Tambet Masik Feb 9, 2018 Grabcad tutorial PolyJet Multi-Materials For Impact Resistance Impact resistance, or toughness, is defined by the relative susceptibility of plastics to fracture under stresses applied at high speeds. In materials science and metallurgy, impact resistance is a material’s resistance to fracture when stressed. It is defined as the amount of energy per volume t... Log in or sign up to post a reply