An acoustoelastic formula connects the difference of two perpendicular shear-wave speeds to the local stress difference, enabling stress imaging in hydrogels and muscle without constitutive parameters.
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Non-invasive measurement of local stress inside soft materials with programmed shear waves
An acoustoelastic formula connects the difference of two perpendicular shear-wave speeds to the local stress difference, enabling stress imaging in hydrogels and muscle without constitutive parameters.