Difficulties in The KIC Analysis of Materials With High Fracture Toughness
AbstractOne of The main purpose of fracture mechanics is materials selection compatible with the fracture toughness. The higher stress at crack tip and lower zone of fracture area provides less dimensions and crack length of specimens. According to ASTM E 399, evaluated KIC, measured plane strain fracture toughness (KIC) related to parallel direction of crack propagation which is lower than cross sectional area, occurrence of pre-crack, selection of COD gauge, type of cracks, and drawbacks during the measurements are clarified.