Determination of the critical values of toughness on crack of steels and welded joints

Abstract

The paper presents the results of tests on various steel grades and their welded joints as well as the formulas used to determine the critical values for toughness on crack criteria. They concern both the linear-elastic and the elastic-plastic range fracture mechanics. In addition, experimental and calculated crack tip opening displacement (CTOD) was compared based on their correlation with the results of standard impact tests of steel and welded joints. The compatibility of toughness on crack using different patterns was also evaluated.

Keywords

• cracking
• welded joints
• cracking resistance
• CTOD