Abstract
The selection of fracture behaviors used in the structure integrity assessment has significant implications on the accuracy of the assessment. The effect range of the material constraint is an important factor which effects the fracture behaviors of structures and exists in the different kinds of welded joints with the center crack. However, for the material constraint induced by an interface crack, which also appears widely in the welded joints, it is not clear whether the effect range exists or not. The further study of the effect range of the material constraint for the welded joints with interface crack is meaningful. Thus, in this study, different basic models with interface crack were designed, the fracture behaviors of these basic models under different material constraints were calculated, and the effect range of the material constraint induced by interface crack were studied. This study about the interface crack and the previous study about the center crack provide an additional basis for an accurate structure integrity assessment.
Highlights
It is well-known that material constraints, which are induced by strength mismatch, are an important factor which effects the fracture behavior of specimens and structures
Many scholars have focused their studies on the characterization of material constraints, and more researchers are concerned with the effect of material constraints on the fracture behaviors of specimens and structures
This means that the crack is out of the effect range of the material constraint induced by the A508/52 Mb and 52 Mw/A508 interface
Summary
It is well-known that material constraints, which are induced by strength mismatch, are an important factor which effects the fracture behavior of specimens and structures. For the effect of the material constraints, the J-resistance curves [5,6,7,8,9,10], crack growth paths [11,12], fracture toughness [13,14,15], and stress and strain fields at crack tip [16,17,18,19,20] under different material constraints have been widely studied. Yang et al [12] investigated the effects of material constraint induced by welded mechanical heterogeneity on the interface crack propagation in dissimilar weld joints. Thingthing is when the crack locates the the effect range ofmaterial the material constraint, andfracture the fracture resistance thejoints weldno joints no effect range of the constraint, and the resistance curvescurves of the of weld longer longer are influenced by the material constraint.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
