Monitoring rotor blades of wind power plants

Monitoring structural components of aircrafts

Fields of use

Numerous applications in the automotive industry, in wind power plants, in the mechanical and plant engineering, in sports equipment and in plastic components are possible.


Sensor technology

  • substitution of conventional strain gauges (DMS)
     

Fibre-reinforce plastics / light weight construction

  • pipelines, tubes, pressure vessels, sports equipment, orthoses, vehicles, springs, mechanical characterisation/mechanical testing
  • application sample: strain sensor for rotor blade monitoring of wind power plant (8 mm x 10 mm, 120 Ohm, gauge factor 5.4)


Plastic / elastomer components

  • membranes
  • control elements / panels


Textile / wood / concrete applications

  • slope stabilisations
  • wooden beams
  • concrete construtions
© Fotolia

Technology demonstrators

Sensoric GFRP bending beam

A SMA sensor was embedded into a bending beam made of glass fibre-reinforced plastic. Due to the excitation of the vibrational motor the bending beam oscillates in its eigenfrequency. The SMA sensor and its amplifier monitor the bending strain of the oscillation. When stopping the oscillation, the sensor signal amplitude is reduced. A manual bending of the beam changes the level of the sensor signal according to the bending strain

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Privacy warning

With the click on the play button an external video from wwww.youtube.com is loaded and started. Your data is possible transferred and stored to third party. Do not start the video if you disagree. Find more about the youtube privacy statement under the following link: http://www.youtube.com/t/privacy_at_youtube

Pultrusion profile with embedded SMA strain sensor

A glass-fibre reinforced pultrusion profile (GFRPP) with an embedded strain sensor made of shape-memory alloy (SMA) wires is shown. The bending of the profile can be monitored by means of the SMA strain sensor. The SMA sensor is as fatigue resistant as the GFRPP, more elastic than the profile material and 3 time more sensitive compared to regular strain gauges. The continuous Integration of the SMA strain sensor in the pultrusion process is very cost efficient.