This symposium is divided into 6 half day special non parallel
sessions. Each session comprises an introductory 55' plenary lecture
focused on the state of the art about the treated subject together
with more specific 25' conferences which can help to give deeper
insights into the tackled issue.
Four important topics have been selected. Example of the questions to be discussed in each topic are provided below.
- Propagation models: What is the state of the art about the
sound propagation in porous media ? What are the different models
(macroscopic or microstructural) and their limits ? What is the
effect of the anisotropy, the skeleton viscoelasticity on the
sound propagation within the material ?
- Characterisation methods (acoustical and elastic parameters):
Models involve a set of parameters which need to be
determined. What are the methods (direct, inverse) available to
assess them ? What are their robustness ? What are the sources of
uncertainties ? How do we measure anisotropic properties,
viscoelastic properties ?
- Numerical prediction methods for systems involving porous
media: What are the analytical and numerical techniques available
to predict the response of complex systems involving porous
materials, from low to high frequency ? Which model complexity do
we need to describe the effect of porous materials ? What is the
effect of anisotropy, of the skeleton viscoelasticity ? What is
the computational cost ? What are the convergence criteria ? What
are the problems encountered when dealing with modelling in
- Design of efficient acoustical materials: What are the
innovative solutions for noise control (absorption, sound
insulation, damping) ? What are the micro-macro links to design
high acoustical performance porous materials ?