Experimental Modelling & Acoustics Tools
This laboratory operates at both audible and ultrasonic frequencies, and is composed as follows:
- LF (0-150kHz) transmitter-receiver chain, (amp, preamp, filters,...)
- Bruel & Kjaer omnidirectional transducers (sources and receivers)
- Arbitrary function generator for the source signal
- HF transceiver chain (20 kHz - 1GHz), Sofranel transceiver (pulse signal)
- Directional RF transducers (300-750kHz), (500-1MHz)
- Precision mechanical and electrical frame with 4 axes (x,y,z,T), controlled by microprocessor under labview
- 3 mini tanks (50x50x50cm)
- An acoustic tank (2×1.6x 2m) + water pump, filters etc. with hoist (500kg)
- 1 biprocessor under Linux for our calculations and modelling.
![](https://www.cerege.fr/wp-content/uploads/2023/02/ecosystem-sediment-GS-2a.jpg)
Marine sedimentary ecosystem
Study of sedimentary ecosystems. Oceanic tank: fauna/sea/marine sediment interface.
![](https://www.cerege.fr/wp-content/uploads/2023/02/Multiple_Scatering-1024x640.jpg)
Acoustic study of multiple scattering in granular media
Acoustic tank operating at ultrasonic frequencies.
![](https://www.cerege.fr/wp-content/uploads/2023/02/photo-detect-racines.jpg)
Imaging of biophysical environments
Acoustic cells operating at audible frequencies for imaging biophysical (roots) or geophysical environments.
Thesis Benjamin MARY (2015)
![](https://www.cerege.fr/wp-content/uploads/2023/02/NDT_Modelisation_acoustique.jpg)
Acoustic tomography of porous heterogeneous rocks (carbonates)
Acoustic tanks operating at low frequencies. 4 axis mechanical and electrical design (x, y, z, theta)
Dawin BADEN's thesis 2017
![](https://www.cerege.fr/wp-content/uploads/2023/02/canal-part3-1024x640.jpg)
Tiltable hydraulic channel with variable flow rate
Study of sediment transport, ocean or river environment, ecosystems, pollution, ... hydrothermal systems