Fiber-optic simultaneous distributed monitoring of strain and temperature for an aircraft wing during flight

Daichi Wada*, Hirotaka Igawa, Masato Tamayama, Tokio Kasai, Hitoshi Arizono, Hideaki Murayama, Natsumi Isoda, Masafumi Katsuta

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    We applied a fiber optic distributed simultaneous strain and temperature measurement technique to the structural monitoring of the main wing of a middle-sized passenger jet aircraft during flight. We used 40 10 cm long fiber Bragg gratings (FBGs), inscribed in a highly birefringent polarization-maintaining fiber. The FBGs were interrogated by optical frequency domain reflectometry, which could measure Bragg wavelength distributions at a sampling rate of 151 Hz. The simultaneous measurement technique could detect structural behaviors of the wing during flight under temperature-changing conditions. In addition, we discuss the effect of the polarization mode-coupling and the apparent position shift of the FBGs over time, which occurred during flight.

    Original languageEnglish
    Pages (from-to)10458-10465
    Number of pages8
    JournalApplied Optics
    Volume57
    Issue number36
    DOIs
    Publication statusPublished - 2018 Dec 20

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Electrical and Electronic Engineering

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