Abstract: A large base of KIC , KId and JIC (R-curve) fracture toughness data has been used to develop reference toughness curves. The most successful results were obtained when a sigmoidal function ...

Abstract: Recently developed statistically-based fracture toughness reference curve procedures (Charpy V-notch and precracked Charpy methods) have been applied to unirradiated and irradiated plate and weld ...