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  • use of fiber-optic sensors for long-term health monitoring of aerospace structures

    Paper number



    Ms. Shengnan Geng, China


    Mr. Feng Wang, China


    Ms. Minjie Feng, China



    Smart structures have been widely investigated in recent years for structural parameter measurements and health monitoring throughout the life cycle of spacecraft and launch vehicle systems. Among various emerging technologies, fiber-optic sensors are one of the leading candidates and have received considerable attention. In this paper, a sensing system was constructed consisting of multiplex fiber-optic sensors and a parallel processing interrogator. Fiber-optic sensors were designed with distinct package structures for respectively sensing strain or temperature. Tests were performed on a pressure vessel sample which was pressurized. Multiple strain and temperature fiber-optic sensors were fixed on the bottom and cylinder regions of the vessel, and parameters were monitored simultaneously and continuously. It was discovered that strains and temperatures kept changing associated with the pressure level. The pressurization tests successfully demonstrated the use of fiber-optic sensors for long-term health monitoring of aerospace structures. Moreover, the additional advantages such as damp proofing, high sampling rates and real-time inspection make the novel sensing technology especially appropriate for load monitoring and damage detection in future flight programs.
    Abstract document


    Manuscript document

    IAC-19,C2,9,4,x49806.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.