FOAM-X converts impedance tube measurements into the physical parameters your simulations need. Working from porous, fibrous, perforated, or fabric materials, it applies established acoustic models to recover a complete, accurate set of inputs, then hands them off to platforms like NOVA, VA One, COMSOL, and Hexagon. It is the bridge between what you measure in the lab and what you simulate on screen.
Complete parameter extraction
Recover:
✓ Open porosity (ϕ)
✓ Static airflow resistivity (σ)
✓ Tortuosity (α∞)
✓ Thermal and viscous characteristic lengths (Λ′ and Λ)
✓ Static thermal permeability (ko′)
✓ Young’s modulus (E)
✓ Poisson’s ratio (v)
✓ Structural loss factor (damping) (η)
Centralized workflow
Each FOAM-X project bundles in one place:
✓ Raw measurements
✓ Identified model parameters
✓ Acoustic performance predictions
✓ Sensitivity analysis
✓ Collaboration notes and annotations
Multiple acoustic models
JCA, JCA-Lafarge, the full Biot poroelastic model, plus specialized models for perforated plates and fabrics, several exclusive to FOAM-X.
Flexible data handling
Import from various impedance tube types and geometries, combine datasets for accuracy, load full impedance tube projects or paste from Excel.
Robust characterization
Fix known properties to guide inverse modeling, replicate test conditions, and include uncertainty quantification for reliable results.
Sensitivity analysis
Identify the most critical parameters as a function of frequency, so you know where accuracy matters most.
Step 1: Import
your impedance tube measurement data
Step 2: Identify
acoustic parameters using multiple models
Step 3: Analyze and visualize
the results and indicators
Step 4: Compare
results against measurement
Step 5: Export
to colleagues or other software
Coming soon.
Automotive industry
Characterize NVH materials from impedance tube data to feed accurate automotive simulations.
Aerospace industry
Recover the full lightweight absorbers parameter set, with uncertainty quantification, for weight-critical acoustic design.
Material manufacturers
Characterize new porous materials and hybrid composites, and use sensitivity results to optimize microstructure and produce datasheet-ready parameters.
Building
Characterize insulation and absorbing materials for accurate building-acoustics simulation.
Laboratories
Produce complete, simulation-ready material models from your impedance tube campaigns, and validate theoretical models against experiments.
Universities
Teach model-based inverse characterization and poroelastic modeling from real measurement data, for advanced teaching and publications.