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Laser Laboratory for Ultrasonic Measurements

Laser-based ultrasonic measurements for nondestructive testing are performed in this laboratory.

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The laser laboratory for ultrasonic measurements within the research group Mechanics of Adaptive Systems facilitates contactless vibration measurements in sub-nanometer range. The laboratory is equipped with a highly sensitive laser-based measurement system, which enables high precision scanning of different specimens owing to automated positioning system in the range up to 800 x 1600 x 350mm. This system is employed for the research of reconnaissance possibilities in mechanized tunneling (Collaborative Research Center SFB 837, Subproject A2) and for non-destructive testing of numerous materials with different surface coarseness.

 

Application fields

  • Vibration measurement in ultrasonic range (100kHz - 50MHz)
  • Contactless detection of displacements in sub-nanometer range
  • Nondestructive Testing (NDT)
  • Damage detection, identification of inhomogeneities, obstacles and inclusions

 

equipment

  • Laser system Quartet Bossa Nova Technologies with Fiber-Head for easy positioning
  • Optical table Newport for vibration isolation with automatic level regulation
  • Arbitary true waveform generator (Agilent)
  • Data aquisition system (National Instruments)
  • Power amplifer (E&I)
  • Ultrasonic transducers 0,1 - 10 MHz
  • Positioning system (in-house development, research group Mechanics of Adaptive Systems)