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Measurement of the Viscoelastic Properties of the Chinchilla Tympanic Membrane

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Mechanics of Biological Systems & Micro-and Nanomechanics, Volume 4

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Abstract

Tympanic membrane (TM) transmits the sound pressure in the outer ear into mechanical vibration in the middle ear. Quantitate study on the middle ear sound transfer function requires accurate measurements of the TM mechanical properties. In this paper, a dynamic micro-fringe projection technique is developed to measure the viscoelastic properties of the chinchilla TM. An intact TM in the bulla is inflated with a time-varying air pressure. Micro-fringes are projected onto the TM surface during the inflation process and the surface image of the TM is captured with a digital video camera connected to a microscope. The pressure-volume displacement relationship is calculated with a phrase-shift algorithm. Finite element method with the implementation of a viscoelastic model is employed with the pressure history as input. A viscoelastic model is used to model material properties. By solving an inverse problem with the model, the viscoelastic properties of the TM are determined.

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Acknowledgement

We acknowledge the support of DoD W8lXWH-14-1-0228 and NSF CMMI1661246.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, USA

    Junfeng Liang & Hongbing Lu

  2. School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK, USA

    Rong Z. Gan

Authors
  1. Junfeng Liang
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  2. Rong Z. Gan
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  3. Hongbing Lu
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Corresponding author

Correspondence to Hongbing Lu .

Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, College of Engineering, University of Kentucky, Lexington, KY, USA

    Martha Grady

  2. Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, USA

    Majid Minary

  3. Air Force Research Lab, Wright-Patterson, OH, USA

    La Vern Starman

  4. Nanomechanics, Inc, Oak Ridge, TN, USA

    Jenny Hay

  5. University of Wisconsin-Madison, Madison, WI, USA

    Jacob Notbohm

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Liang, J., Gan, R.Z., Lu, H. (2019). Measurement of the Viscoelastic Properties of the Chinchilla Tympanic Membrane. In: Grady, M., Minary, M., Starman, L., Hay, J., Notbohm, J. (eds) Mechanics of Biological Systems & Micro-and Nanomechanics, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95062-4_7

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  • DOI: https://doi.org/10.1007/978-3-319-95062-4_7

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-95061-7

  • Online ISBN: 978-3-319-95062-4

  • eBook Packages: EngineeringEngineering (R0)

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