A new era of pollution requires an important focus on the conservation of archaeological sites and monuments. In the last years great efforts were required to develop various sensors for different tasks. The fiber Bragg grating (FBG) was one of the most studied thanks to the multitude of applications and the surprising performances. An original fiber optic sensor that combines the fiber Bragg gratings with a pH-responsive polymer coating for monitoring the pH of the rains on critical and prestigious monuments is proposed. The core consists of four different materials, which makes the sensor very innovative and allowing it to reach a high sensitivity. In this study, the setup arrangement of the optical sensor is modeled with COMSOL Multiphysics (Wave Optics Module), based on the FEM (Finite Element Method) solver. Monitoring the pH of water can be used by experts to predict and control the corrosion phenomenon of specific materials, especially limestone and marble, thus scheduling the timely restoration.

FBG multifunctional pH sensor - Monitoring the pH rain in cultural heritage / Dinia, Lorenzo; Mangini, F.; Muzi, Marco; Frezza, F.. - In: ACTA IMEKO. - ISSN 2221-870X. - 7:3(2018), pp. 24-30. [10.21014/acta_imeko.v7i3.560]

FBG multifunctional pH sensor - Monitoring the pH rain in cultural heritage

DINIA, LORENZO;F. Mangini;MUZI, MARCO;F. Frezza
2018

Abstract

A new era of pollution requires an important focus on the conservation of archaeological sites and monuments. In the last years great efforts were required to develop various sensors for different tasks. The fiber Bragg grating (FBG) was one of the most studied thanks to the multitude of applications and the surprising performances. An original fiber optic sensor that combines the fiber Bragg gratings with a pH-responsive polymer coating for monitoring the pH of the rains on critical and prestigious monuments is proposed. The core consists of four different materials, which makes the sensor very innovative and allowing it to reach a high sensitivity. In this study, the setup arrangement of the optical sensor is modeled with COMSOL Multiphysics (Wave Optics Module), based on the FEM (Finite Element Method) solver. Monitoring the pH of water can be used by experts to predict and control the corrosion phenomenon of specific materials, especially limestone and marble, thus scheduling the timely restoration.
Fiber Bragg grating; pH sensor; hydrogel; cultural heritage monitoring; FEM
01 Pubblicazione su rivista::01a Articolo in rivista
FBG multifunctional pH sensor - Monitoring the pH rain in cultural heritage / Dinia, Lorenzo; Mangini, F.; Muzi, Marco; Frezza, F.. - In: ACTA IMEKO. - ISSN 2221-870X. - 7:3(2018), pp. 24-30. [10.21014/acta_imeko.v7i3.560]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1176983
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