Skip to main content
Log in

Problems of Evaluation of the Flaw Parameters in the Magnetic Nondestructive Testing

  • Published:
Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

Abstract

The magnetic leakage fields are investigated experimentally on rectangular-slit aw models for various magnetizing fields H 0. It is shown that in certain cases the aw parameters can be incorrectly classified as a result of coincidence of their leakage fields. This is associated with both the choice of the magnetizing fields H 0 and the effect of the aw width on the dependence of the aw field on H 0: for wide aws this dependence is close to a linear function, whereas for narrow aws the dependence tends to the magnetization curve of the sample.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

REFERENCES

  1. GOST (State Standard) 21104-75, Kontrol' nerazrushayushchii. Magnitoferrozondovyi metod (Nondestructive Testing. Magnetoferrosound Method), Moscow, 1975.

  2. GOST (State Standard) 25225-82, Kontrol' nerazrushayushchii. Shvy svarnykh soedinenii truboprovodov. Magnitogra_cheskii metod (Nondestructive Testing. Pipeline Welded Joints. Magnetic Method), Moscow, 1982.

  3. GOST (State Standard) 632-80, Truby obsadnye i mufty k nim. Tekhnicheskie usloviya (Casing Pipes and Pipe Couplings. Technical Conditions), Moscow, 1980.

  4. GOST (State Standard) 2590-71, Stal' goryachekatannaya kruglaya. Sortament (Hot-Rolled Rod Steel. Assortment), Moscow, 1971.

  5. Förster, F., Neue Erkentnisse auf dem Gebiet der zerstörungsfreien Prüfung mit magnetischen Streuüuss. In: 3rd European Conference on NDT, Florence (15–18 October, 1984), Conf. Proc. Techn., vol. 5, pp. 287-303.

  6. Dobmann, G., Walle, G., and Holler, P., Magnetic Leakage Flux Testing with Probes: Physical Principles and Restriction for Application, NDT International, 1987, no. 2, pp. 101-104.

    Google Scholar 

  7. Pashagin, A.I., Benklevskaya, N.P., and Shcherbinin, V. E., Magnetic Field of a Flaw inside its Cavity and near the Surface of a Product, Defektoskopiya, 1996, no. 8, pp. 30-38.

    Google Scholar 

  8. Pashagin, A.I. and Benklevskaya, N.P., Correlation Dependences of Magnetic Fields of Model and Natural Flaws in Magnetic Nondestructive Testing, Defektoskopiya, 1999, no. 8, pp. 37-45.

    Google Scholar 

  9. Zatsepin, N.N. and Shcherbinin, V.E., Applied Field Method for Magnetoferrosound Surface-Flaw Testing of Pipe Workpieces, Defektoskopiya, 1965, no. 1, pp. 28-32.

    Google Scholar 

  10. Förster, F., Detection of Surface Flaws in Hot-Rolled Rods without Descaling, Defektoskopiya, 1977, no. 6, pp. 19-30.

    Google Scholar 

  11. Pashagin, A.I., Bogdanovich, B.N., and Shcherbinin, V.E., On Correlation between the Field and the Flaw Dimensions in Magnetic Nondestructive Testing of Hot-Rolled Pipes, Defektoskopiya, 1988, no. 3, pp. 91-93.

    Google Scholar 

  12. Jaschke, D.N., Einüss der Rissform auf das Prüfergebnis bei der Overächenfehlerprüfung, Materialprüfung, 1983, no. 25, pp. 36-39.

    Google Scholar 

  13. Pashagin, A.I. and Yakovleva, N.V., Topography of the Magnetic Field of a Flaw Inclined to the Article Surface, Defektoskopiya, 1993, no. 6, pp. 79-85.

    Google Scholar 

  14. Sapozhnikov, A.B., Trudy SFTI, issue 26, 1948, pp. 189-193.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Pashagin, A.I., Benklevskaya, N.P. & Shcherbinin, V.E. Problems of Evaluation of the Flaw Parameters in the Magnetic Nondestructive Testing. Russian Journal of Nondestructive Testing 38, 399–406 (2002). https://doi.org/10.1023/A:1022118708097

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1022118708097

Keywords

Navigation