Abstract
The work herein presents a novel approach for sound field characterization based on a continuous scanning/roving approach. Conventional methods use sensor arrays or a discreet moving sensor to characterize an acoustic field. Although these methods are well established, this new approach attempts to take advantage of a continuous measurement methodology, in space and time, in order to increase spatial resolution of the acoustic field, minimize the use of sensors required, and the acquisition time. The novel approach relies on processing amplitude-modulated time signal, with geometrical reference, in order to characterize the acoustic field. This technique can be thought of as an extension of continuous scanning laser Doppler vibrometry techniques.The work is demonstrated on a lab test article and used to identify the acoustic propagation generated by the excitation of several structural modes. The work shown here is preliminary and mainly aimed at proving the methods feasibility.
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Acknowledgements
The authors would like to thank Dr. Dario DiMaio and Prof. Ewins from the University of Bristol for the fruitful discussion that led to this work.
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© 2014 The Society for Experimental Mechanics
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Garcia, C.E., Malladi, S., Tarazaga, P.A. (2014). Continuous Scanning for Acoustic Field Characterization. In: Allemang, R., De Clerck, J., Niezrecki, C., Wicks, A. (eds) Topics in Modal Analysis, Volume 7. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6585-0_60
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DOI: https://doi.org/10.1007/978-1-4614-6585-0_60
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