- 2018/04 - 現在 Tohoku University New Industry Creation Hatchery Center Senior Research Fellow
- 2008/04 - 2010/03 東北大学 総長顧問
- 2006/11 - 2008/03 Tohoku University Executive Vice President for Research and International Affairs
- 2005/04 - 2008/03 Tohoku University Graduate School of Engineering Professor
- 2005/04 - 2006/11 Tohoku University Executive Director and Vice President for Research
- 2004/04 - 2005/03 Fracture and Reliability Research Institute, Graduate School of Engineering Professor, Director
- 2004/04 - 2005/03 School of Engineering, Tohoku University Associate Dean for Research
- 2002/04 - 2004/03 Tohoku University Councilor
- 1999/04 - 2004/03 Fracture Research Institute, Graduate School of Engineering, Tohoku University Professor, Director
- 1998/04 - 1999/03 Research Institute for Fracture Technology Graduate School of Engineering, Tohoku University Professor, Director
- 1996/02 - 1998/03 Research Institute for Fracture Technology Faculty of Engineering, Tohoku University Professor, Director
- 1989/03 - 1996/01 Research Institute for Fracture Technology Faculty of Engineering, Tohoku University Professor
- 1994/04 - 1994/09 Department of Nuclear Engineering Massachusetts Institute of Technology, USA Visiting Professor
- 1988/03 - 1989/02 Department of Mechanical Engineering II Faculty of Engineering, Tohoku University Professor
- 1983/09 - 1988/03 Research Institute for Strength and Fracture of Materials, Faculty of Engineering, Tohoku, University Associate Professor
- 1975/04 - 1983/09 Department of Engineering Science, Faculty of Engineering, Tohoku University Research Associate
- 1982/05 - 1983/08 Department of Metallurgy and Materials Engineering, University of Newcastle Upon Tyne, U.K. Visiting Scientist