东南大学学报（英文版）2019，Vol.35Issue(3)：310-317,8.DOI:10.3969/j.issn.1003-7985.2019.03.006
基于初始磁导率的滚动轴承内圈无损检测系统
Rolling contact fatigue nondestructive testing system for a bearing inner ring based on initial permeability
摘要
Abstract
Due to the fact that rolling contact fatigue is not easily detected,and residual life is not easily evaluated in the early stage of bearing life,a nondestructive testing method based on initial permeability is proposed.By analyzing the crack propagation mechanism,a fatigue state detection system based on differential signals is designed.A simulation model of the detection of the inner ring of the pulse signal is established by using the electromagnetic field simulation software.The effects of the height of the coil,the inner and outer diameter,the number of coil turns,the diameter and the height of the ferrite core of the probe on the differential value of the detection signal are simulated.The parameter combination of the maximum difference value of the signal is used as the structural size of the sensor,and the detection sensor is designed and fabricated.Moreover,the bearing fatigue test system is designed,and the bearing is tested.The results show that the system has good detection ability for rolling contact fatigue and verifies the mechanism and trend of crack propagation in the inner ring of the bearing.关键词
初始磁导率/无损检测/滚动接触疲劳Key words
initial permeability/nondestructive testing/rolling contact fatigue.分类
通用工业技术引用本文复制引用
代献泽,帅立国,刘杰..基于初始磁导率的滚动轴承内圈无损检测系统[J].东南大学学报（英文版）,2019,35(3):310-317,8.基金项目
The Science and Technology Innovation Committee(STIC) of Shenzhen (No.JCYJ20180306174455080). （STIC）
