Application of Master Curve Technology to Biaxial and Shallow Crack Fracture Data for A533B Steels

Résumé du livre

The Master Curve approach has recently been proposed by Wallin [1] to define the expected toughness of ferritic steels in the ductile-to-brittle transition. This method has been standardized in ASTM E1921-98 using deeply cracked fracture toughness specimens tested quasistatically in the lower transition regime. However, the commercial nuclear power industry will often use this method to infer structural performance where the critical crack of interest is shallow, rather than deep, and the loading is biaxial rather than uniaxial. Research has been funded by the U.S. Nuclear Regulatory Commission (NRC) and conducted at the Oak Ridge National Laboratory (ORNL), the U.S. Naval Academy (USNA), and the Naval Surface Warfare Center (NSWC) to address potential shortcomings of the present ASTM Standard Master Curve method for such applications.