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Detection of local stress concentration zones in engineering products—the lacking link in the non-destructive testing system

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Abstract

It is known that one of the main sources of damage during operation of machine-building products are local stress concentration zones (SCZ) that form under the action of workloads primarily on defects of metallurgical and process nature. Sizes of these SCZ vary from several tens of microns to several millimeters. Furthermore, it is unknown where these local areas are located and how they can be found. At the same time, the reject levels of the applied conventional non-destructive testing (NDT) methods at manufacturing plants significantly exceed the sizes of some metallurgical defects. At present, a fundamentally new NDT method based on the use of the magnetic memory of metal (MMM) is more commonly applied in practice. It uses the natural magnetization formed during the products fabrication. The article considers the capabilities of the MMM method for inspection of machine-building products quality by structural inhomogeneity and residual stresses.

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References

  1. .M. A. Maleque and M. S. Salit (2013) Materials selection and design, SpringerBriefs in Materials. DOI: 10.1007/978-981-4560-38-2_2,_ The Author(s)

  2. Dubov A, Dubov A, Kolokolnikov S (2014) Application of the metal magnetic memory method for detection of defects at the initial stage of their development for prevention of failures of power engineering welded steel structures and steam turbine parts. Weld World 58(2):225–236. https://doi.org/10.1007/s40194-013-0102-y

    Article  Google Scholar 

  3. ISO 24497–1:2007, Nondestructive testing—metal magnetic memory—part 1: vocabulary, 2007

  4. ISO 24497–2:2007, Nondestructive testing—metal magnetic memory—part 2: general requirements, 2007

  5. ISO 24497–3:2007, Nondestructive testing—metal magnetic memory—part 3: inspection of welded joints, 2007

  6. Method of metal magnetic memory (MMM) and inspection instruments. Training handbook. Document No: V-1347-06r4. Compiled by Dubov AA, Dubov Al. A, Kolokolnikov SM, Edited by the Editorial Committee of Commission V under the Chairmanship of Gerd DOBMANN, Fraunhofer, Germany, Commission V, International Institute of Welding, Date of Issue 09.07.06

  7. V.T. Vlasov, A.A. Dubov. Physical theory of the “strain-failure” process. Part I. Physical criteria of the metal’s limiting states. Moscow: ZAO “Tisso”, 2007. 517 p. [In Russian]

  8. Dubov AA (2011) Estimating the service life of thermal power equipment in accordance with the new national standard. Therm Eng 58(11):957–961

    Article  Google Scholar 

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Authors and Affiliations

  1. Energodiagnostika Co. Ltd., Moscow, Russia

    Anatoly Dubov, Alexandr Dubov & Sergey Kolokolnikov

Authors
  1. Anatoly Dubov
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  2. Alexandr Dubov
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  3. Sergey Kolokolnikov
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Corresponding author

Correspondence to Sergey Kolokolnikov.

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Recommended for publication by Commission V - NDT and Quality Assurance of Welded Products

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Dubov, A., Dubov, A. & Kolokolnikov, S. Detection of local stress concentration zones in engineering products—the lacking link in the non-destructive testing system. Weld World 62, 301–309 (2018). https://doi.org/10.1007/s40194-018-0551-4

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  • DOI: https://doi.org/10.1007/s40194-018-0551-4

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