| Year | Career | Location |
| 2000 ~ | Professor | Mechanical Eng., Hanyang Univ. |
| 1998 ~ 1999 | Visiting Professor | Univ. of California, Irvine |
| 1995 ~ 2000 | Associate Professor | Mechanical Eng., Hanyang Univ. |
| 1990 ~ 1995 | Assistant Professor | Mechanical Eng., Hanyang Univ. |
| 1989 | Lecturer | Hanyang Univ. & Hankuk Aviation Univ. |
| 1986 ~ 1989 | Visiting Professor | The State Univ. of New York, Buffalo |
| 1984 ~ 1986 | Ph.D. Degree | The State Univ. of New York, Buffalo |
| 1982 ~ 1984 | M.S. Degree | The State Univ. of New York, Buffalo |
| 1978 ~ 1982 | B.S. Degree | Machine Design & Production Eng., Hanyang Univ. |
