Reutov, Russian Federation
The main purpose of the metal magnetic memory method is to determine on equipment and in structures in express-testing mode using specialized instruments and scanning devices stress concentration zones — the main sources of developing damages. These zones are not only pre-known areas where different conditions for distribution of stresses created by external load arise due to design features, but also randomly located areas where large deformations occur due to initial non-uniformity of metal in combination with non-specific additional workloads. Metal magnetic memory inspection is performed without metal grinding and artificial magnetization. Residual magnetization is used, which developed naturally during manufacture of products and during their operation.
metal express-testing, magnetic memory, remanent magnetism, stress concentration zones
1. Dubov A. A., Pravdin L. S. Tehnicheskaya diagnostika poverhnostey nagreva energeticheskih kotlov po ostatochnoy namagnichennosti metalla trub. - Energetik. 1989. № 8. S. 13.
2. GOST R ISO 24497-1-2009. Kontrol' nerazrushayuschiy. Metod magnitnoy pamyati metalla. Chast' 1. Terminy i opredeleniya. Chast' 2. Obschie polozheniya. Chast' 3. Kontrol' svarnyh soedineniy. - M.: Standartinform, 2010.
3. Dubov A. A. Metrologicheskie aspekty v metode magnitnoy pamyati metalla. - Mir izmereniy. 2018. № 3. S.42-45; № 4. S.16-18.
4. Dubov A. A. Principial'nye otlichiya metoda magnitnoy pamyati metalla ot drugih izvestnyh magnitnyh metodov nerazrushayuschego kontrolya. Itogi i perspektivy razvitiya metoda. - Territoriya NDT. 2016. № 2. C. 64-68.
5. Vlasov V. T., Dubov A. A. Fizicheskaya teoriya processa «deformaciya-razrushenie». Ch.I. Fizicheskie kriterii predel'nyh sostoyaniy metalla. -M.: ZAO «Tisso», 2007. - 517 s. Ch. II. Termodinamika processa. - M.: ID «Spektr», 2016. - 228 s.
6. Dubov A. A. Monitoring riskov na osnove ranney diagnostiki sostoyaniya metalla oborudovaniya i konstrukciy v zonah koncentracii napryazheniy - istochnikov razvitiya povrezhdeniy. - Himicheskaya tehnika. 2016, № 4. S. 26-28.