Is the operation and maintenance test a toughness test?

Toughness test is a test to evaluate the fracture performance of cracked materials.

The concept of strength holds that when the external force reaches the yield strength, the material will undergo plastic deformation, and when the external force reaches the tensile strength R, the material will break. For cracked materials, it is brittle fracture below the yield strength.

Toughness test is a kind of performance index with energy as the basic parameter, which is closely related to the state and depth of cracks in materials and can provide quantitative performance index for cracked materials.