NON-CONTACT EXCITATION SYSTEM TO HIGHLIGHT THE VIBRATION MODES OF BEAMS.
Saved in:
| Title: | NON-CONTACT EXCITATION SYSTEM TO HIGHLIGHT THE VIBRATION MODES OF BEAMS. |
|---|---|
| Authors: | Paun, Rusalin Lucian1, Gillich, Gilbert-Rainer1, Popescu, Cristinel1, Burtea, Daniela1 |
| Source: | Annals of 'Constantin Brancusi' University of Targu-Jiu. Engineering Series / Analele Universităţii Constantin Brâncuşi din Târgu-Jiu. Seria Inginerie. 2021, Issue 1, p15-20. 6p. |
| Subjects: | Induction coils, Electromagnetic forces, Signal-to-noise ratio, Signal processing, Ferromagnetic materials |
| Abstract: | This paper introduces device dedicated to the excitation of beam-like structures for damage detection issues. The vibration-based damage detection system consists of two subsystems, one used for actuation and the second for acquiring and processing the measured signal. The actuation is produced by an electromagnetic force induced by an induction coil controlled by a driver. The force can get a sinusoidal or a swept-sine evolution in the frequency range 1 to 1600 Hz. By controlling the individual vibration modes, we ensure a good signal-to-noise ratio, and, therefore, an accurate frequency estimation. The test procedure is presented in detail in this paper. It is verified by applying it to a cantilever beam with a constant cross-section in the absence and the presence of a small added mass. The small frequency changes are precisely identified. [ABSTRACT FROM AUTHOR] |
| Copyright of Annals of 'Constantin Brancusi' University of Targu-Jiu. Engineering Series / Analele Universităţii Constantin Brâncuşi din Târgu-Jiu. Seria Inginerie is the property of Universitatea Constantin Brancusi din Targu-Jiu and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
