Identification of Acoustic Modeling Parameters of Porous and Solid Materials
During the process of designing acoustic treatments including porous materials, the definition of the modeling parameters of these materials is a critical step.
FOAM-X allows you to extract the following parameters:
Main Advantages
Exploit All FOAM-X Possibilities!
Works with all standards related to impedance and transmission tube
Characterizes several types of open-cell porous and solid materials
Foam | Fibrous | Perforated sheet | Resistive screen | Fabric | Isotropic membrane
Characterizes three different types of structure
Rigid | Limp | Elastic
Considers the boundary conditions of the assembly of the material
Laterally bonded | Laterally sliding | Peripheral air leaks
More Pictures and Videos
Discover What FOAM-X Looks Like! (click to expand)
Fabric Inverse Method
Database Module
FAST Sensitivity Module
JCAL Equivalent Fluid Indirect Method
Simulation Module
Biot Poroelastic Inverse Method
JCA Equivalent Fluid Inverse Method
Isotropic Solid Inverse Method
Perfect For
Profit from a Perfect Integration of FOAM-X with Mecanum’s Measuring Instruments!
PHI | Porosity and Density Meter
QMA | Mechanical Analyzer
SIGMA | Airflow Resistivity Meter
TOR | Tortuosity Meter
TUBE | Impedance Tubes
And Even More Functions!
Never Ending Functions!
Identification of Acoustic Modeling Parameters
- Calculates the mean and standard deviation of the data set.
- Corrects tube and measurement conditions (temperature, atmospheric pressure and relative humidity).
- The user can provide parameters to improve convergence (density, resistivity, porosity, tortuosity and other parameters).
- Identification according to three types of skeleton (rigid, flexible or elastic).
- Identification over a range of frequencies (min, max).
Display, Simulation and Sensitivity Analysis
- Validation of the parameters obtained by comparison of simulations using analytical or numerical poroelastic or solid models (finite elements) with impedance/transmission tube measurements.
- Plots both predicted and measured data (if available) of:
- Export data to csv file or clipboard,
- Simulates the effects of boundary conditions and lateral acoustic leakage in tubes by the axisymetric finite element method (axiFEM).
- Predicts all the acoustic properties in the case of excitation by a plane wave of normal incidence such as: absorption coefficient, attenuation index, surface and characteristic impedance, number of complex wave, effective dynamic density and effective bulk modulus.
- Takes into account:
Database
- Retains materials identified by FOAM-X or your own method.
- Searches for materials according to different criteria (e.g. price, porosity, resistivity to the passage of air, thickness, etc.)
- Compares two materials.