Large deformation rate-dependent stress–strain behavior of polyurea and polyurethanes

By Jin-Hak Yi, Mary C. Boyce, Geoffrey F. Lee, E. Balizer. 2006

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Deformation of polyurea-coated steel plates under localised blast loading (2013, methodology): “Yi et al. (2006) looked at the rate-dependent compressive stress-strain behaviour of polyurea, and reported a transition from a rubbery-like behaviour at low strain rates (0.001 – 1 s-1) to a glassy-like behaviour at high strain rates (∼103 s-1).”
High Strain Rate Mechanics of Polymers: A Review (2016, background): “the viscoelastic nature of the response, or, if the glass transition takes effect, the material may exhibit ‘leathery’ [155] then glassy behavior.”
Using split Hopkinson pressure bars to perform large strain compression tests on polyurea at low, intermediate and high strain rates (2009, unknown): “In combination with an advanced wave deconvolution method, the modified SHPB system provides an unlimited measurement time and thus can be used to perform experiments at low, intermediate and high strain rates.”