Tilted fiber Bragg grating (TFBG) sensors were demonstrated to simultaneously measure the material thermomechanical and refractometric state in which they are embedded. In this work, for the first time, TFBGs are investigated for three-parameter monitoring of space-qualified NuSil® CV16-2500 silicone operating during high-vacuum ultraviolet (UV) exposure. The first part of the work is focused on the ultraviolet effect on the TFBG spectrum when the sensor is 1) directly exposed to the radiation, 2) covered by a thin cover glass, and with a Kapton layer on top. Successively, the silicone is used as an adhesive in a sandwich structure in which the TFBGs are embedded and exposed under high vacuum to various UV/vacuum UV intensity radiations and durations. The sensors’ spectra were acquired and demodulated to detect the silicone strain–temperature–refractive index variations and correlate the silicone refractometric changes with the equivalent exposure solar hours. The second part of the paper is on silicone degradation state evaluation using the same sensor but during a direct exposure of the adhesive to the radiation. This allowed the UV effects on the silicone to be enhanced but needed a method to compensate for the damaging effect of UV radiation on the TFBG spectrum.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Multiparameter Single Sensor for Space Silicone Adhesive Monitoring Under High-Vacuum Ultraviolet Exposure


    Contributors:

    Published in:

    Publication date :

    2023-01-30


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Change in Optical and Evaporation Characteristics of Silicone Contaminant Film by Vacuum Ultraviolet Exposure

    Baba, S. / Yokozawa, H. / Miyazaki, E. et al. | British Library Conference Proceedings | 2013


    Effects of Space Environment Exposure on the Blocking Force of Silicone Adhesive

    Boeder, P. / Mikatarian, R. / Lorenz, M. J. et al. | British Library Conference Proceedings | 2006


    EFFECTS OF SPACE ENVIRONMENT EXPOSURE ON THE BLOCKING FORCE OF SILICONE ADHESIVE

    BOEDER, PAUL / MIKATARIAN, RON / LORENZ, MARY J. et al. | Springer Verlag | 2006


    Simulated space vacuum ultraviolet (VUV) exposure testing for polymer films

    Dever, Joyce / Pietromica, Anthony / Stueber, Thomas et al. | AIAA | 2001


    VACUUM ULTRAVIOLET RADIATION EFFECTS ON DC93-500 SILICONE FILM

    DEVER, JOYCE A. / BANKS, BRUCE A. / YAN, LI | Springer Verlag | 2006