The structural integrity of mechanical components is assessed by FBG sensors in many industrial fields. The FBG sensor has a relevant application at very high or low temperatures. To avoid the variability of the reflected spectrum and the mechanical properties degradation of the FBG sensor, metal coatings have been used to guarantee the grating’s integrity in extreme temperature environments. Particularly, at high temperatures, Ni could be a suitable selection as a coating to improve the features of FBG sensors. Furthermore, it was demonstrated that Ni coating and high-temperature treatments can recover a broken, seemingly unusable sensor. In this work, two main objectives were pursued: first, the determination of the best operative parameters to achieve the most compact, adherent, and homogeneous coating; second, the correlation between the obtained morphology and structure and the FBG spectrum modification, once Ni was deposited on the FBG sensor. The Ni coating was deposited from aqueous solutions. By performing heat treatments of the Ni-coated FBG sensor, it was investigated how the wavelength (WL) varied as a function of temperature and how that variation was caused by the structural or dimensional change of the Ni coating.

Metallurgical aspects of Ni-coating and high temperature treatments for FBG Spectrum regeneration / Lupi, Carla; Vendittozzi, Cristian; Ciro, Erwin; Felli, Ferdinando; Pilone, Daniela. - In: MATERIALS. - ISSN 1996-1944. - 16:8(2023). [10.3390/ma16082943]

Metallurgical aspects of Ni-coating and high temperature treatments for FBG Spectrum regeneration

Carla Lupi;Cristian Vendittozzi;Ferdinando Felli;Daniela Pilone
2023

Abstract

The structural integrity of mechanical components is assessed by FBG sensors in many industrial fields. The FBG sensor has a relevant application at very high or low temperatures. To avoid the variability of the reflected spectrum and the mechanical properties degradation of the FBG sensor, metal coatings have been used to guarantee the grating’s integrity in extreme temperature environments. Particularly, at high temperatures, Ni could be a suitable selection as a coating to improve the features of FBG sensors. Furthermore, it was demonstrated that Ni coating and high-temperature treatments can recover a broken, seemingly unusable sensor. In this work, two main objectives were pursued: first, the determination of the best operative parameters to achieve the most compact, adherent, and homogeneous coating; second, the correlation between the obtained morphology and structure and the FBG spectrum modification, once Ni was deposited on the FBG sensor. The Ni coating was deposited from aqueous solutions. By performing heat treatments of the Ni-coated FBG sensor, it was investigated how the wavelength (WL) varied as a function of temperature and how that variation was caused by the structural or dimensional change of the Ni coating.
2023
coating characterization; FBG coating; FBG regeneration; high-temperature treatments; nickel electrodeposition
01 Pubblicazione su rivista::01a Articolo in rivista
Metallurgical aspects of Ni-coating and high temperature treatments for FBG Spectrum regeneration / Lupi, Carla; Vendittozzi, Cristian; Ciro, Erwin; Felli, Ferdinando; Pilone, Daniela. - In: MATERIALS. - ISSN 1996-1944. - 16:8(2023). [10.3390/ma16082943]
File allegati a questo prodotto
File Dimensione Formato  
Lupi_Metallurgical-aspects-Ni_2023.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 9.93 MB
Formato Adobe PDF
9.93 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1679975
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact