Related Experiment Video
Updated: Dec 23, 2025

Optimized Sealing Process and Real-Time Monitoring of Glass-to-Metal Seal Structures
Published on: September 2, 2019
Concrete Crack Monitoring Using a Novel Strain Transfer Model for Distributed Fiber Optics Sensors
Antoine Bassil1,2, Xavier Chapeleau1, Dominique Leduc3
1COSYS-SII, I4S Team, University Gustave Eiffel, Inria, F-44344 Bouguenais, France.
Abstract:
In this paper, we study the strain transfer mechanism between a host material and an optical fiber. A new analytical model handling imperfect bonding between layers is proposed. A general expression of the crack-induced strain transfer from fractured concrete material to optical fiber is established in the case of a multilayer system. This new strain transfer model is examined through performing wedge splitting tests on concrete specimens instrumented with embedded and surface-mounted fiber optic cables. The experimental results showed the validity of the crack-induced strain expression fitted to the distributed strains measured using an Optical Backscattering Reflectometry (OBR) system. As a result, precise estimations of the crack openings next to the optical cable location were achieved, as well as the monitoring of the optical cable response through following the strain lag parameter.
Related Concept Videos
Fiber Reinforced Concrete
Measurements of Strain
Types of Non-structural Cracks in Concrete
Plastic shrinkage cracks typically form within hours after the concrete is poured. The concrete's surface dries faster than the bottom, creating tensile stress that the still-plastic concrete cannot withstand, leading to diagonal or randomly patterned cracks on the concrete surface.
Microcracking in Concrete
Design Example: Strain Gauge Bridge or Wheatstone Bridge
Non-destructive Tests for Concrete Strength

