1. Mechanics & Electronics Research Institute, Fukuoka Industrial Technology Center
2. Institute of Mechanical Systems Engineering, National Institute of Advanced Industrial Science and Technology (AIST)
3. Independent Administrative Institution, National Institute of Technology and Evaluation
4. Department of Mechanical Engineering, Faculty of Science and Engineering, Saga University
5. Technology Research & Development Department, Takada Corporation
6. Reserch Laboratory, Kuroki Kogyosho Co., Ltd
7. Technical Div., Nippon Steel Bolten Co., Ltd.