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EPSILON SENSOR: DISTRIBUTED FIBER OPTIC SENSOR (DFOS) TECHNOLOGY
THE WORLD’S FIRST COMPOSITE DFOS SENSOR WITH STRAIN RANGE UP TO 4% AND ELASTICITY (E = 3 GPA) NOT INFLUENCING THE STRUCTURAL BEHAVIOR OF MONITORED STRUCTURE
EpsilonSensor enables accurate strains and precise crack measurements over its entire length due to the perfect bonding with the specimen. Specially selected composite material provides unique strain reading precision and sensitivity. EpsilonSensor is a perfect solution for laboratory applications, designed for direct embedding into the newly-designed structural members (made of concrete or soil) or to be installed within existing structural members (e.g. reinforced or prestressed concrete girders). Lightweight, low bending radius and extremely low stiffness allow the sensor to be installed easy and to not influence the behavior of the specimen.
OVERVIEW
Description
SENSOR ADVANTAGES
- STRAIN AND CRACK MEASUREMENT ALONG THE ENTIRE LENGTH of the sensor, optionally also temperature
- NO SENSOR INFLUENCE on the monitored structural member (negligible stiffness)
- MONOLITHIC SECTION WITH NO INTERMIDIATE LAYERS providing accurate readouts
- SHARP and PRECISE view of any local phenomena, especially cracks in concrete
- EASY INSTALLATION – lightweight sensor, ready to use when unrolled from the drum
- RESISTANT TO ENVIRONMENTAL CONDITIONS, including electromagnetic fields and lightning strikes
APPLICATIONS
- LABORATORY REASERCH – especially crack observation in concrete.
- STRUCTURAL HEALTH MONITORING of engineering structures.
- Reinforced and prestressed CONCRETE specimens.
- Essential in monitoring LANDSLIDES and MINING regions.
Application of DFOS strain Sensors for the structural health monitoring of real engineering structures allows for strain measurements over the entire length with a spatial resolution starting from 5 mm. The key thing is to use sensors that are accurate and reliable. EpsilonSensor provides new opportunities in the quantitative and qualitative assessment of strains and cracks in concrete. It allows for the precise detecting the cracks locations and estimating their actual width during changing environmental conditions over the long term.
TECHNICAL SPECIFICATIONS
| EPSILON SENSOR | |
|---|---|
| Strain measurement resolution | 1,0 µɛ |
| Strain measurement range | ±4% |
| Elastic modulus | 3 GPa |
| Operating temperature | -20 to +80°C (extended range on request) |
| Sensor diameter | standard Ø 3 mm |
| Sensor weight | 13 kg/km (for Ø 3 mm) |
| Sensor material | PLFRP (polyester fiber + epoxide) |
| Scattering used | Rayleigh, Brillouin or Raman |
| Method of delivery | coils or straight sections |
| Sensor length | any length made to order |
Datasheet
Brochure
