The Developing Situation and Principles of the Metal Magnetic Memory Technology

Metal magnetic memory(MMM) technology is a new and scientific non-destructive testing technology.Compared with the other non-destructive testing technology,the MMM technology is more convenient,more exactly,more reliable in this field.In the paper,at first,the basic conception and principles of the MMM technology are depicted,secondly,the difference between the MMM and the self-magnetization phenomena are introduced.Finally, analyzing the developing situation of the MMM technology,the developing direction of the MMM non-destructive testing technology is suggested for the future.