Перегляд за Автор "Mirchev, Yordan"

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    Advantages of Using Eddy Current Array for Detection and Evaluation of Defects in Aviation Components
    (Bulgarian Society for NDT, 2023) Lysenko, Iuliia; Mirchev, Yordan; Levchenko, Oleksandr; Kuts, Yurii; Uchanin, Valentyn
    This article examines the potential of Eddy Current Array (ECA) as a non-destructive testing (NDT) technique for aviation components. Experimental investigations were conducted using a specially prepared sample with various defects. The scanning results demonstrated ECA's enhanced detection sensitivity, high inspection speed, and ability to characterize defects. The study emphasizes the need to optimize the inspection process and utilize automated subsystems for signal filtration and result evaluation. The findings support the adoption of ECA as an effective NDT technique in the aviation industry, contributing to improved safety and reliability. This research provides valuable insights for the development of guidelines and standards, enhancing the overall efficiency of aviation inspections.
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    Eddy Current Array Testing of Steel Tube Profiles
    (Bulgarian Society for NDT, 2023) Mirchev, Yordan; Lysenko, Iuliia; Borisov, Tsvetomir; Kovtun, Vadim; Chukachev, Pavel
    This paper addresses testing longitudinal welded joint in a thin-walled tube using semi-automatic eddy current test system and flexible eddy current array probe. The system is by OLYMPUS (EVIDENT). These test results from artificially induced discontinuities have been compared and analysed relative to visual test results. The capability of the semi-automated eddy current system to detect discontinuities located on the inner surface of a 3.2 mm thick tube was studied.
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    Evaluation Of Eddy Current Array Performance In Detecting Aircraft Component Defects
    (Institute of Aviation, 2024) Lysenko, Iuliia; Kuts, Yurii; Uchanin, Valentyn; Mirchev, Yordan; Levchenko, Oleksandr
    Eddy current array (ECA) technology is increasingly being used in the aerospace industry for non-destructive testing of aircraft components. This study evaluates the performance of ECA in detecting defects in aircraft components, focusing on its effectiveness, reliability, and sensitivity. The study evaluates the effectiveness of ECA technology in eddy current defectoscopy by introducing a dimensionless efficiency coefficient, then seeks to validate this coefficient through experimental testing of aircraft component materials with artificially induced defects of various sizes, types, and orientations to simulate real-world scenarios. ECA’s sensitivity in detecting small and subsurface defects is analyzed, along with precise defect sizing and positional information. Reliability and repeatability are investigated through repeated measurements. Furthermore, the article analyses the impact of various factors on the performance of ECA, including surface conditions, probe configurations, and inspection parameters. Comparative analysis is performed to assess the advantages and limitations of ECA in comparison to other conventional inspection methods. The findings of this study will contribute to a better understanding of the capabilities and limitations of ECA in detecting aircraft component defects. The results will aid in optimizing inspection strategies, enhancing the reliability of defect detection, and improving the overall maintenance practices in the aerospace industry.
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    Reviewing challenges in the application of eddy current arrays and their impact on NDT efficiency
    (НАУ, 2023) Lysenko, Iuliia; Kuts, Yurii; Mirchev, Yordan; Levchenko, Oleksandr
    Eddy current arrays (ECAs) have gained significant popularity in the field of non-destructive testing (NDT) due to their ability to provide fast and accurate inspection results. However, several challenges associated with using ECAs in NDT need to be overcome in order to improve inspection performance. One of the primary challenges with ECAs is the impact of array size and geometry on inspection effectiveness. The size and shape of the ECA directly influence the sensitivity and resolution of the inspection process, making it challenging to optimize these parameters for specific inspection scenarios. Furthermore, the use of large ECAs can lead to increased noise levels and reduced inspection speed, negatively affecting the overall efficiency of the inspection process.