Report on the Round Robin Program Conducted to Evaluate the Proposed ASTM Standard Test Method for Determining the Plane Strain Crack Arrest Fracture Toughness, K(Ia), of Ferritic Materials.

摘要

The experimental results from a Round-Robin Program that was conducted during 1983-1985 to evaluate a proposed ASTM Test Method for Crack Arrest Fracture Toughness of Ferritic Materials are summarized. Of a total of twenty-seven participants from the United States, Canada, Europe and Japan, twenty-one completed their testing and forwarded results for inclusion and discussion in the report. Each organization tested three specimens of A514 bridge steel, three specimens of A588 bridge steel, and six specimens of A533 grade B class 1 steel. Analyses of the data show that the procedure can provide respectable results and that good agreement occurs between Ka values obtained using the proposed test method and those obtained from large-scale tests.