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Advanced Eddy Current Methods For Evaluating Aviation Components

(Національний авіаційний університет, 2024-05) Lysenko, I.; Kuts, Y.; Mirchev, I.

The presentation provides guidelines for conducting eddy current non-destructive testing on components made of Al-Mg-Si alloy, a popular material in the aerospace industry due to its high mechanical properties and good corrosion resistance. Several potential defects may exist in such components, including internal voids or blowholes, cracks, corrosion, and inhomogeneities in the material's structure. Internal voids can occur during manufacturing, reducing mechanical strength and potentially leading to failure. Cracks may form due to stress or mechanical influences and can propagate, causing component failure. Corrosion may develop on the surface when exposed to aggressive environments or high humidity, weakening the components. Inhomogeneities arising during manufacturing or thermal treatments can affect mechanical properties and lead to failures.

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Analysis of formation processes of informative features in eddy current probes with pulsed excitation mode

(NDT.net, 2023) Lysenko, I.; Kuts, Y.; Uchanin, V.; Protasov, A.

The modern pulsed eddy current (EC) technique for flaw detection in structure inspections of aircraft and automotive elements, or other responsible constructions is typically carried out in aperiodic mode. At the same time, the unstable characteristic points of the EC signal usually used as informative parameters can restrict the potential of this excitation mode due to influence measurement errors. The article considers an application of the pulsed EC method of NDT based on the oscillatory mode. To obtain the conditions concerned with different modes of EC probe response oscillations, an equivalent scheme of the “testing object – EC probe” system was developed. The conditions represent the signal formation process and allow analyzing it for impedance and differential probes. The obtained mathematical model of the probe signals allowed for the dependence of proposed signal parameters on the characteristics of the testing object to be evaluated due to simulation. According to this, the frequency and attenuation coefficient of natural oscillations are proposed as the informative parameters. Also, the simulation results are used for developing enhanced algorithmic software for determining and analyzing the EC signals. The proposed informative parameters are experimentally investigated using a set of specimens. The obtained experimental and simulation results are correlated and it confirms the possibility of the proposed methodology to enhance the inspection procedures related to the specimen’s parameters measurements as well as the detected defect sizing.

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Analysis of normative documentation on the use of array eddy current probes

(КПІ ім. Ігоря Сікорського, 2023) Lysenko, I.; Mirchev, Y.; Kuts, Y.; Levchenko, О.

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Application of Circular Statistics During Analysis of the Eddy Current Testing Signals

(КПІ ім. Ігоря Сікорського, 2019-05) Kuts, Y.; Lysenko, I.; Redka, M.; Kanosa, R.

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Experience in the Use of Surface NDT for the Diagnostics of Military Equipment During Full-scale Military Operations

(Bulgarian Society for NDT, 2022) Poddubchenko, A.; Lysenko, I.; Hlabets, S.; Posypaiko, Y.; Pavlyi, O.

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Investigation of frequency impact on the efficiency of automated eddy current testing of aluminum alloys

(Національний авіаційний університет, 2024-05) Lysenko, I.; Uchanin, V.; Kuts, Y.; Aleksiev, A.

In modern manufacturing, objects made from aluminum alloys are widely used in various industries such as automotive, aerospace, shipbuilding, construction, and others. The application of aluminum alloys is continuously expanding due to their lightness, strength, and corrosion resistance. During the operation of aluminum alloy structural elements, quality testing is crucial, especially for critical components in aerospace, marine, and construction structures. An important aspect of ensuring the quality and safety of such structures is the timely and effective detection of defects, such as cracks, fatigue assessment, and flaws in structural joints. For this purpose, various non-destructive testing methods are employed, among which eddy current testing (ECT) methods hold a significant place.