Numerical and experimental analysis of the reliability of strain measured by surface‐mounted fiber‐optic sensors based on Bragg gratings

Матвеенко, В. П.; Serovaev, Grigorii; Kosheleva, Natalia; Fedorov, Andrey

doi:10.1002/stc.3142

Cited by 2 publications

(1 citation statement)

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“…Te above-described sensors are however appropriate only for detecting the early stages of corrosion. Another feasible approach employing FBGs for structural health monitoring in composite structures presents measurements of nonuniform strain [31][32][33][34][35][36][37][38][39][40][41][42][43]. In these cases, the host material was bent or elongated with an unequally distributed outer force, thus instigating strain perturbations with the same magnitude.…”

Section: Introductionmentioning

confidence: 99%

High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface Expansion

Budinski

Njegovec

Pevec

et al. 2023

Structural Control and Health Monitoring

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This paper presents a fiber optic sensor for the detection of corrosion processes that occur on metal surfaces. In the proposed sensor design, a sensing fiber with an inscribed high-order Bragg grating is attached to the observed metal surface. A broadening of high-order Bragg grating spectral characteristics is observed and used to detect small and highly localized longitudinal strain variations that occur along the fiber as a result of corrosive rust flakes’ formations beneath the sensing fiber. The proposed approach provides a straightforward fabrication method, the possibility for unobtrusive mounting, including mounting of the sensor beneath the corrosion-protective layers, and consistent corrosion detection yields.

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