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    Surface Acoustic Wave (SAW) Sensors for Hip Implant: A Numerical and Computational Feasibility Investigation Using Finite Element Methods

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    biosensors-13-00079.pdf (6.039Mb)
    Date
    2023
    Author
    Hafizh, Muhammad
    Soliman, Md M.
    Qiblawey, Yazan
    Chowdhury, Muhammad E. H.
    Islam, Mohammad T.
    Musharavati, Farayi
    Mahmud, Sakib
    Khandakar, Amith
    Nabil, Mohammad
    Nezhad, Erfan Z.
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    Abstract
    In this paper, a surface acoustic wave (SAW) sensor for hip implant geometry was proposed for the application of total hip replacement. A two-port SAW device was numerically investigated for implementation with an operating frequency of 872 MHz that can be used in more common radio frequency interrogator units. A finite element analysis of the device was developed for a lithium niobate (LiNBO3) substrate with a Rayleigh velocity of 3488 m/s on COMSOL Multiphysics. The Multiphysics loading and frequency results highlighted a good uniformity with numerical results. Afterwards, a hip implant geometry was developed. The SAW sensor was mounted at two locations on the implant corresponding to two regions along the shaft of the femur bone. Three discrete conditions were studied for the feasibility of the implant with upper- and lower-body loading. The loading simulations highlighted that the stresses experienced do not exceed the yield strengths. The voltage output results indicated that the SAW sensor can be implanted in the hip implant for hip implant-loosening detection applications. 2023 by the authors.
    DOI/handle
    http://dx.doi.org/10.3390/bios13010079
    http://hdl.handle.net/10576/41931
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