Measuring Young's modulus using a self-mixing laser diode

Ke Lin, Yanguang Yu, Jiangtao Xi, Yuanlong Fan, Huijun Li

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddCyfraniad i gynhadleddadolygiad gan gymheiriaid

    Crynodeb

    This paper presents a novel approach for determining the Young’s modulus by using a self-mixing laser diode (SMLD). An SMLD system consists of a laser diode (LD), a microlens and an external target. With a small portion of light backscatterd or reflected by the target re-entering the LD inside cavity, both the amplitude and frequency of the LD power are modulated. This modulated LD power is referred as a self-mixing signal (SMS) which is detected by the photodiode (PD) packaged in the rear of the LD. The external target is the tested sample which is in damping vibration excited by a singular elastic strike with an impulse tool. The vibration information from the tested sample is carried in the SMS. Advanced data processing in frequency-domain is applied on the SMS, from which the resonant frequency of the vibration can be retrieved, and hence Young’s modulus is calculated. The proposed method has been verified by simulations.
    Iaith wreiddiolSaesneg
    TeitlProceedings of SPIE - Reliability, Packaging, Testing, and Characterization of MOEMS/MEMS, Nanodevices, and Nanomaterials XIII
    Is-deitl1-6 February 2014
    GolygyddionHerbert R. Shea, Rajeshuni Ramesham
    Man cyhoeddiWashington, USA
    CyhoeddwrSPIE
    Cyfrol8975
    ISBN (Argraffiad)978-0819498885
    StatwsCyhoeddwyd - 2014
    DigwyddiadSPIE MOEMS-MEMS - San Francisco, Yr Unol Daleithiau
    Hyd: 7 Mar 2014 → …

    Cyfres gyhoeddiadau

    EnwProceedings of SPIE
    ISSN (Argraffiad)0277-786X

    Cynhadledd

    CynhadleddSPIE MOEMS-MEMS
    Gwlad/TiriogaethYr Unol Daleithiau
    DinasSan Francisco
    Cyfnod7/03/14 → …

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