Detectability of Rail Defects by Magnetic Flux Leakage Method

A. G. Antipov, A. A. Markov

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

The ability of the Magnetic Flux Leakage (MFL) method to detect flaws in railway rails in two different ways has been studied. First, a three-dimensional computer simulation of the leakage of magnetic flux around a transverse crack in the rail head was carried out to determine the relationship between the main characteristics (size and depth) of the defect and the magnetic sensor signal. Second, signals were analyzed from more than 600 actually confirmed defects of the rail track, enabling statistically determined conclusions on the detectability of various types of flaws by magnetic and ultrasonic methods. It has been established that the MFL method detects rail head defects with the critical size at a depth of up to 20 mm under the upper rail edge. In general, the revealed defects constitute more than 90% of hazardous damage to rail head; this confirms the high efficiency of the MFL method in comparison with acoustic methods, which are also traditionally used in rail non-destructive testing.

Язык оригиналаанглийский
Страницы (с-по)277-285
Число страниц9
ЖурналRussian Journal of Nondestructive Testing
Том55
Номер выпуска4
DOI
СостояниеОпубликовано - 1 апр 2019

Отпечаток

rails
Magnetic flux
magnetic flux
Rails
leakage
Defects
defects
Magnetic sensors
Railroad tracks
Nondestructive examination
cracks
ultrasonics
computerized simulation
Ultrasonics
Acoustics
damage
Cracks
acoustics
sensors
Computer simulation

Предметные области Scopus

  • Материаловедение (все)
  • Физика конденсатов
  • Сопротивление материалов
  • Общее машиностроение

Цитировать

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Detectability of Rail Defects by Magnetic Flux Leakage Method. / Antipov, A. G.; Markov, A. A.

В: Russian Journal of Nondestructive Testing, Том 55, № 4, 01.04.2019, стр. 277-285.

Результат исследований: Научные публикации в периодических изданияхстатья

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