High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface ExpansionBudinski, Vedran (Avtor) Njegovec, Matej (Avtor) Pevec, Simon (Avtor) Macuh, Boris (Avtor) Đonlagić, Denis (Avtor) optical fiber sensorscorrosionimpact of corrosionoptic sensorsThis 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.John Wiley & Sons20232024-02-09 12:18:32Članek v reviji87030UDK: 535COBISS_ID: 160973827DOI: 10.1155/2023/9972511ISSN pri članku: 1545-2263slCopyright © 2023 Vedran Budinski et al.