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

Year

2023

Type(s)

Journal Article

Author(s)

Bakar, Adli Hasan Abu and Legg, Mathew and Konings, Daniel and Alam, Fakhrul

Source

Applied Acoustics, 202: 109108, 2023

Url(s)

https://doi.org/10.1016/j.apacoust.2022.109108

BibTeX

BibTeX

BibTeX

@article{BAKAR2023109108, title = {Estimation of the Rod Velocity in Wood using Multi-frequency Guided Wave Measurements}, journal = {Applied Acoustics}, volume = {202}, pages = {109108}, year = {2023}, issn = {0003-682X}, doi = {https://doi.org/10.1016/j.apacoust.2022.109108}, url = {https://www.sciencedirect.com/science/article/pii/S0003682X22004820}, author = {Bakar, Adli Hasan Abu and Legg, Mathew and Konings, Daniel and Alam, Fakhrul}, keywords = {Wood, Aluminium, ToF, Resonance, Guided waves, Dispersion curves}, 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.}