Detection of Defects in the Tubes of Refrigerators of Locomotive Diesel Engines by the Eddy Current Method

Aks'onova, S. I.; Lyubchenko, A. P.; Uchanin, V.M.; Melanchuk, V. Yu.; Tykhomyrov, B. V.; Yavorovych, S. I.

doi:10.1007/s11003-005-0178-7

Cited by 2 publications

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“…Eddy current methods can also be used for the verification of technical conditions of pipes [7,8]. The authors of [7] studied pipes in combustion engines of locomotives.…”

Section: Areas Of Application Of the Eddy Current Methodsmentioning

confidence: 99%

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Influence of the Gap between Measuring Head and Tested Object on the Results of an Eddy Current Test Method

Zbrowski

Jóźwik

2014

SSP

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The article presents the influence of the distance between a measuring head and a tested object on the results of eddy current defectoscopy test. The tests were conducted on the two inner rings of a tapered roller bearing where the test defects were performed. A one-millimetre hole corresponded to the surface defect. Internal blind holes in the shape of a rectangle corresponded to a subsurface defect. The research was performed with the use of a SSEC III PC defectoscope connected to a mobile PC. The measuring device is part of the system for the automatic quality control of bearing rings. The test was conducted for a slit having following dimensions: 0.1, 0.2, 0.3, 0.4, and 0.5 mm. The obtained characteristics are the composition of the pulse caused by the detected defect and the sine wave caused by the axial runout of the tested bearing ring. The correlation between the slit size and the value of the signal of the defect and the sine wave caused by axial runout of the tested ring was observed. The concept of “a coefficient of defect detection” was introduced. The described coefficient is a quotient of the value of the defect signal and the peak-to-peak value of the sine wave caused by axial runout of the tested bearing ring. The increase in the dimensions of the slit from 0.1 to 0.5 mm causes a 35 - 50% decrease in the coefficient of defect detection, depending on the test defect. A handle was designed to ensure a constant pressure of measuring head on the tested surface was proposed.

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“…Eddy current methods can also be used for the verification of technical conditions of pipes [7,8]. The authors of [7] studied pipes in combustion engines of locomotives.…”

Section: Areas Of Application Of the Eddy Current Methodsmentioning

confidence: 99%

“…Eddy current methods can also be used for the verification of technical conditions of pipes [7,8]. The authors of [7] studied pipes in combustion engines of locomotives. The results of their investigations were compared to the results obtained with the use of other non-destructive methods (i.e.…”

Section: Areas Of Application Of the Eddy Current Methodsmentioning

confidence: 99%

Influence of the Gap between Measuring Head and Tested Object on the Results of an Eddy Current Test Method

Zbrowski

Jóźwik

2014

SSP

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“…Тому перші засоби ВСК були орієнтовані на роботу на одній або декількох фіксованих робочих частотах в статичному (квазістатичному) [3,4] або модуляційному [4,5] режимах.…”

Section: вступunclassified

“…(5) (на відміну від (1) амплітуда і початкова фаза залежать від часу t, то їх необхідно розглядати не як параметри, а як амплітудо-часову і фазо-часову функції (характеристики). Отже сигнал (5) уявляє гармонічний сигнал-носій робочої частоти зі складною амплітудною і фазовою модуляціями.…”

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Application of hilbert transform for analysis of signals of automated eddy current inspection. Part 1. Theoretical aspects of Hilbert transformation application at eddy current inspection

Kuts¹,

Uchanin²,

Lysenko³

et al. 2021

Tekh. Diagnost. i Nerazrush. Kontrol

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Detection of Defects in the Tubes of Refrigerators of Locomotive Diesel Engines by the Eddy Current Method

Cited by 2 publications

References 0 publications

Influence of the Gap between Measuring Head and Tested Object on the Results of an Eddy Current Test Method

Influence of the Gap between Measuring Head and Tested Object on the Results of an Eddy Current Test Method

Application of hilbert transform for analysis of signals of automated eddy current inspection. Part 1. Theoretical aspects of Hilbert transformation application at eddy current inspection

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