Damage Vibrodiagnostics in Initially Symmetric Structures
11th International Scientific Conference "Vibration - 2014. Vibration Technologies, Mechatronics and Controlled Machines" 2014
Vitālijs Beresņevičs, Vladislavs Jevstigņejevs

This paper considers new damage detection methods, based on utilization of specific vibration effects caused by the distortions of system’s initial symmetry due to appearance of faults. Dynamic behavior of damaged structure under the test harmonic excitation is analyzed using two methods: analogue-digital simulation on specialized computer system and numerical solution with program ANSYS. It is shown that specific distortions of flexural modes and vibration spectrum can be used as diagnostic signs of defects. The main advantage of this approach lies in the more high detection sensitivity in comparison with traditional resonant frequency methods. Further rise of detection sensitivity can be achieved by insertion of additional nonlinear element into the structure of testing object.


Atslēgas vārdi
Damage, vibrodiagnostics, beam, flexural mode, distortion, detection sensitivity

Beresņevičs, V., Jevstigņejevs, V. Damage Vibrodiagnostics in Initially Symmetric Structures. No: 11th International Scientific Conference "Vibration - 2014. Vibration Technologies, Mechatronics and Controlled Machines", Krievija, Kursk, 14.-16. maijs, 2014. Kursk: Southwest State University, 2014, 54.-62.lpp. ISBN 9785768109257.

Publikācijas valoda
English (en)
RTU Zinātniskā bibliotēka.
E-pasts: uzzinas@rtu.lv; Tālr: +371 28399196