Inverse Problem of Identifying a Small Defect Based on an Asymptotic Method

Vatul’yan, A. O.; Belyak, O. A.

doi:10.1134/s1061830920070074

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Also, some cases of lack of echo-signals from defects even with satisfactory quality of defectograms recording on the defective section of the track were found in the course of defectograms interpretation of detected acutely defective rails. It should be noted that various methods of signal and image processing are used when transcribing defectograms [12,13], but the results of measurements of the conventional dimensions of defects are obtained in manual mode. Despite the fact that the sensitivity of the corresponding channels of flaw detection equipment is set in advance and in some cases can exceed the sensitivity of acceptance control [14], the decrease in the conditional dimensions of defects to be detected will lead to a decrease in the reliability of ultrasonic testing.…”

Section: Introductionmentioning

confidence: 99%

Influence of speed of rail flaw detection on the reliability of its results

2023

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The system of non-destructive testing of rails during their operation on the railroad network of the Russian Federation is based on the use of removable and mobile means of flaw detection. The increase in the volume of control by mobile means in recent years is explained by their higher productivity due to the higher speed of control. But the increase in the speed of control inevitably leads to the loss of acoustic contact and missing defects.

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Section: Introductionmentioning

confidence: 99%