1. Department of Robotics and Mechatronics, Korea Institute of Machinery and Materials, Daejeon, South Korea
2. Department of Mechanical Engineering (Integrated Engineering), Kyung Hee University, Gyeonggi-do, South Korea
3. Department of Smart Industrial Machine Technologies, Korea Institute of Machinery and Materials, Daejeon, South Korea
4. Department of Reliability Assessment, Korea Institute of Machinery and Materials, Daejeon, South Korea