Park, Ji Su Cho, In Gyung Kong, Yejin Lee, Jong Won Bae, Jeong Hyeon Kim, Choong Hyun 2024-11-23T11:30:15Z 2024-11-23T11:30:15Z 2024-11-21 2024-10 2713-8011 https://pubs.kist.re.kr/handle/201004/151126 This study experimentally investigates the life of rolling bearings in electric vehicles under electrical erosion. The design and preparation of an electrical erosion simulation test rig, setting of accelerated life test conditions and test methods, and results of life analysis under electrical erosion are described. We selected a constant current as the acceleration factor for life under electrical erosion, and an electrical erosion life test was conducted using three current values. The bearing was determined to have failed when the root mean square value of the acceleration data from the bearing was 4 g or higher. Based on the test data, a formula to predict life under electrical erosion was developed and used to estimate life under electrical erosion when the bearing was exposed to a random current value. The Weibull distribution was used to estimate the life of the bearing under electrical erosion based on the results of the statistical analysis that used the accelerated life test data. The estimated values were presented considering the shape parameter, acceleration index for a constant current, and the uncertainty of the estimated life value. The acceleration indices for the shape parameter of the electrical erosion life data distribution and constant current were 3.391 and 0.776, respectively. The B10 life values were 51.7, 14.8, and 8.7 h when the supplied currents were 0.1, 0.5, and 1, respectively. This study provides empirical guidelines for predicting the life of ball bearings under electrical erosion. English 한국트라이볼로지학회 Estimation of Rolling Bearing Life under the Environmentof Electrical Erosion using Accelerated Life Test 가속수명시험법을 이용한 전식 환경에서의 구름 베어링 수명 평가 Article 10.9725/kts.2024.40.5.145 2 Tribology and Lubricants, v.40, no.5, pp.145 - 150 Tribology and Lubricants 40 5 145 150 N kci ART003135671 Accelerated life testing Reliability assessment Ball bearing Electrical erosion