The biomechanical characterization of tissue offers insight into items such as progression of disease and design parameters for implants1,2. To biomechanically evaluate the properties of blood vessels, biaxial testing is frequently performed because biological samples often exhibit anisotropy, and are most frequently under tension from the applied pressures and stretches3,4. Deciding whether to splay a tubular sample open to test in planar form versus performing pressure-inflation testing is a decision often determined by what testing equipment is available. The purpose of this abstract is to compare pressure-inflation behavior, stress distributions, and fiber architecture in planar versus tubular biaxial testing of the same arteries.

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