.... This work, performed within the FRACTESUS project, presents toughness measurements and detailed fractography on both a homogeneously brittle base metal and a relatively ductile, inhomogeneous weld to assess the transferability of fracture data. The fractography shows that brittle fracture initiates within...

... , “ Classical and Dislocation Theories of Brittle Fracture ,” Proceedings of the International Conference on Atomic Mechanics of Fracture , pp. 147 – 160 . Knott , J. F. , 1966 , “ Some Effects of Hydrostatic Tension on the Fracture Behavior of Mild Steel ,” J. Iron Steel Inst., London 0021-1567...

... of the pipeline. This paper addresses the stress and strain fields for a crack in a wide plate component under biaxial loading, which simulates a large-diameter pipe subjected to inner pressure coupled with axial loading. Attention is focused on the initiation of brittle fracture (stress controlled type) as well...

..., brittle fracture experiments were performed on carbon steel plates with two nonaligned flaws. From these calculations and experiments, authors studied the effect of stress intensity factor interaction on fracture behavior and proposed a new alignment rule for linear elastic fracture mechanics evaluation...

... on both the stress and strain state, and can be effectively predicted using the continuum damage models incorporating with the stress state effect. 30 01 2008 02 09 2008 20 04 2009 brittle fracture cracks ductile fracture ductile-brittle transition finite element analysis...

... toughness test specimens is proposed on the basis of “Weibull stress criterion.” The predicted intrinsic fracture toughness was found to be lower than the test results both in standard Charpy specimen and in three-point bend specimen with fatigue precrack. The assessment of brittle fracture performance...

...Masahito Mochizuki; Masao Toyoda Welding generates thermal distortion and residual stress, and it is well known that they affect the performance of welded structures by contributing to brittle fracture, fatigue, buckling deformation, and stress-corrosion cracking. Welding distortions and residual...

.... 12 09 2005 08 06 2006 fracture toughness welds pressure vessels standards steel brittle fracture master curve code cases N-629 and N-631 charpy-V shift K IC The ASME K IC (fracture toughness) reference curve was originally drawn as a free hand lower bound...

... methods ductile-brittle transition brittle fracture ductile fracture probability pipelines natural gas technology stress corrosion cracking In natural gas pipelines, there are many events that could lead to the initiation of an axial through-wall defect. For instance, stress corrosion...

... shifts in OUST are thus largely attributable to movements in the cleavage curve due to constraint. crack-edge stress field analysis fission reactor materials fission reactor safety ductile-brittle transition fractals brittle fracture pressure vessels micromechanics 2005 American...

... of PVC of about (8 percent). 4) Mode of failure changes from ductile (stable crack growth) to brittle fracture (unstable crack growth) according to; crosshead speed, thickness, orientation, and specimen configuration. 5) The crosshead speed has been proved to affect the mode of failure and mode...

... pressure caused by differential thermal expansion. Critical crack sizes for brittle fracture are generally very small, albeit larger for Si 3 N 4 than SiC due to lower liner stresses and higher fracture toughness for Si 3 N 4 . Contributed by the Pressure Vessels and Piping Division for publication...

... that 304 SS experiences a large environmental effect, and the detailed analysis below shows that this trend was supported by all tests. fatigue cracks fatigue testing stainless steel notch strength environmental degradation thermal stress cracking brittle fracture brittleness hydrogen...

... illustrates the effect of apparent fracture toughness as a function of fracture toughness test specimen thickness. The implicit brittle fracture resistance curves shown in Figs. 1 and 2 can be shown to be essentially equivalent over the wall thickness range from 2 1/2 in. (64 mm) to 5 in. (127 mm...