Related Experiment Video
Updated: Jun 2, 2026

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
Published on: January 31, 2025
Equivalent contributing depth investigated by a lateral wave with axial transmission in viscoelastic cortical bone
Guillaume Haïat1, Salah Naili, Mai Ba Vu
1CNRS, Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, UMR 8208 CNRS, 94010 Créteil Cedex, France. guillaume.haiat@univ-paris-est.fr
Abstract:
Cortical bone is a viscoelastic heterogeneous medium which may be assessed with axial transmission. This work aims at evaluating the average depth investigated by the lateral wave for radial variations of material properties in relatively thick cortical bone. The equivalent contributing depth (ECD) is derived from the finite element simulation results for spatial variations of a viscoelastic coefficient (η(11)) and of porosity. A value of ECD equal to around 1.6 mm is obtained for a spatial variation of η(11). The method fails to predict accurate values of the ECD for a spatial variation of porosity, because all parameters vary simultaneously.
Related Concept Videos
Sound as Pressure Waves
The pressure fluctuation depends on the difference in displacements between the successive points in the...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Deriving the Speed of Sound in a Liquid
The speed of sound in fluids can be derived by considering a mechanical wave propagating...
Thin-Walled Hollow Shafts
Dynamic Modulus of Elasticity of Concrete
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by a...
Eccentric Axial Loading in a Plane of Symmetry

