Experimentally validated phase-field fracture modeling of epoxy resins

In recent years the phase-field fracture (PFF) model has attracted much attention on failure problems in fiber-reinforced composite materials and structures. However, the discussion on the determination of input parameters remains unsettled. This work aims to seek a general solution for determining the length scale parameter lc and critical fracture energy density gf, the primary parameters of the PFF model. We design benchmark experiments,...