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Detection and investigation of magnetic field anomalies over surface defects of complex-profle parts
https://doi.org/10.32446/0368-1025it.2021-10-46-52
Abstract
An effective method for detecting surface defects by magnetic field anomalies occurring over cracks, chips and crevices of angular elements of complex-profile parts made of ferromagnetic materials is considered. The method is based on the spectral analysis of the signal of a tangentially oriented vibration-induction transducer. The theoretical justification of the amplitude-phase method of analysis and research based on mathematical modeling of the signal of a vibration-inductive transducer in the form of a trigonometric series is given. The results of recording and analyzing the distribution of the magnetic field strength, as well as the amplitude-phase spectrum of the signal of a vibration-inductive transducer along a surface with an involute and threaded profi les are presented. The results were obtained on control samples of a gear wheel, a threaded stud and a bolt with artificial defects. The conditions for detecting defects based on the results of measuring the amplitude and phase of the first two harmonics of the signal of a vibrationinductive transducer are formulated. The parameters of the control scheme of the involute profiles and threads with the values of the module and the step of the order of several millimeters, providing the possibility of automating the control process with a satisfactory signal/background ratio, are determined. The method is designed to control the continuity of parts containing profiled surface areas (galtel transitions, involute, threaded and spline profiles, etc.).
About the Authors
A. V. Chernova
MIREA-Russian Technological University
Russian Federation
Russian Federation
Alexandra V. Chernova
Moscow
Y. L. Nikolaev
MIREA-Russian Technological University
Russian Federation
Russian Federation
Yuriy L. Nikolaev
Moscow
P. N. Shkatov
MIREA-Russian Technological University
Russian Federation
Russian Federation
Pyotr N. Shkatov
Moscow
M. Y. Prilepko
MIREA-Russian Technological University
Russian Federation
Russian Federation
Michail Y. Prilepko
Moscow
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For citations:
Chernova A.V., Nikolaev Y.L., Shkatov P.N., Prilepko M.Y. Detection and investigation of magnetic field anomalies over surface defects of complex-profle parts. Izmeritel`naya Tekhnika. 2021;(10):46-52. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-10-46-52
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