1. Faculty of Mechanical Engineering and Management; Institute of Mechanical Technology, Poznan University of Technology; Pl. Marii Skłodowskiej-Curie 5 Poznań 60-965 Poland
2. Department of Mechanical Engineering; Chung Yuan Christian University; Chung-Li Taiwan
3. Chung Yuan Christian University; R&D Ctr Mold & Molding Technology; Chung-Li Taiwan