1. Department of Mechanical Engineering, Graduate schoolKongju National University 1223-24, Cheonan-daero, Seobuk-gu Cheonan-si CHUNGCHEONGNAM-DO 31080, REPUBLIC OF KOREA
2. Division of Mechanical & Automotive EngineeringKongju National University 1223-24, Cheonan-daero, Seobuk-gu Cheonan-si CHUNGCHEONGNAM-DO 31080, REPUBLIC OF KOREA