Vibration Monitoring of Small Lightweight Components Using Fiber Optic Sensors

    Volume 19, Issue 6 (November 1991)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 4


    Powers, BL
    Fort Worth, TX

    Chuang, SY
    Fort Worth, TX

    (Received 5 February 1991; accepted 8 May 1991)

    Abstract

    Measurements of vibration resonant responses of lightweight components are difficult if the sensor's mass is comparable to the mass of the specimen. Fiber optic sensors, which are lightweight, are particularly attractive for this special application. To demonstrate the capability of fiber optic sensors for this unique application, a polarimetric fiber optic vibration monitoring system was developed to measure the resonant response of a capacitor (0.34 g) mounted vertically on a printed circuit board during a laboratory vibration test. A pronounced resonance peak around 1200 Hz was detected; this is in agreement with the first vibrational mode of the capacitor (1260 Hz) predicted by a NASTRAN finite element analysis. This resonance was suppressed by encapsulating the capacitor leads in RTV silicon rubber adhesive.


    Paper ID: JTE12613J

    DOI: 10.1520/JTE12613J

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    Author
    Title Vibration Monitoring of Small Lightweight Components Using Fiber Optic Sensors
    Symposium , 0000-00-00
    Committee G02