Deep indentation force-depth curves have a Hertzian and a parabolic regime, and the parabolic coefficient beta maps empirically to the Ogden strain-stiffening coefficient alpha, allowing in-situ hyperelastic characterization.
Traditional methods typically rely on uniaxial tensile tests, which require the cumbersome preparation of dumbbell-shaped samples for clamping in a uniaxial testing machine
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Hyperelastic characterization via deep indentation
Deep indentation force-depth curves have a Hertzian and a parabolic regime, and the parabolic coefficient beta maps empirically to the Ogden strain-stiffening coefficient alpha, allowing in-situ hyperelastic characterization.