydrodynamics and Microelastohydrodynamics
  AUTHOR;　A. Nakajima, T. Mawatari
  
• Rolling Contact Fatigue Life of Bearing Steel Rollers Lubricated with Low Viscosity Traction Oil;　2004/09
  ANNOUNCEMENT INFO.;　31st Leeds-Lyon Symposium on Tribology
  AUTHOR;　A. Nakajima, T. Mawatari
  
• 軸受鋼ローラの転がり疲れに及ぼす転がり－滑り条件の影響－低粘度トラクション油による潤滑油の場合－;　2004/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 部分EHL条件下でのWCサーメット溶射皮膜の転がり疲れ強度－S45C高周波焼入れ材とS45C調質材の寿命比較－;　2004/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 軸受鋼ローラの転がり疲れ（TEHL理論による検討）;　2004/04
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Invited Lecture, Special Lecture

• Study on Non-Newtonian Thermal EHL Analysis;　2013/10
  ANNOUNCEMENT INFO.;　, 1-2
  AUTHOR;　
  
• EHL (Elasto-Hydrodynamic Lubrication) Theory and its Application・Study on Thermal EHL analysis;　2013/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Toshifumi Mawatari