Smart FRP components for strain- based bridge health monitoring
An innovative DFOS-based monitoring system was implemented in Poland’s first fully composite bridge (featuring composite girders and slabs). Prior to in-situ installation, extensive research on analogous structural components was conducted under laboratory conditions to ensure reliability. DFOS strain fibres were installed on the surface of both the girders and slabs. The system’s design allowed us to utilise the idea of strain sensing by EpsilonSensor and displacement sensing by the 3DSensor.
DFOS Sensors Installed: EpsilonSensor and 3DSensor
Project challenges
Benefits of using the DFOS monitoring system
Results of using the DFOS monitoring system
The DFOS-based measurement system was used to verify the FRP components’ (girder & slab) structural performance during mechanical load tests. Thanks to the negligible costs of the DFOS fibres, there was no need to limit their number. The figure below summarises example strain results from a sinusoid measurement path, which allowed for the simultaneous analysis of strains over different directions (both longitudinal and transverse).
Example results
Recomendations (optional)
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John Doe
Project partner
