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Related Experiment Video

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Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Published on: January 31, 2025

Analytical framework for modelling body-wave scattering and diffusion in concrete.

Hao Cheng¹, Katrin Löer², Max A N Hendriks³

¹Department of Engineering Structures, Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, the Netherlands.

|May 12, 2026

Summary

This study introduces a new framework for modeling body-wave scattering in concrete. It links scattering properties to concrete

Keywords:

Concrete Diffuse waves Heterogeneous materials Multiple scattering

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Area of Science:

Materials Science
Acoustics
Civil Engineering

Background:

Modeling wave scattering in concrete is complex.
Existing methods often use abstract parameters.
Microstructural details are crucial for accurate predictions.

Purpose of the Study:

To develop a concrete-specific analytical framework for body-wave scattering.
To parameterize scattering theory using measurable concrete attributes.
To link scattering predictions to ultrasonic diffusivity.

Main Methods:

Tailored multiple-scattering theory to concrete microstructure.
Used coarse aggregate size, volume fraction, and material contrast as inputs.
Employed a two-phase spatial statistical formulation.

Main Results:

Derived closed-form expressions for scattering cross-sections.
Linked scattering to ultrasonic diffusivity via diffuse wave theory.
Validated predictions with experimental data for geopolymer and ordinary concrete.

Conclusions:

The framework enables quantitative computation of body-wave scattering from concrete composition.
Provides a physically grounded basis for interpreting diffuse wave phenomena.
Eliminates the need for ad hoc fitting parameters in scattering analysis.