| Issue |
MATEC Web Conf.
Volume 148, 2018
International Conference on Engineering Vibration (ICoEV 2017)
|
|
|---|---|---|
| Article Number | 14008 | |
| Number of page(s) | 5 | |
| Section | Vibration-Based Structural Health Monitoring Data Analysis and Time Series Methods | |
| DOI | https://doi.org/10.1051/matecconf/201814814008 | |
| Published online | 02 February 2018 | |
Vibration Based Damage Detection of Rotating Beams
1
Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Bulgaria
2
Institute of Mechanics, Bulgarian Academy of Sciences, Bulgaria
3
Department of Engineering Mechanics, Hohai University, Nanjing, China
* Corresponding author: stoykov@parallel.bas.bg
The early detection and localization of damages is essential for operation, maintenance and cost of the structures. Because the frequency of vibration cannot be controlled in real-life structures, the methods for damage detection should work for wide range of frequencies. In the current work, the equation of motion of rotating beam is derived and presented and the damage is modelled by reduced thickness. Vibration based methods which use Poincaré maps are implemented for damage localization. It is shown that for clamped-free boundary conditions these methods are not always reliable and their success depends on the excitation frequency. The shapes of vibration of damaged and undamaged beams are shown and it is concluded that appropriate selection criteria should be defined for successful detection and localization of damages.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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