Toshikazu Fujino
Tokyo University of Marine Science and Technology
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Publication
Featured researches published by Toshikazu Fujino.
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology | 2009
Toshikazu Fujino; Katsumi Iwamoto; N Akuzawa; Kentaro Tanaka
Abstract In recent years, there have been advances in techniques for improving sliding performance by using coated films possessing superior tribological properties to reduce failure of mechanical elements. Those techniques are often used under severe conditions, such as elastohydrodynamic lubrication (EHL). In this paper, to devise the optimum design of a coated film with an interlayer, the stresses generated in such a coated film are analysed by using a three-dimensional numerical analysis method, and the strength of the film is evaluated numerically. As a result, it is shown that, when the ratio of the modulus of elasticity of the coated film, Ec, to that of the substrate, Es, is 0.50, it is preferable that the thicknesses of the coated film and the interlayer be larger, and that the modulus of elasticity of the interlayer range from that of the coated film to that of the substrate. Furthermore, it is shown that in the case of Ec/Es=2.00, it is preferable to have a thicker interlayer irrespective of the values of the moduli of elasticity of the coated film and the interlayer.
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology | 2010
Toshikazu Fujino; Katsumi Iwamoto; K Tanaka; Masajiro Abe
Abstract In recent years, there have been advances in techniques for improving sliding performance by using coated films possessing superior tribological properties to reduce failure of mechanical elements. Those techniques are often used under severe conditions, such as elastohydrodynamic lubrication (EHL). In this paper, to devise the optimum design of a coated film with a gradient layer, the stresses generated in such a coated film are analysed by using a three-dimensional numerical analysis method, and the strength of the film is evaluated numerically. As a result, it is shown that when the ratio of the modulus of elasticity of the coated film, Ec, to that of the substrate, Es, is 0.50, it is preferable to select the gradient layer in which the variation of modulus of elasticity decreases gradually approaching from the substrate to the coated film in the depth direction. Furthermore, it is shown that in the case of Ec/Es=2.00, it is preferable to select the gradient layer varying linearly the modulus of elasticity into the gradient layer.
Tribology International | 2007
Toshikazu Fujino; Katsumi Iwamoto; Kentaro Tanaka; Masayuki Shima
The Proceedings of Conference of Kanto Branch | 2018
Tian Miao; Kenichiro Toyoda; Toshikazu Fujino; Takashi Sugawara; Tatsuhiro Jibiki
Mechanical Engineering Letters | 2018
Yao Zhu; Toshikazu Fujino; Tatsuhiro Jibiki
Journal of The Japan Institute of Marine Engineering | 2018
Kiriko Owada; Toshikazu Fujino; Tatsuhiro Jibiki
Journal of Jsee | 2018
Michihiro Takiguchi; Shigeyasu Fujiwara; Toshikazu Fujino
The Proceedings of Mechanical Engineering Congress, Japan | 2017
Michihiro Takiguchi; Shigeyasu Fujiwara; Toshikazu Fujino
The Proceedings of Conference of Hokuriku-Shinetsu Branch | 2017
Mitsuki Tsuchiya; Kenji Yanagisawa; Toshikazu Fujino; Masajiro Abe
The Proceedings of Conference of Chugoku-Shikoku Branch | 2017
Michihiro Takiguchi; Shigeyasu Fujiwara; Toshikazu Fujino; Masajiro Abe; Akira Kamide
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