The Effect of Vibration Frequency on the Physical and Mechanical Properties of the Material and the Phase Structure of the Pump Part
Ivanova O.V. Savinkin V.V. Tuleshov A.K. Sandu A.V. Vizureanu P.
2025Polska Akademia Nauk
Archives of Metallurgy and Materials
2025#70Issue 31353 - 1364 pp.
The article solves the scientific and technical problem of studying the effect of vibration loads on the phase structure of the material and the durability of a centrifugal pump. It was found that the natural frequencies of the impeller (>100 Hz) are 75% higher than the operating speed of the structure (25 Hz), which indicates sufficient rigidity of the wheel structure for the selected materials 12Cr7Mn3SiC. The scientific novelty is represented by the established dependences of changes in the frequency range of vibrations leading to the formation of stresses, a decrease in the physico-mechanical properties of the phase structure of the material from dynamic loads of different forms of vibrations. The optimal range of permissible frequency oscillations of the system and the object that are not in the resonant state is justified. The theoretical significance is reflected in the systematization of structural and frequency-vibration factors affecting the formation of fatigue stress concentrations and the origin of microcracks in the phase structure of perlite. At a distance of 3 mm from the crack, a transition to a more dispersed structure is established, the characteristic size of ferritic grains decreases to 5-10 µm. It was found that at a distance of less than 100 µm from the crack, the hardness increases (~240 HV for ferrite and ~260 HV for perlite). Thus, cyclic loads of vibrational frequencies led to grain grinding, an increase in hardness and the appearance of a crack in the most loaded part of some samples. The acquired knowledge allows us to predict defects with high accuracy at the stage of pre-destruction of the molecular bonds of the material structure.
centrifugal pump , durability , modeling , phase structure , physical and mechanical properties , Vibration frequencies
Text of the article Перейти на текст статьи
Joldasbekov Institute of Mechanics and Engineering, 28, Shevchenko Str., Almaty, 050010, Kazakhstan
M. Kozybaev North Kazakhstan University, Transport and Mechanical Engineering Department, 86, Pushkin Street., Petropavlovsk, 150000, Kazakhstan
Gheorghe Asachi Technical University of Iaşi, Faculty of Materials Science and Engineering, Boulevard D. Mangeron, No. 51, Iasi, 700050, Romania
Romanian Inventors Forum, Str. P. Movila 3, Iasi, 700089, Romania
National Institute for Research and Development for Environmental Protection INCDPM, 294 Splaiul Independentei, Bucharest, 060031, Romania
Academy of Romanian Scientists, 54 Splaiul Independentei St., Sect. 5, Bucharest, 050094, Romania
Technical Sciences Academy of Romania, Dacia Blvd 26, Bucharest, 030167, Romania
Joldasbekov Institute of Mechanics and Engineering
M. Kozybaev North Kazakhstan University
Gheorghe Asachi Technical University of Iaşi
Romanian Inventors Forum
National Institute for Research and Development for Environmental Protection INCDPM
Academy of Romanian Scientists
Technical Sciences Academy of Romania
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026