Investigation of the possibility detection of defects in rail foot by mfl method

Author:

Markov A. A.1,Mosyagin V. V.1,Antipov A. G.2,Ivanov G. A.3

Affiliation:

1. JSC «Radioavionica»

2. St.Petersburg State University

3. St. Petersburg Mining University

Abstract

The article investigates the possibility of detecting defects in the form of transverse cracks in the rail foot at continuous inspection of rails during their operation. Magnetic method is chosen as an alternative to ultrasonic inspection. Computer modeling was carried out, based on the results of which a working model of the magnetization system and registration of control signals was developed and manufactured. Experimental studies of detection of crack models in the rail foot were carried out in laboratory conditions. The studies confirmed the results of computer modeling and proved the possibility of detecting such crack models. The minimum sizes of detectable crack models in rail foot in the zone of rail fasteners and between them have been estimated.

Publisher

The Russian Academy of Sciences

Reference23 articles.

1. Shur E.A. et al. Evolution of the Contact-Fatigue Defects Caused Rail Failure Rate // Russian Railway Science Journal. 2015. V. 3. P. 3—9.

2. Shur E.A. Rail damage. Moscow: Intext, 2012. 192 p. ISBN: 978-5-89277-108-5

3. Ilyin V.A., Targonsky K.G. Method for ultrasonic check of rail base / Patent for invention No. 2085936 C1. Published on 07/27/1997.

4. Mosyagin V.V., Markov A.A. Investigation of the possibility of controlling the feathers of the base of railway rails. Collection of scientific works. In the world of non-destructive testing and diagnostics of materials of industrial products and the environment // Materials of the IV All-Russian scientific and practical seminar with international participation. St. Petersburg: NWTU, 2003. P. 129.

5. Nikiforenko O.J., Brandes M.P., Lonchak V.A., Nikiforenko J.G. Ultrasonic inspection of the base of railway rails by means of EMA converters // UZDM 2009. XX St. Petersburg Conference. St. Petersburg — Repino, May 26—28, 2009. P. 59—60.

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