[HTML][HTML] Measurement of stiffness of standing trees and felled logs using acoustics: A review

M Legg, S Bradley - The Journal of the Acoustical Society of America, 2016 - pubs.aip.org
This paper provides a review on the use of acoustics to measure stiffness of standing trees,
stems, and logs. An outline is given of the properties of wood and how these are related to …

The computation of dispersion relations for three-dimensional elastic waveguides using the scaled boundary finite element method

H Gravenkamp, H Man, C Song, J Prager - Journal of Sound and Vibration, 2013 - Elsevier
In this paper, a numerical approach for the computation of dispersion relations for three-
dimensional waveguides with arbitrary cross-section is proposed. The formulation is based …

Genetic algorithms-based inversion of multimode guided waves for cortical bone characterization

N Bochud, Q Vallet, Y Bala, H Follet… - Physics in Medicine …, 2016 - iopscience.iop.org
Recent progress in quantitative ultrasound has exploited the multimode waveguide
response of long bones. Measurements of the guided modes, along with suitable waveguide …

In-plane backward and zero group velocity guided modes in rigid and soft strips

J Laurent, D Royer, C Prada - The Journal of the Acoustical Society of …, 2020 - pubs.aip.org
Elastic waves guided along bars of rectangular cross sections exhibit complex dispersion.
This paper studies in-plane modes propagating at low frequencies in thin isotropic …

Complexity of band structures: Semi-analytical finite element analysis of one-dimensional surface phononic crystals

IA Veres, T Berer - Physical Review B—Condensed Matter and Materials …, 2012 - APS
Band structures of surface phononic crystals with one-dimensional periodicity are
investigated in this paper. Real and complex dispersion relations of surface acoustic waves …

Ultrasonic guided wave measurement in a wooden rod using shear transducer arrays

AHA Bakar, M Legg, D Konings, F Alam - Ultrasonics, 2022 - Elsevier
Research related to acoustic/ultrasonic guided wave testing in wood is still at an early stage.
This paper describes the first study to perform ultrasonic guided wave measurements in a …

[图书][B] Numerical methods for the simulation of ultrasonic guided waves

H Gravenkamp - 2014 - opus4.kobv.de
Ultrasonic guided waves offer a wide range of applications in fields such as non-destructive
testing, structural health monitoring or material characterization. They can be excited in thin …

[HTML][HTML] Identification of the constitutive parameters of strain gradient elasticity using guided wave propagation in architectured materials

G Rosi, N Bochud, VH Nguyen, N Auffray - Mechanics Research …, 2024 - Elsevier
In this work we introduce an identification procedure for the numerical assessment of the
constitutive parameters of strain gradient elasticity (SGE) for architectured materials. The key …

Axial Transmission: Techniques, Devices and Clinical Results

N Bochud, P Laugier - Bone Quantitative Ultrasound: New Horizons, 2021 - Springer
Recent progress in quantitative ultrasound have sparked increasing interest towards the
measurement of long cortical bones (eg, radius or tibia), because their ability to sustain …

The effects of dispersion on time-of-flight acoustic velocity measurements in a wooden rod

AHA Bakar, M Legg, D Konings, F Alam - Ultrasonics, 2023 - Elsevier
The stiffness of wood can be estimated from the acoustic velocity in the longitudinal
direction. Studies have reported that stiffness measurements obtained using time-of-flight …