Overview

High elasticity due to strain-induced phase transformation

• max. reversible strain: 8 % (80,000 µm/m)
• proof for 10⁶ cycles at 1 % (10,000 µm/m) strain
  
• min. gauge factor: 5
  
• transverse sensitivity (GFRP): -0.09
   

Simple sensor integration into polymers and composites

• embedment of sensor structures via injection molding, laminating and infiltration
   

Minimum thermal drift compared to carbon fibre sensors

Simple data acquisition by means of electric resistance changes

Extremely long lifetime

Strain gauges, textile + thin film sensors

• elastic up to 0.2 % strain (2,000 µm/m)
  
• limited fatigue strength in plastic components
  
• fatigue break for higher strain amplitudes
   

Faser-Bragg-grating sensors

• expansive and huge measurement instrumentation
  
• not useful for small and mobile applications
   

Carbon fibre sensors

• low gauge factor
• strong temperature dependence