High performance rotational vibration isolator

Andrew Sunderland, David Blair, Li Ju, Howard Golden, F. Torres, X. Chen, R. Lockwood, P. Wolfgram

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    We present a new rotational vibration isolator with an extremely low resonant frequency of 0.055 ± 0.002 Hz. The isolator consists of two concentric spheres separated by a layer of water and joined by very soft silicone springs. The isolator reduces rotation noise at all frequencies above its resonance which is very important for airborne mineral detection. We show that more than 40 dB of isolation is achieved in a helicopter survey for rotations at frequencies between 2 Hz and 20 Hz. Issues affecting performance such as translation to rotation coupling and temperature are discussed. The isolator contains almost no metal, making it particularly suitable for electromagnetic sensors. © 2013 AIP Publishing LLC.
    Original languageEnglish
    Pages (from-to)105111-1 - 105111-6
    JournalReview of Scientific Instruments
    Volume84
    Issue number10
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    vibration isolators
    isolators
    concentric spheres
    Springs (water)
    helicopters
    silicones
    Helicopters
    Silicones
    Vibrations (mechanical)
    resonant frequencies
    Natural frequencies
    isolation
    Minerals
    minerals
    electromagnetism
    low frequencies
    sensors
    Sensors
    Metals
    metals

    Cite this

    Sunderland, Andrew ; Blair, David ; Ju, Li ; Golden, Howard ; Torres, F. ; Chen, X. ; Lockwood, R. ; Wolfgram, P. / High performance rotational vibration isolator. In: Review of Scientific Instruments. 2013 ; Vol. 84, No. 10. pp. 105111-1 - 105111-6.
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    author = "Andrew Sunderland and David Blair and Li Ju and Howard Golden and F. Torres and X. Chen and R. Lockwood and P. Wolfgram",
    year = "2013",
    doi = "10.1063/1.4825342",
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    High performance rotational vibration isolator. / Sunderland, Andrew; Blair, David; Ju, Li; Golden, Howard; Torres, F.; Chen, X.; Lockwood, R.; Wolfgram, P.

    In: Review of Scientific Instruments, Vol. 84, No. 10, 2013, p. 105111-1 - 105111-6.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - High performance rotational vibration isolator

    AU - Sunderland, Andrew

    AU - Blair, David

    AU - Ju, Li

    AU - Golden, Howard

    AU - Torres, F.

    AU - Chen, X.

    AU - Lockwood, R.

    AU - Wolfgram, P.

    PY - 2013

    Y1 - 2013

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    AB - We present a new rotational vibration isolator with an extremely low resonant frequency of 0.055 ± 0.002 Hz. The isolator consists of two concentric spheres separated by a layer of water and joined by very soft silicone springs. The isolator reduces rotation noise at all frequencies above its resonance which is very important for airborne mineral detection. We show that more than 40 dB of isolation is achieved in a helicopter survey for rotations at frequencies between 2 Hz and 20 Hz. Issues affecting performance such as translation to rotation coupling and temperature are discussed. The isolator contains almost no metal, making it particularly suitable for electromagnetic sensors. © 2013 AIP Publishing LLC.

    U2 - 10.1063/1.4825342

    DO - 10.1063/1.4825342

    M3 - Article

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    JF - Review of Scientific Instruments

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