Ultrasound

Technical equipment

© Fraunhofer IKTS

Robot measuring cell of Fraunhofer IKTS.

© Fraunhofer IKTS

Four-axis manipulator.

Robot measuring cell

  • Fast implementation of various measurement methods and measurement systems
  • Adaptation of various tools for scanning, scratching, cutting, drilling, welding or bonding
  • Accuracy of the robot: 80 μm target point difference
  • Accuracy of the camera: 20 μm distortion at 800 mm focal point
  • Surface pre-scan (optical): stereo camera and software
  • Path planning: with software (parametric with gradient, compensation, caster angle, bearing angle etc.)
  • Measuring speed: approx. 500 mm/s at 0.25 mm pitch
  • Impedance image: 100 x 100 mm at 0.25 mm pitch: 3 min

 

Ultrasonic microscope

  • Scan area: up to 310 x 310 mm
  • Position accuracy and resolution: < 10 μm
  • Lateral resolution: < 15 μm
  • Vertical resolution: < 30 nm (crack thickness)
  • Ultrasonic frequency: up to 200 MHz
  • Pulse-echo and permeation technology
  • Single samples and sample series

 

Ultrasonic scan carriage

  • Extensive scans over measuring areas of up to 1 m width
  • Use of various ultrasonic transducers
  • Resolution determined by the frequency range of the sensors
  • Automated scanning of surfaces

 

Four-axis manipulator for special tests

  • Three linear axes, one rotary disk, various (rotatable) plunge basins
  • Immersion and contact technology
  • Attainable object parameters:
    • Weight: less than 100 kg
    • Geometry: smaller than 500 x 300 x 300 mm³
  • Various ultrasonic electronic units with numerous parameters
  • Free access to raw data (compliant with various analysisalgorithms)
  • Can be adapted for many sensors and mechanic configurations
  • Methods of sound field characterization: beads in water and electrodynamic probes

 

Ultrasound goniometer HUGO III

  • Analysis of Rayleigh wave dispersion in layered materials
  • Analysis of Lamb waves at thin structures
  • Determination of layer thickness
  • Experiments with volume waves

 

Acoustic Intensity Measurement System – AIMS

  • Determination of acoustic fields in water
  • Five-axis hydrophone positioning
  • Used for characterization and validation of transducer de­signs