Vibrational diagnostics of electrical machine is a significant element in prevention of serious industrial breakdowns. Presenting the ways, methods and elements of the applied vibrational diagnostics is the subject of this article.
The benefits of the additional measurement of rotational degrees of free-dom on the performance of the vibration diagnosis of bridges are studied in this paper. The common vibrational diagnostics that uses translational degrees of freedom is extended by measurements of rotations. The study is curried out on a footbridge and the presence of damage as well as its location and size is determined with use of FEM updating procedure. The results showed that rotational degrees of freedom significantly improve the effectiveness of the vibrational method.
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A correlation method for estimation of the influence of the change of turboset operational modes on its vibrational state using experimental data at post-analysis is used. For the solution of the problem in the automated operational mode of a system for vibrational diagnostics, the method using average value and current values of indexes of vibrational and technological processes is proposed. The results of full-scale investigations of vibrational state of the turboset at the change of power consumption are presented.
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