Method of vibration diagnostics of the technical condition of electronic equipment structures

The article considers the method of vibration diagnostics of onboard electronic devices based on the analysis of resonant frequencies. An algorithm for diagnosing mechanical defects of the studied blocks and nodes is presented. The structure of the complex of software tools for diagnostics automation and the results of testing the proposed method are presented. The main goal of the research is to improve the accuracy of identification of design defects of on-Board electronic devices. The transition from the analysis of the frequency response to the resonant frequencies that characterize the physical and mechanical parameters of the structure is due to greater stability and lower measurement error of this characteristic. To achieve this goal, a diagnostic model of the method has been developed that allows taking into account the spread of parameters of the electronic tool, both for the serviceable state and for the state with a defect. To estimate the permissible deviations of resonant frequencies from the nominal values, statistical simulation was performed using the Monte Carlo method. It was also possible to increase the reliability of the results of the physical experiment by determining the best position of the accelerometer in terms of the response received. The article provides a structure and description of the algorithm for searching for it. The results of approbation of the considered method on the example of the printed node of the voltage divider of the control unit of the aircraft are presented. In CAD SolidWorks, the serviceable state of the test node was modeled, for which four resonant frequencies were determined, and the state with a defect in the form of a detachment of the attachment. Analysis of the results showed a shift of three values of resonant frequencies relative to the correct state. The conducted series of 10 tests revealed the defect in all 10 cases (with the permissible error of the research result). This indicates a high degree of reliability of the data obtained, the adequacy of the diagnostic model of the method and the correctness of the applied algorithms.

1. Komarov A.S., Krapukhin D.V., Shul’gin E.I. Upravlenie tekhnicheskim urovnem vysokointegrirovannykh elektronnykh sistem (nauchno-tekhnologicheskie problemy i aspekty razvitiya)(Management of the technical level of highly integrated electronic systems (scientific and technological problems and aspects of development)), P.P. Maltsev (Ed.). Moscow: Tekhnosfera; 2014. 240 p. (in Russ.). ISBN 978-5-94836-397-4

2. Uvaisov R.I. Metod diagnostirovaniya defektov bortovykh radiotekhnicheskikh ustroistv: Cand. Sci. Thesis. Moscow: MIEM; 2008. 157 p. (in Russ.).

3. Donskoy D.M., Ramezani M. Separation of amplitude and frequency modulations in Vibro-Аcoustic Modulation Nondestructive Testing Method. In: Proceedings of Meetings on Acoustics. 2018;34(1):045002. https://doi.org/10.1121/2.0000831

4. Lyshov S.M., Ivanov I.A., Uvaisov S.U., Chernoverskaya V.V. Vibration control of electronic means technical condition based on analysis of resonant frequencies. In: 2019 International Seminar on Electron Devices Design and Production (SED). Prague, Czech Republic; 2019. 4 p. https://doi.org/10.1109/SED.2019.8798407

5. Tikhonov A.N., Uvaisov S.U., Ivanov I.A., Lyshov S.M. Conception and method of diagnosis of printed board assembly with using of on-board emulators oscillation. PRIKASPIISKII ZhURNAL: upravlenie i vysokie tekhnologii= CASPIAN JOURNAL: Management and High Technologies. 2016;4(36):144−154 (in Russ.).

6. Lysov S.M., Ivanov I.A., Uvaisova A.S., Uvaisova S.S. Calculation of resonant frequencies spread of printed circuit assembly of electronic devices. Vestnik kibernetiki= Proceedings of Cybernetics. 2018;4(32):129−135 (in Russ.).

7. Bach Phi Duong, Jong-Myon Kim. Prognosis of remaining bearing life with vibration signals using a sequential Monte Carlo framework. J. Acoust. Soc. Am.2019;146(4):EL358. https://doi.org/10.1121/1.5129076

8. Zhao Х., Gao H., Zhang G., Аyhan B., Yan F., Kwan C., Rose J.L. Аctive health monitoring of an aircraft wing with embedded piezoelectric sensor/actuator network: I. Defect detection, localization and growth monitoring. Smart Mater. Struct. 2007;16(4):1208. https://doi.org/10.1088/0964-1726/16/4/032

9. Khramtsov A.M. Stress-strain state of interacting elements of a piezo actuator: Cand. Sci. Thesis. Tomsk: MIEM; 2017. 135 p. (in Russ.).

10. Tua P., Quek S., Wang Q. Detection of cracks in plates using piezo-actuated Lamb waves. Smart Mater. Struct. 2004;13(4):643. https://doi.org/10.1088/0964-1726/13/4/002

11. Volovikov V.V. Development of methods for improving the reliability of radio electronic equipment based on continuous complex modeling of physical processes. Nadezhnost’ = Dependability.2008;1(24):3−9 (in Russ.).

12. Ivanov I.I., Naumova E.N. Analysis of simulation results of vibration processes in various CAD systems. Innovatsionnye, informatsionnye i kommunikatsionnye tekhnologii. 2018;1:476−482 (in Russ.).

13. Kofanov Yu.N., Shalumov A.S., Zhuravskii V.G., Gol’din V. V. Matematicheskoe modelirovanie radioelektronnykh sredstv pri mekhanicheskikh vozdeistviyakh(Mathematical modeling of radio electronic devices under mechanical influences). Moscow: Radio i svyaz’; 2000. 226 p. (in Russ.). ISBN 5-256-01539-7

14. Malpass L. SolidWorks 2009 API – Advanced Product Development. 2009. 246 p.

15. Ivanov I.A., Suleimanov S.P., Uvaisov R.I. A software complex for diagnosing structural integrity violations. Innovatsii v usloviyakh razvitiya informatsionno-kommunikatsionnykh tekhnologii. 2007;1:227−229 (in Russ.).

16. Lyshov S.M., Uvaisov S.U., Chernoverskaya V.V., LeQuocKhanhPham. Engineering technique for vibrationdiagnostics of structures on-board radio electronic means. Naukoemkie Tekhnologii= Science Intensive Technologies. 2020;21(2-3):17−28 (in Russ.). https://doi.org/10.18127/j19998465-202002-3-03