Dynamic fracture toughness test and master curve method analysis of IAEA JRQ material

摘要

IAEA conducted a round-robin fracture test program to test and verify the Master Curve method. One of the materials selected for the round-robin is a A-533B1 plate designated as reference material JRQ. Unnotched Charpy-size specimens were fabricated and distributed to a number of testing laboratories. The three US Owners Groups received specimens for both Charpy impact and three-point bending tests to establish fracture toughness Master curves. The B&W Owners Group elected to perform a dynamic fracture toughness test under a high loading Rate using the JRQ specimens.