シャルピー衝撃試験片と実大破壊部材の破面相関

概要

論文の詳細を見る
Charpy impact test has been widely used for inspecting fracture toughness of steels in the world since the 1901 invention by French professor Dr. Georges Charpy. However, there has been a doubt and criticism, especially from fracture mechanics, that Charpy properties such as absorbed energy and percent brittle fracture deduced from the impact test may not be correlated with the fracture performance of actual steel members, because of crucial differences between them in terms of loading rate, specimen size, notch configuration, and stress-strain conditions. However, this paper shows that the surfaces as well as processes of the fractures are remarkably correlated between them, which suggests that Charpy test results can be rationally used as good indices for fracture resistance of structural steel members.
1998-06-30