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Multi-element capacitive-ultrasonic transducer with air-coupling and variable focusing

Domains Food
Energy
Mobility

Technology Sensors

Applications

  • Non-destructive test (NDT) or evaluation of various kind of materials (metals, polymers, composites, wood...).
  • NDT is integrated into existing systems for monitoring, pilotage and support systems
    in aeronautics, agri-food, automotive, shipbuilding, mechanics, metallurgy, nuclear, Transport...
  • Materials characterization through NDT has two main applications:
    • Detection and dimensioning of defects (in a part or assembly);
    • The indirect measurement of material characteristics (strength, hardness…).

Description

This system is intended for the NDT or evaluation by ultrasound in transmission, without coupling medium (in air), of various kind
of materials (metals, polymers, composites, wood ...); with a high lateral spatial resolution and a wide frequency bandwidth.

 

Frequency (kHz)

 Diameter (mm)

Focal Length (mm)

Height (mm)

 

Market competitors

100

25

/

45

200

25

/

45

200

50

150

45

MEACUT

I2M

120 to 580 (-20 dB)

230 to 470 (-6dB)

110
(
16 elements)

40 to 180

 

30

 

Benefits

  • High spatial resolution which favors detection and localization of small (millimeter) defects,
  • Wide and variable frequency band (analysis of different thicknesses and different materials),
  • Focusing distance adjustable in dynamics,

Maturation

The maturation with Aquitaine Science Transfert aims to develop a functional prototype

Inventors

Christine BIATEAU
Michel CASTAINGS
Mathieu RENIER

Institut de Mécanique et d'Ingénierie de Bordeaux (I2M, UMR 5295)

IP

This technology is protected by patents

Contact

Matthieu AYFRE
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