Explanation
Also known as fracture toughness, it refers to the ability of a cracked component to resist the unstable propagation of cracks, which is expressed by the critical value of the stress intensity factor at the crack tip. There are plane strain fracture toughness (KIC) and plane stress fracture toughness (Kr). Generally, the fracture toughness is plane strain fracture toughness.
Classification
Fundamental of Material Science -> Performance basis of materials