Magnetic evaluation of fatigue damage in train axles without artificial excitation

被引：15
作者：
School of Aerospace, Tsinghua University, Beijing 100084, China [1 ]
不详 [2 ]
机构：
[1] School of Aerospace, Tsinghua University
[2] Department of Mechanical Engineering, Tsinghua University
来源：
Insight Non Destr Test Cond Monit | 2006年 / 6卷 / 342-345期
关键词：
Nondestructive examination;
D O I：
10.1784/insi.2006.48.6.342
中图分类号：
学科分类号：
摘要：
The metal magnetic memory (MMM) method, based on the magnetomechanical effect, provides an effective and simple approach for fatigue evaluation of train axles in laboratory tests as well as in service on railway systems. In lab tests carried out to analyse the fatigue process, the distribution of the surface magnetic field on axle model specimens under different cycle numbers (N) was investigated. Good correlation between resulting fatigue level and MMM signals has been demonstrated. In the M (magnetic)-N (cycle) curve derived from the experimental data, three stages corresponding to the fatigue process can be clearly distinguished. A similar situation was found in the practical inspections of train axles in service. This technique could be further studied for fatigue evaluation.
引用
收藏
页码：342 / 345
页数：3
相关论文
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