摘要
脉冲涡流检测是近些年涌现出的一种新型无损检测技术。针对铁磁性材料的脉冲涡流检测,本文提出了一种组合磁化的方法。通过附加一个直流磁场对试件磁化,改变材料的磁导率,在加载脉冲激励时,可获得更高的检测灵敏度。理论分析和实验证明了组合磁化对检测灵敏度产生的影响。
Pulsed eddy current （PEC） testing is a new type of non-destructive testing techniques emerging in recent years. For ferromagnetic materials pulsed eddy current testing, a combined magnetization method was presented. A DC magnetic field is added to the specimen to change the magnetic permeability of the material inspected, to achieve higher detection sensitivity when loading pulsed excitation. Theoretical analysis and experimental results show the effect of the combined magnetization on detection sensitivity.
出处
《宇航计测技术》
CSCD
2016年第4期23-26,共4页
Journal of Astronautic Metrology and Measurement
关键词
组合磁化
脉冲涡流
灵敏度
Combined magnetization
Pulsed eddy current
Sensitivity
