10.14489/td.2025.08.pp.062-069

2025, 08 August

DOI: 10.14489/td.2025.08.pp.062-069

Elkhutov S. N., Lavrik A. A.
METHOD OF DETERMINING PISTON MACHINE DEFECTS BASED ON RECORDING THE ANGULAR SPEED OF SHAFT ROTATION
(pp. 62-69)

Abstract. The article discusses the application of non-destructive testing methods for assessing the technical condition of piston machines. Traditional non-destructive testing methods, such as vibration analysis, acoustic emission, and ultrasonic testing, have limitations when diagnosing piston machines due to the specific nature of their operation. The article proposes an alternative method for monitoring the technical condition of piston machines, based on measuring the instantaneous angular velocity of the shaft. This method allows for the detection of wear, assembly defects, and other issues affecting equipment performance. The procedure for data acquisition using Hall-effect sensors and an ESP32 microcontroller is described, along with signal processing algorithms for analyzing the technical condition. Laboratory studies were conducted on a test bench with a single-cylinder air compressor, confirming the method's effectiveness in diagnosing faults in the valve mechanism and connecting rod bearing.

Keywords: non-destructive testing, piston machine, angular velocity, encoder, mathematical model.

+ - About the Authors Click to collapse

S. N. Elkhutov, A. A. Lavrik (Angarsk State Technical University, Angarsk, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Nesteruk, D. A., & Vavilov, V. P. (2007). Thermal control and diagnostics: Textbook for training specialists of levels I, II, III. [in Russian language].
2. Yastrebova, N. A., Kondakov, A. I., & Spektor, B. A. (1991). Maintenance and repair of compressors. Mashinostroenie. [in Russian language].
3. Chubko, Yu. M., & Salo, N. Yu. (2021). Analysis of vibration monitoring as a consequence of increasing the efficiency of repair activities. Vestnik Nauki, 5(5(38)), 141–147. [in Russian language].
4. Konovalov, N. N. (2003). Evaluation of reliability indicators of ultrasonic testing of welded joints. Defektoskopiya, (9), 4–8. [in Russian language].
5. Elkhutov, S. N., & Lavrik, A. A. (2024). Method of non-destructive testing of piston machines based on recording changes in the angular acceleration of the shaft (Patent No. RU2826838, МПК6 G01M 15/04). Russian Federal Service for Intellectual Property. [in Russian language].

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