High-power system for acoustic excitation of plates

Author:

,Paun Rusalin LucianORCID,Gillich Gilbert-RainerORCID, ,Condratiuc Marius,

Abstract

"This paper introduces a device dedicated to acoustic excitation for modal analysis of plates. A particular setup is requested since the system should produce acoustic excitation with high power in the 10…120 Hz frequency range. The system comprises a signal generator, an amplifier powered by a car starter or a battery, and a subwoofer. This system permits setting the generated frequency around the resonance frequency with reasonable frequency and amplitude stability. We present the system’s design and test its performance on a rectangular plate. In our laboratory experiments, we achieved the desired structural behavior. Keywords: modal analysis, acoustic excitation, subwoofer, frequency estimation."

Publisher

Babes-Bolyai University Cluj-Napoca

Reference10 articles.

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3. 3 Gillich G.R., Tufoi M., Korka Z.I., Stanciu E., Petrica A., The Relations between Deflection, Stored Energy and Natural Frequencies, with Application in Damage Detection, Romanian Journal of Acoustics and Vibration, 13(2), 2016, pp. 87-93.

4. 4 Salawu O., Detection of structural damage through changes in frequency: a review, Engineering Structures, 19(9), 1997, pp. 718-723.

5. 5 Minda A.A., Barbinita C.I., Gillich G.R., A Review of Interpolation Methods Used for Frequency Estimation, Romanian Journal of Acoustics and Vibration, 17(1), 2020, pp. 21-26.

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