Kyushu University Academic Staff Educational and Research Activities Database
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Hiroyoshi Tanaka Last modified date:2017.05.30

Assistant Professor / Machine Design and Bionic Systems
Department of Mechanical Engineering
Faculty of Engineering


Graduate School
Undergraduate School


E-Mail
Phone
092-802-3075
Fax
092-802-3075
Academic Degree
BPh
Field of Specialization
tribology
Outline Activities
Based on the rolling sliding contact fatigue of mechanical rolling elements and DLC coating film, effects of hydrogen on mechanical elements have been investigated. These will help to provide practical education and activation for work with business region.
Research
Research Interests
  • Friction and wear properties of O-ring used in hydrogen facilities
    keyword : Hydrogen, O-ring, rubber, deformation, failure
    2014.04~2018.03.
  • Friction and wear of DLC films in hydrogen
    keyword : DLC, hydrogen, friction, wear
    2012.05.
  • Friction and wear in hydrogen gas, Rolling contact fatigue in hydrogen, peameation properties of hydrogen into materials under high pressure hydrogen.
    keyword : sliding contact, friction and wear, rolling contact, fatigue life, high pressure hydrogen, peameation properties of hydrogen, surface analysis
    1989.04In order to elucidate the performance of mechanical elements in hydrogen environment, sliding friction test and rolling fatigue test are conducted..
  • Lubrication performance of greases
    keyword : grease, friction and wear, rolling contact fatigue
    2010.04.
Current and Past Project
  • Argonne national laboratory has contributed to the wind program funded by U.S. Department of Energy, my research was in the part of this program. Purpose of this study is rolling contact fatigue in wind turbines system, especially in micropitting on gears in wind turbines.
Academic Activities
Papers
1. Hiroyoshi Tanaka, Effect of Environmental Gas on Surface Initiated Rolling Contact Fatigue, Tribology Online, 8, 1, 2013.01.
2. Effects of Exposure to 40MPa Hydrogen on DLC Films.
Presentations
1. 田中 宏昌, Permeation of hydrogen into steel under rolling contact in various gas with additive free oils, Tribology frontier 2016, 2016.11.14.
2. 田中 宏昌, Effects of lubricant additives on hydrogen permeation under rolling contact, Tribology frontier 2015, 2015.10.27.
3. 田中 宏昌, Hydrogen Permeation through Oxide Layer on Steels, ITC2015, 2015.09.19.
4. 田中 宏昌, Joichi Sugimura, Suguru Ikeda, Different failure modes in rolling contact of steel under grease lubrication, STLE tribology frontier 2014, 2014.10.28.
5. 田中 宏昌, Joichi Sugimura, Taiki komatsu, Effects of environmental gas on decomposition of lubricant and hydrogen generation at nascent iron surface, Asiatrib2014, 2014.02.12.
6. 田中 宏昌, EFFECTS OF HYDROGEN ON STRUCTURAL CHANGE AND ROLLING CONTACT FATIGUE OF STEEL, Asiatrib2014, 2014.02.12.
7. 田中 宏昌, Rolling contact fatigue test with greases in hydrogen environment, WTC2013, 2013.09.10.
8. 田中 宏昌, PERMEATION OF HYDROGEN INTO STEEL IN SIMPLE CYCLIC CONTACT TESTS, ISFF7, 2013.04.11.
9. Hiroyoshi Tanaka, Rolling Contact Fatigue under Grease Lubrication in Hydrogen, IJTC2012, 2012.10.08.
10. Rolling fatigue in hydrogen gas environment.
Awards
  • Effect of Environment Gas on Surface Initiated Rolling Contact Fatigue,Tribology Online, 8,1, (2013) pp.90-96.
Educational
Other Educational Activities
  • 2004.09.
Social
Professional and Outreach Activities
Support of post-doctral researchers for their experimental works.