ArticleSensors (Basel, Switzerland)2020
Experimental and Numerical Investigation on the Strain Response of Distributed Optical Fiber Sensors Bonded to Concrete: Influence of the Adhesive Stiffness on Crack Monitoring Performance.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 31 citations in OpenAlex.
- Advances in Data Pre-Processing Methods for Distributed Fiber Optic Strain Sensing.Sensors (Basel, Switzerland) · 2024Article
- Investigation of the Robust Integration of Distributed Fibre Optic Sensors in Structural Concrete Components.Sensors (Basel, Switzerland) · 2024Article
- Temperature and Humidity Stability of Fibre Optic Sensor Cables for High Resolution Measurements.Sensors (Basel, Switzerland) · 2023Article
- Crack Shape Coefficient: Comparison between Different DFOS Tools Embedded for Crack Monitoring in Concrete.Sensors (Basel, Switzerland) · 2023Article
- The Smart Nervous System for Cracked Concrete Structures: Theory, Design, Research, and Field Proof of Monolithic DFOS-Based Sensors.Sensors (Basel, Switzerland) · 2022Article
- Application of Distributed Optical Fiber Sensing Technology to the Detection and Monitoring of Internal Swelling Pathologies in Massive Concrete Blocks.Sensors (Basel, Switzerland) · 2022Article
- Environmental Durability of an Optical Fiber Cable Intended for Distributed Strain Measurements in Concrete Structures.Sensors (Basel, Switzerland) · 2021Article
- A General Solution to Determine Strain Profile in the Core of Distributed Fiber Optic Sensors under Any Arbitrary Strain Fields.Sensors (Basel, Switzerland) · 2021Article
- A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring.Sensors (Basel, Switzerland) · 2021Review
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The present study investigated the strain response of a distributed optical fiber sensor (DOFS) sealed in a groove at the surface of a concrete structure using a polymer adhesive and aimed to identify optimal conditions for crack monitoring. A finite element model (FEM) was first proposed to describe the strain transfer process between the host structure and the DOFS core, highlighting the influence of the adhesive stiffness. In a second part, mechanical tests were conducted on concrete specimens instrumented with DOFS bonded/sealed using several adhesives exhibiting a broad stiffness range. Distributed strain profiles were then collected with an interrogation unit based on Rayleigh backscattering. These experiments showed that strain measurements provided by DOFS were consistent with those from conventional sensors and confirmed that bonding DOFS to the concrete structure using soft adhesives allowed to mitigate the amplitude of local strain peaks induced by crack openings, which may prevent the sensor from early breakage. Finally, the FEM was generalized to describe the strain response of bonded DOFS in the presence of crack and an analytical expression relating DOFS peak strain to the crack opening was proposed, which is valid in the domain of elastic behavior of materials and interfaces.
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