The Magnetic Dipole Theory for Non-Destructive Testing in China
A survey of the generai situation and progress of the magnetic dipole theory research in China is given in this paper. These include the following contents: 1) Magnetic field of a magnetic dipole, a linear magnetic dipole of finite length and a strip magnetic dipole of finite length; 2) Magnetic force acting upon a magnetic particle; 3) The effect of magnetizing field orientation on the revelation of defects by magnetic particles; 4) Longitudinal magnetization of a rod, tube and cuboid steel component; 5) Magnetic leakage field yielded by a slot on the workpiece surface; 6) The analytic expressions for some results of classical experiments ( made by Japanese Society for NDI and Dr. F. F?rster ) ; 7) Theoretical explanation of some strange magnetic particle patterns ( around a square hole, near corners of a keyslot and over cylindrical surface of a pin with throughout hole ) and abnormal phenomena in magnetic NDT ( reversing of magnetic poles in a slot after discontinuation of magnetization, non-relevant magnetic particle indications along the lateral edges of a cuboid steel component magnetized longitudinally and along the base apex lines of a workpiece magnetized circumferentially ); 8) Seeking new electromagnetic law and conception for NDT; 9) The distribution of magnetic charges in a region on the plane; 10) Approximate theory for the ring standard specimens ( magnetic leakage field from a subsuface flaw ) and so on.
Magnetic dipole Theory NDT China
WeiChang ZHONG
Nanjing Gas Turbine Research Institute 47 Northern Central Road,Nanjing 210037, China
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
1973-1981
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）