Magnetovisual method for monitoring thermal demagnetization of permanent magnets used in magnetostrictive actuators  

作　　者：J.Kaleta P.Wiewiórski 

机构地区：[1]Institute of Materials Science and Applied Mechanics, Wroclaw University of Technology, Smoluchowskiego Str. 2550-372 Wrocdaw, Poland

出　　处：《Journal of Rare Earths》2014年第3期236-241,共6页稀土学报（英文版）

摘　　要：The design and measuring potential of the latest generation of the magnetic scanner called Magscanner-Maglab System （MMS） was presented. It enabled the fast acquisition of 3D signals from magnetic sensors and their visualization as digitalized mag- netic images. This system was used for monitoring of a thermal demagnetization process of permanent magnets. The original method and measurement devices were capable for examination of magnetic, mechanical and thermal defects in cylindrical rods made of NdFeB and non-rare earth components. Effectiveness of the method and device was tested for the reference demagnetized magnet dedicated for magnetostrictive actuators.The design and measuring potential of the latest generation of the magnetic scanner called Magscanner-Maglab System （MMS） was presented. It enabled the fast acquisition of 3D signals from magnetic sensors and their visualization as digitalized mag- netic images. This system was used for monitoring of a thermal demagnetization process of permanent magnets. The original method and measurement devices were capable for examination of magnetic, mechanical and thermal defects in cylindrical rods made of NdFeB and non-rare earth components. Effectiveness of the method and device was tested for the reference demagnetized magnet dedicated for magnetostrictive actuators.

关 键 词：permanent magnets thermal and shock demagnetization stereographic projection magnetovision camera rare earths 

分 类 号：TM271[一般工业技术—材料科学与工程]