摘要
基于静态磁场中的等效磁荷的观点,用等效点磁荷模型推导了钢丝绳断丝缺陷漏磁场数学模型.在平行丝钢丝绳模拟实验的基础上,讨论了影响断丝漏磁场检测信号的影响因素.
Based on the concept of equivalent magnetic charge in the magnetostatic field,a mathematical model for the magnetic leakage field due to broken wires in a wire rope is developed. Experimental results from a sample rope with parallel wires show that the model is correct. After an analysis of some factors affecting the leakage field,it is found that the field density decreases in theory with R4,R being the distance between the sensor and broken wires,and the peak-to-peak value of the field density tends to remain constant when the gap width of the fracture in the broken wires reaches a certain limit.
出处
《华中理工大学学报》
CSCD
北大核心
1993年第1期153-158,共6页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金资助项目
关键词
钢丝绳
断丝
漏磁场
数学模型
steel wire rope
leakage field due to broken wires
mathematical model
non-destructive test
