Automotive technology has developed rapidly and is becoming the intensive of cutting edge technology. For this reason, Automotive are used not only as a means of transportation, but also as a private and leisure spaces. The driver wants to keep quiet even if the car is used for a long time. NVH should be reduced because it is caused by mechanical defects and aging. In this study, it was presented that a seven-step procedure for failure diagnosis and repair to reduce noise/vibration. NVH was diagnosed by comparing the result of the rotator order tracking analysis with the problem frequency. It was possible to accurately analyze the cause of noise and vibration, also it coud identify the location, and repair that.

Abstract
1. 서 론
2. 측정장치 및 방법
    2.1 측정장치
    2.2 측정이론 및 진단방법
    2.3 고장진단 절차
3. 결과 및 고찰
    3.1 소음 · 진동 진단 결과
4. 결 론
후 기
References

• 유종구(Hyundai Motor Co.) | Jonggoo Yoo
• 유우수(Hyundai Motor Co.) | USu You
• 전유재(Professor, Dept. of Medical Rehabilitation Science, Yeoju Institute of Technology) | Yujae Jeon Corresponding author