Geodesic
On finding a~threshold of useful signals in the analysis of magnetic and eddy current defectograms
Modelirovanie i analiz informacionnyh sistem, Tome 24 (2017) no. 6, pp. 760-771.

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To ensure traffic safety of railway transport, non-destructive testing of rails is regularly carried out by using various approaches and methods, including magnetic and eddy current flaw detection methods. The paper is devoted to the problem of automatic determination of a threshold level of amplitudes of useful signals (from defects and structural elements of a railway track) during the \linebreak analysis of defectograms (records) of magnetic and eddy current flaw detectors. A signal is considered useful (and is subject to further analysis) if a deviation of its value from an average of all signals is at least twice the threshold noise level of rails. The probability of obtaining a signal from a section without structural elements (a rail noise signal) is characterized by the normal distribution law. Thus, the rule of three sigma can be used to calculate the threshold noise level. And a signal is useful if its amplitude deviation from a sample mean exceeds twice the threshold noise level. The paper proposes an algorithm for finding the threshold level of a rail noise and gives its theoretical justification, and it also examines examples of its operation on several fragments of real magnetic and eddy current defectograms.
Keywords: nondestructive testing, magnetic and eddy current testing, rail flaw detection, automated analysis of magnetic and eddy current defectograms. 
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E. V. Kuzmin; O. E. Gorbunov; P. O. Plotnikov; V. A. Tyukin. On finding a~threshold of useful signals in the analysis of magnetic and eddy current defectograms. Modelirovanie i analiz informacionnyh sistem, Tome 24 (2017) no. 6, pp. 760-771. http://geodesic.mathdoc.fr/item/MAIS_2017_24_6_a8/

[1] Markov A. A., Kuznetsova E. A., Rails flaw detection. Formation and analysis of signals, v. 1, Principles, KultInformPress, St. Petersburg, 2010 (in Russian)

[2] Markov A. A., Kuznetsova E. A., Rails flaw detection. Formation and analysis of signals, v. 2, Data interpretation, Ultra Print, St. Petersburg, 2014 (in Russian)

[3] Tarabrin V. F., Zverev A. V., Gorbunov O. E., Kuzmin E. V., “About Data Filtration of the Defectogram Automatic Interpretation by Hardware and Software Complex “ASTRA””, NDT World, 64:2 (2014), 5–9 (in Russian)

[4] Tarabrin V. F., Kuzmin E. V., Gorbunov O. E., Zverev A. V., “Ob opredelenii dinamicheskogo poroga urovnya signalov pri avtomaticheskoy rasshifrovke defektogramm APK “ASTRA””, Sbornik tezisov nauchnykh dokladov XX vserossiyskoy nauchno-technicheskoy konferentsii po nerazrushayuschemu kontrolyu I tekhnicheskoy diagnostike, Izdatlskiy dom “Spektr”, Moscow, 2014, 145–147 (in Russian)

[5] Ventcel E. S., Ovcharov L. A., Probability Theory and Its Engineering Applications, Vysshaya Shkola Publishers, Moscow, 2000 (in Russian) | MR

[6] Gmurman V. E., Probability Theory and Mathematical Statistics, Vysshaya Shkola Publishers, Moscow, 2004 (in Russian) | MR

[7] Feller V., Vvedenie v teoriyu veroyatnostei i ee prilozheniya, Per. s angl., v. 1, 2, Mir, M., 1984 ; Feller W., An Introduction to Probability Theory and Its Applications, v. I, John Willey Sons, 1970 ; v. II, 1971 | MR | MR