EpsilonSensor – Distributed Fiber Optic Strain Sensor for Structural Health Monitoring
EpsilonSensor is the world’s first composite Distributed Fiber Optic Sensor (DFOS) with a strain range up to ±4% and elasticity of 3 GPa, ensuring zero influence on the monitored structure. Its advanced composite design provides unmatched accuracy in strain and crack measurement along the entire length. Lightweight, flexible, and easy to install, EpsilonSensor is ideal for laboratory research, concrete structures, and embedded structural health monitoring applications.
OVERVIEW
Description
EpsilonSensor – Distributed Fiber Optic Strain Sensor for Structural Health Monitoring
Key Advantages
- Full-Length Strain and Crack Detection – Measures strain continuously along the entire fiber length with optional temperature compensation for precise monitoring.
- Zero Structural Interference – Ultra-flexible sensor design ensures negligible stiffness and no influence on the behavior of the monitored element.
- Monolithic Fiber Construction – A uniform section with no intermediate layers guarantees high accuracy and repeatable results.
- High Spatial Resolution – Detects even micro-cracks in concrete with sharp, localized precision for reliable damage assessment.
- Easy, Fast Installation – Lightweight sensor supplied on reels, ready to deploy directly on site or in laboratory setups.
- Exceptional Durability – Resistant to harsh environments, electromagnetic interference, and lightning strikes, ensuring long-term performance.
Applications
- Structural Health Monitoring (SHM) of bridges, tunnels, dams, buildings, and other critical infrastructure.
- Laboratory Research – Ideal for detailed crack propagation studies in reinforced or prestressed concrete.
- Geotechnical Monitoring – Effective in assessing strain behavior in landslide and mining zones.
- Civil and Industrial Projects – Suitable for long-term monitoring of materials and components under stress.
Technical Overview
The application of Distributed Fiber Optic Sensing (DFOS) technology enables high-resolution strain measurements over the full sensor length, with spatial resolution starting at 5 mm.
The EpsilonSensor delivers quantitative and qualitative insights into structural performance, accurately locating cracks and estimating their width under changing environmental conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Strain Measurement Resolution | 1.0 µɛ |
| Strain Measurement Range | ±4% |
| Elastic Modulus | 3 GPa |
| Operating Temperature | –20 °C to +80 °C (extended range on request) |
| Sensor Diameter | Ø 3 mm (standard) |
| Sensor Weight | 13 kg/km (Ø 3 mm) |
| Sensor Material | PLFRP (Polyester Fiber + Epoxy) |
| Scattering Principle | Rayleigh, Brillouin, or Raman |
| Delivery Format | Coils or straight sections |
| Available Length | Custom length on request |

















