Abstract
The purpose of this study to evaluate the attenuation and the dispersion properties for viscoelastic materials over a wide range of frequencies. The viscoelastic properties within the frequency of around 200 kHz were examined by using the solid and hollow bars of polymethyl methacrylate (PMMA). The PMMA properties were testes by the longitudinal impact experiments in the lower frequency area of up to around 15 kHz and the ultrasonic propagation experiments using the ultrasonic transducers in the high frequency area from 20 to 200 kHz. Consequently, it was found that the second-mode vibration as well as the first-mode should be considered in the high frequency area. It was also confirmed that the second-mode vibration influenced deeply as the radial thickness became thin.
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© 2016 The Society for Experimental Mechanics, Inc.
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Tamaogi, T., Sogabe, Y. (2016). Longitudinal Wave Propagation Including High Frequency Component in Viscoelastic Bars. In: Song, B., Lamberson, L., Casem, D., Kimberley, J. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-22452-7_12
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DOI: https://doi.org/10.1007/978-3-319-22452-7_12
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-22451-0
Online ISBN: 978-3-319-22452-7
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