RTU Research Information System
Latviešu English

Publikācija: Damage Vibrodiagnostics in Initially Symmetric Structures

Publication Type Full-text conference paper published in other conference proceedings
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Damage Vibrodiagnostics in Initially Symmetric Structures
Field of research 2. Engineering and technology
Sub-field of research 2.3 Mechanical engineering
Authors Vitālijs Beresņevičs
Vladislavs Jevstigņejevs
Keywords Damage, vibrodiagnostics, beam, flexural mode, distortion, detection sensitivity
Abstract 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.
Reference Beresņevičs, V., Jevstigņejevs, V. Damage Vibrodiagnostics in Initially Symmetric Structures. In: 11th International Scientific Conference "Vibration - 2014. Vibration Technologies, Mechatronics and Controlled Machines", Russia, Kursk, 14-16 May, 2014. Kursk: Southwest State University, 2014, pp.54-62. ISBN 9785768109257.
ID 18329