Vibration monitoring and strength of structural elements taking into account the inertial properties of materials under broadband vibration
Authors: Skvortsov О.B.
Published in issue: #6(102)/2020
DOI: 10.18698/2308-6033-2020-6-1986
Category: Mechanics | Chapter: Dynamics, Strength of Machines, Instruments, and Equipment
The paper considers influence of the inertial properties of structural materials on mechanical stresses under high-frequency vibrations. The necessity of considering acceleration estimates when creating vibration monitoring systems focused on the incorporating cyclic strength is proved. The importance of the effects of high-frequency vibration in the local areas of the structural material is noted, taking into account the formation of latent defects and reducing the fatigue limit during gigacycle fatigue. Recommendations are given concerning supplement to the vibration monitoring system, taking into account the decrease in strength under high-frequency vibration when solving problems of diagnostics, forecasting and protection with new innovative solutions. It provides increased reliability of the diagnosis and protection of equipment. In addition to evaluating the current state of the unit based on the results of vibration intensity measuring, the proposed solutions allow additional assessing the degree of wear and taking into account the impact of fatigue processes in the operation of a multi-level automatic protection system of the equipment.
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