Related Experiment Video
Updated: Apr 28, 2026

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
Published on: January 31, 2025
Computation of leaky guided waves dispersion spectrum using vibroacoustic analyses and the Matrix Pencil Method: a
M Mazzotti1, I Bartoli1, G Castellazzi2
1Civil, Architectural & Environmental Engineering (CAEE) Department, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, USA.
Abstract:
The paper aims at validating a recently proposed Semi Analytical Finite Element (SAFE) formulation coupled with a 2.5D Boundary Element Method (2.5D BEM) for the extraction of dispersion data in immersed waveguides of generic cross-section. To this end, three-dimensional vibroacoustic analyses are carried out on two waveguides of square and rectangular cross-section immersed in water using the commercial Finite Element software Abaqus/Explicit. Real wavenumber and attenuation dispersive data are extracted by means of a modified Matrix Pencil Method. It is demonstrated that the results obtained using the two techniques are in very good agreement.
Related Concept Videos
Standing Waves in a Cavity
Bewley Lattice Diagram
Sound as Pressure Waves
The pressure fluctuation depends on the difference in displacements between the successive points in the...
Deriving the Speed of Sound in a Liquid
The speed of sound in fluids can be derived by considering a mechanical wave...
Traveling Waves: Lossless Lines
Electromagnetic Wave Equation
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...

