摘要
为了实现磁记忆检测技术在列车轮对检测方面的应用,需要对轮对所用材料的力-磁效应进行研究。以25CrMo4合金结构钢为例,对其板状试件进行准静态拉伸,通过专用的磁记忆信号采集仪器记录板件在不同载荷下的磁记忆信号,提取各载荷下的信号的常用信号特征,分析了其应力与磁记忆信号的关系。实验结果表明,随着载荷的增加,磁记忆信号随着实验试件的载荷增加而有较大影响。
The safety of high-speed running trains is a requisite component of studies on rail vehicles. Studying the stress-magnetic effect of the materials used in wheels is necessary for the application of magnetic memory detection technology in the detection of wheel pairs. In this work, the 25 CrMo4 alloy structural steel is taken as an example. Plate-like 25 CrMo4 specimens are subjected to the quasistatic tensile test. The magnetic memory signal of the board under different loads is recorded by a dedicated magnetic memory signal acquisition instrument to extract common signal characteristics under each load, and the relationship between stress and magnetic memory signal is analyzed. Experimental results show that the influence of the magnetic memory signal on the experimental specimen intensifies as load increases.
作者
毕贞法
孔乐
BI Zhenfa;KONG Le(School of Railway Transportation, Shanghai Institute of Technology, Shanghai 201418, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2019年第8期1524-1529,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51405303)
上海高校选拔培养优秀青年教师科研专项基金项目(ZZyy15110)
上海应用技术大学人才引进基金项目(YJ2014-17)
关键词
高速列车
25CrMo4钢
准静态拉伸
金属磁记忆检测
力-磁效应
法向分量
切向分量
梯度
high-speed train
25CrMo4 steel
quasistatic strength
metal magnetic memory detection
stress-magnetic effect
normal component
tangential composition
gradient
