“…The power-law model, which is based on the power-law scaling of the viscosity near the gel point, ,,,− ,− predicts the gel conversion and the scaling behavior of the material. The extent of reaction at the gel point, α gel , is of particular interest for material extrusion additive manufacturing of thermoset composites ,− and filament winding , because it indicates the transition to a viscoelastic solid state where the material becomes exponentially more resistant to structural collapse. Well-established methods exist to determine the α gel of thermosets, but these methods are difficult to apply to composite resins that exhibit yield stress.…”