crack tip
Intergranular crack tip oxidation in a Ni-base superalloy
... Oxygen-rich protrusions (Figure 9) were observed to extend into the otherwise unoxidized matrix. It is suggested that these protrusions are caused by the preferential rapid oxygen diffusion along defects, presumably ...
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Comparison between Elastic-Perfectly-Plastic Interfacial Free-Edge and Crack Tip Singular Fields
... between crack initiation at the interfacial free-edge and growth of an interface crack the two fields are compared ...and crack-tip singular fields for the purely elastic and perfectly-plastic ...
7
THE EFFECT OF THE HOLD PERIOD OF A SINGLE TENSILE OVERLOAD TO THE NUMBER OF DELAY CYCLES IN FRONT OF THE CRACK TIP
... the crack tip shapes after being unloaded to the zero load from the overload point combined with the hold period, and the arrows point the crack tip for every magnitude of the ...the ...
9
Influence of Hardening on the Cyclic Plastic Zone Around Crack Tip in Pure Copper CT Specimens
... for crack growth and can be a criterion for determining the damage around the fatigue crack ...the crack tip in different conditions were ...the crack tip was constant in the ...
11
Simulation of Hydrogen Embrittlement at Crack Tip in Nickel Single Crystal by Embedded Atom Method
... Cross-sectional views of the middle (100) plane (x = 0) of the specimens precharged with 2000 and 4122 hydrogen atoms in the notched (100) planes are shown in Fig. 7 with the potentials represented by color according to ...
7
Two-parameter characterisation of crack tip stress field in elastic-perfectly plastic material.
... OF CRACK TIP STRESS FIELDS FOR DIFFERENT CONSTRAINTS To verify the proposed asymptotic 5-sector field detailed full-field FE analyses were ...different crack tip constraint ...
8
Research on local plastic strain at crack tip of dissimilar weld joints in nuclear power plant
... SCC crack growing, numerical simulations are carried out to analyze the strain and plastic strain rate ahead of growing crack ...on crack driving force is also ...stationary crack tip ...
7
Analytical evaluation of crack tip constraint for rigid plastic material using work principles.
... of crack tip constraint. Thus, an accurate evaluation of crack tip stresses is a pre-requisite for detailed fracture ...of crack tip constraint in homogeneous deeply cracked ...
8
The Early Stage of Dislocation Process around a Crack Tip Observed by HVEM Tomography in Silicon Single Crystals
... the crack (labelled as ) are on the ð11 11Þ planes while those adjacent to the crack tip (labelled as ) are cross- slipping from the ð11 11Þ planes to ð111 1Þ planes, the dislocation configuration of ...
6
Energy dissipation during delamination in composite materials – an experimental assessment of the cohesive law and the stress-strain field ahead of a crack tip
... the crack tip, the experimental traction- separation relation at the interface is found to be trapezoidal which is again different from the con- ventional bilinear cohesive ...
10
Fracture mechanics analysis for pressurized thermal shock of reactor pressure vessel based on the refined mesh division of crack tip
... the crack in the specific position of the reactor pressure vessel, the crack model is established by the finite element ...the crack tip, the fine meshing is the prerequisite for obtaining ...
9
Finite Element Validation of the Method Used to Estimate the Creep Crack Tip Charactering Parameters for Combined Primary and Secondary Stresses
... crack tip. However, the C(t) value obtained on the first contour near the crack tip is generally not reliable because of the inaccuracy of the FE stress, strain and displacement fields in the ...
8
Effect of circular holes on the ratchet limit and crack tip plastic strain range in a centre cracked plate
... the crack tip on the ratchet limit and crack tip plastic strain range is ...and crack tip plastic strain range is solved by employing the new Linear Matching Method ...the ...
34
Electric Current Induced Stresses Around the Crack Tip in Conductors
... the crack propagation with the proper timing of current ...the crack and thereby enhance the stress intensity factor at the crack ...the crack to ...the crack behavior seems only to ...
126
Crack-tip constraint effect of transient creep under displacement control
... Under displacement control, the creep stress fields should approach zero with time. Also, the value of Q- stress associated with the crack-tip constraint effect should approach zero. The relationship of Eq. ...
9
Study on Mixed Mode Crack-tip Plastic Zones in CTS Specimen
... on crack-tip plastic zones are of fundamental importance in describing the process of failure and in formulating various fracture ...the crack initiation angle depends on the loading angle ...of ...
6
METALS FRACTURE MICRO MECHANISM AND PLASTIC ZONES FORMATION AT THE CRACK TIP
... the crack tip under simple loading conditions in PD and PS are distinguished by both form and size that effect on both fracture mechanism and crack propagation ...the crack tip can be ...
6
Crack Tip Stress Analysis at a Bi Material Interface by Photoelastic, Isopachic and FEA
... transverse crack propa- gating through the mesophase of composites has become a subject of great ...of crack propaga- tion in a duplex plate was studied by Williams et ...the crack propagation ...
6
Variability of fracture toughness by the crack tip position in an annual ring of coniferous wood
... The effects of the location of the crack tip in an annual ring and the direction of crack propagation on the fracture toughness of the TR crack propagation system of coniferou[r] ...
9
Stress corrosion cracking and crack tip characterization of Alloy X-750 in light water reactor environments
... The APT reconstructions of the crack tips and crack wall identified several key features contributing to the SCC process: 1) Preferential oxygen transport occurs in [r] ...
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