... demonstrated as corresponding to brittle fracture. However, the brittle fracture surface ratio increases with decreasing temperature without attaining the critical line for ductile fracture, which results in increasing divergence from the critical line for ductile fracture. On the other hand, the results...

... 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...

... transition fractals brittle fracture pressure vessels micromechanics Reactor pressure vessels (RPVs) are designed to operate at temperatures where the material behaves in a ductile manner. This is a conservative requirement intended to ensure that any crack, which may be present in the vessel...

... speeds greater than 300 mm/min. The average K IC value is found to be 5.27 MPa⋅m 1/2 . Table 5 shows the final results for the three point bend specimens, the fracture toughness values for L-C, C-L orientations, specimen thickness and critical crosshead speed at which brittle fracture...

... 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...

... cracking brittle fracture brittleness hydrogen embrittlement Fatigue crack propagation data for Type 304 stainless steel (304 SS) were obtained in air and an elevated temperature aqueous environment. The data were developed from instrumented fatigue tests on double-edged notched (DEN) fatigue...

... represent explicit approaches for the demonstration of resistance to brittle fracture. In recent years, these very conservative requirements have been incorporated into the ASME Code Section III, Division 3 6 . The only difference between the guidance in reference 5 and the requirements in Table WB...