We develop software products and experimental test rigs to model or characterize sound absorbing materials or sound sources.

Experimental test rigs

Matelys provides turnkey equipments developed by Mecanum or SoundInsight for full elastic and acoustic characterizations of porous materials used for acoustic applications.
These equipments include:

a multi-purpose small handheld microphone array for sound intensimetry and the measurement of the sound pressure and the in-situ sound absorption of materials
test rigs for the measurement of the static air-flow resistivity following ISO 9053-1 and the permeability of fabrics following ISO 9237
test rig for the measurement of the static air-flow resistivity at high velocities (10 to 280 cm/s with a pressure drop up to 17 kPa)
porosity-meter (to access the open porosity)
tortuosity-meter (to access the tortuosity)
impedance tubes (to measure surface or bulk properties of acoustical materials)
Acoustic cabin for sound absorption and transmission loss tests on small samples
Quasistatic mechanical analyser (to access the elastic parameters of acoustical porous media)
Oberst beam device and acquisition system to estimate Young's moduli and loss factors of visco-elastic materials (following ISO 6721-3 & ASTM E-756-04)
A double-side Oberst beam device to estimate Young's moduli and loss factors of visco-elastic materials
3D acoustic camera with real-time imaging capacity
A Brake Damping Test Bench (BDT) for brake pads insulators following the SAE J3001 standard.
accessories to these equipments : circular cutters, a climatic chamber, a weather station, anechoic terminations for impedance tubes, digital pistons...

Matelys also develops on-demand experimental test rigs.

↑ SonoCat, a handheld microphone array for sound intensimetry, measurements of the sound pressure and the in-situ sound absorption of materials. PDF documentation

↑ Impedance tube (different diameters or cross-sections available as well as different configurations: absorption and transmission). PDF doc for impedance tube (ISO 10534-2, ASTM E1050, ASTM E2611). PDF doc for high SPL tube

↑ Impedance tube with a square cross-section (available configurations: absorption and transmission; ISO 10534-2, ASTM E1050, ASTM E2611). PDF documentation