Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Experimental Investigation to Establish Correlation Between Specific Film Thickness and Vibration Signals in Spur Gear System

스퍼 기어의 진동 신호와 비 유막 두께(Specific Film Thickness)의 상관관계에 관한 실험적 연구

  • Kim, Jong Sik (Dept. of Mechanical Engineering, Inha Univ.) ;
  • Amarnath, M. (Dept. of Mechanical Engineering, Inha Univ.) ;
  • Lee, Sang Kwon (Dept. of Mechanical Engineering, Inha Univ.)
  • Received : 2014.06.23
  • Accepted : 2014.07.15
  • Published : 2014.09.01
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Abstract

Gears are critical elements in automobiles, and their use as power transmitting machine elements in engineering applications is quite extensive. In the areas of contact between gear teeth, the condition of a gear is likely to deteriorate due to contact fatigue, wear, material defects, lubrication failure, etc. Thus, it is necessary to monitor its condition to ensure smooth power transmission. Gear teeth deterioration causes failures such as abrasive wear, scuffing, pitting, and spalling. These failures lead to a higher level of vibration signals in the gear system. This paper presents the results of an experiment on the surface fatigue wear of a spur gear system. The correlation between the estimated specific film thickness, statistical parameter of the vibration signals, and Stribeck curve was considered in this study.

기어의 구동은 여러 기계요소에서 동력전달을 가능하게 해주는 가장 중요한 요소이다. 이러한 기어 접촉면에서의 상태는 마모, 재료의 변형 그리고 윤활 상태에 따라 크게 좌우되며, 이러한 상태 변화는 기어의 수명에 큰 영향을 준다. 따라서, 이러한 상태 진단에 대한 해법은 원활한 구동을 위한 필수요소이다. 기어의 상태 변화는 연마 마모(Abrasive wear), 점식 (Pitting), 스커핑(Scuffing), 스폴링(Spalling) 등을 유발하며, 이러한 마모들은 기어로부터 발생하는 진동 레벨을 상승시킨다. 본 연구에서는 스퍼 기어를 장착한 기어 박스를 이용한 실험적 연구를 통해 기어의 표면 피로 마모를 평가하기 위해 진동 신호로부터 구해진 통계적 변수들과 Stribeck Curve 와의 상관관계를 검증하였다.

Keywords

References

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