Estimation of the Rod Velocity in Wood using Multi-frequency Guided Wave Measurements

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Date
2023-01
DOI
10.1016/j.apacoust.2022.109108
Open Access Location
https://www.sciencedirect.com/science/article/pii/S0003682X22004820
Authors
Legg M
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
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Abstract
This study presents a new approach for measuring the acoustic “rod velocity” in wood using guided wave measurements. The approach fits the acoustic guided wave longitudinal L(0,1) wave mode dispersion curve, through experimental guided wave phase velocity measurements taken over a range of frequencies. The rod velocity is obtained by measuring the phase velocity of the fitted L(0,1) wave mode dispersion curve at zero frequency. This technique is used to obtain rod velocity measurements for cylindrical wood and aluminium samples. The same approach was also performed on resonance measurements at a wide range of harmonics. These rod velocities are then compared to acoustic velocities obtained using the traditional time of flight and resonance methods.
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(c) The Author/s
Keywords
Citation
Applied Acoustics, 2022
URI
https://hdl.handle.net/10179/17851
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Journal Articles