Technical Diagnostics of Equipment and Constructions with Residual Life Assessment Using the Method of Metal Magnetic Memory
The problems of metal componentss residual life assessment and ways of their solution based on quick NDT methods are considered. The article considers the abilities of the method of metal magnetic memory (MMM method) to detect crack initiation zones directly on equipment and to trace the development of metal fatigue failure process in these zones. Based on 100% power equipment inspection using the MMM method it is suggested to detect all potentially dangerous zones with developing defects and to timely remove them during the repairs. Thus, an opportunity is offered to assess the real equipment life. According to ISO 24497-1:2007 (E) the method of metal magnetic memory (MMM method)-is a non-destructive testing method based on the analysis of self-magnetic leakage field (SMLF) distribution on componentss surfaces for determination of stress concentration zones (SCZs), imperfections and heterogeneity of metal structures and welded joints. A specific feature, which distinguishing the MMM method from other NDT methods, is that it detects concentration of stresses on defects, i.e. evaluates the extent of their danger for damaging development and assesses the stress-strained state of metal and welded joints. The MMM method and corresponding inspection instruments are used at more than 1000 Russian enterprises in various industries. Besides Russia, the method is introduces and tested at individual enterprises in 25 countries of the world.
energy state lifetime assessment metal magnetic memory non-destructive testing residual life assessment stress concentration zone stress-strained state.
Anatoly DUBOV Sergey KOLOKOLNIKOV
Energodiagnostika Co. Ltd. Office 12, Yubileiny prospect 8, Reutov, Moscow region 143965, Russia
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
2367-2375
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）