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Study on NDT Fault Diagnosis of the Ball Bearing under Stage of Abrasion by Infrared Thermography

마모 단계의 볼 베어링에 대한 적외선 열화상 비파괴 결함 진단 연구

  • 서진주 (전북대학교 기계시스템공학부) ;
  • 홍동표 (전북대학교 기계시스템공학부) ;
  • 김원태 (공주대학교 기계자동차공학부)
  • Received : 2011.06.23
  • Accepted : 2011.12.08
  • Published : 2012.02.28

Abstract

For fault detection about the abrasion stage of rotational machineries under the dynamic loading conditions unlike the traditional diagnosis method used in the past decade, the infrared thermographic method with its distinctive advantages in non-contact, non-destructive, and visible aspects is proposed. In this paper, by applying a rotating deep-grooved ball bearing, passive thermographic experiments were conducted as an alternative way to proceeding the traditional fault monitoring on spectrum analyzer. As results, the thermographic experiment was compared with the traditional vibration spectrum analysis to evaluate the efficiency of the proposed method. Based on the results obtained as NDT, the temperature characteristics and abnormal fault detections of the ball bearing according to the abrasion stage were analyzed.

기존 진단법과 달리 동적 하중조건하 회전체의 마모 단계에 따른 결함 진단을 위해 비접촉, 비파괴의 적외선 열화상 기법이 제안된다. 본 연구에서는 시험시편인 단열 깊은 홈의 볼 베어링을 설정하여 기존의 스펙트럼 분석과 같은 고장탐지법에 대한 대안으로써 수동형 열화상시험이 수행되었다. 본 연구로부터, 적외선 열화상시험은 신뢰성을 평가하기 위해 기존 진동 스펙트럼 분석시험과 비교, 분석되었다. 연구의 비파괴시험의 결과로써, 마모 단계에 따른 볼 베어링의 온도 특성이 분석되었다.

Keywords

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Cited by

  1. Comparison of FEA with Condition Monitoring for Real-Time Damage Detection of Bearing Using Infrared Thermography Techniques vol.35, pp.3, 2015, https://doi.org/10.7779/JKSNT.2015.35.3.185