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A method for measuring strains in soft tissue.

A H Hoffman, P Grigg

    Journal of Biomechanics
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    A novel finite element method accurately measures soft tissue strain. This technique uses surface markers and a high-sensitivity camera, enabling precise calculations for biomechanical analysis.

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    Area of Science:

    • Biomechanics
    • Biomedical Engineering
    • Computational Mechanics

    Background:

    • Accurate strain measurement is crucial for understanding soft tissue behavior.
    • Existing methods may lack precision or applicability to complex deformations.

    Purpose of the Study:

    • To develop and validate a finite element-based method for quantifying in-plane strains in soft biological tissues.

    Main Methods:

    • Utilized an array of surface markers as nodes for four-node isoparametric elements.
    • Employed a high-sensitivity television camera to record marker centroid displacements.
    • Applied finite element method (FEM) mathematics to compute the plane strain tensor.

    Main Results:

    • Successfully implemented a non-rectangular element approach for versatile application.

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  • Demonstrated the capability to calculate strain tensor components within elements.
  • Method is suitable for elements approximately 2 mm in size.

    • Conclusions:

    • The developed finite element method offers a precise and adaptable tool for soft tissue strain analysis.
    • This technique has potential applications in various fields, including medical device design and surgical simulation.