Crack tip
Crack Tip Equation of Motion in Dynamic Gradient Damage Models
... the crack tip equation of motion in dynamic gradient damage ...the crack tip predicted by the dynamic gradient damage model is then governed by a Griffith-like scalar equation involving these ...
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Neutron diffraction measurements of residual stresses around a crack tip developed under variable-amplitude fatigue loadings
... the crack tip imme- diately after applying underload–overload ...the crack tip was decreased and a sharp drop of residual stress at the crack tip was also observed right after ...
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About the effect of plastic dissipation in heat at the crack tip on the stress intensity factor under cyclic loading
... the crack) along a radial axis for two different ...the crack tip (figure ...of crack front), and the stresses are proportional to q (see Equations 7 and 8) ...
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Heat and strain measurements at the crack tip of filled rubber under cyclic loadings using full-field techniques
... crack tip. The zones above and below the crack lips are in ...the crack tip, the strain state is close to PS in plane (X, Z) (see Figure ...the crack tip ...the ...
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Thermal effect of plastic dissipation at the crack tip on the stress intensity factor under cyclic loading
... fatigue crack velocity is small, especially when the stress intensity range DK is close to the threshold value DK th ...moving crack, DK and also the heat source q can be supposed ...fatigue crack ...
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Ab initio calculation of H interactions with defects in fcc metals : crack tip dislocations and vacancies
... a crack tip [ 19 ]. The next point is the choice of the crack orientation with respect to the available glide ...the crack front and where three dimensional loops develop from the crack ...
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About the effect of plastic dissipation in heat at the crack tip on the stress intensity factor under cyclic loading
... the crack tip, there is plastic dissipation in heat at the crack tip under cyclic ...through crack under Mode I cyclic loading, and (ii) a finite specimen with a central through ...the ...
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Effect of thermal cycles on the deformation state at the crack tip of crystallizable natural rubber
... stretched crack tip In order to generate crystallites at the crack tips, the sample is first stretched at a nominal stretch ratio of ...the crack tip exceeds ...stretched crack ...
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Characterization of a cracked specimen with full-field measurements: direct determination of the crack tip and energy release rate calculation
... the crack tip is to consider the local rotation ...the crack tip directly on the ...the crack tip location, but both approaches are ...the crack went through the ...the ...
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Numerical simulations of crack tip stress-strain fields in single crystal nickel-base superalloys at high temperature under creep-fatigue loadings
... on crack tip stress and strain fields in single crystal Nickel-base superalloys reveals the importance of dwell times during ...the crack tip. Moreover, the wake plastic zone influences these ...
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Thermomechanical analysis of the crack tip zone in stretched crystallizable natural rubber by using infrared thermography and digital image correlation
... Fig. 7 -b gives the variation in the maximum value of the heat source near the crack tip and the corresponding maximum stretch ratio. The following comments can be made from this figure: during the loading ...
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Cleaved surface of i-AlPdMn quasicrystals: Influence of the local temperature elevation at the crack tip on the fracture surface roughness
... the crack speed in the range v crack ⬎v sound / 10 where v sound = 4000 m s −1 is the sound velocity of the ...the crack tip is calculated to be of the order of 540 K while the zone size of ...
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Effect of sub-surface hydrogen on intrinsic crack tip plasticity in aluminium
... blunted crack in a {1 1 0} plane, propagating in the 〈1 1 1〉 direction (crack front along 〈1 1 ...the crack tip to an external load largely depends on the surface site where the H atoms are ...
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Effect of sub-surface hydrogen on intrinsic crack tip plasticity in aluminium
... where δ tip is the displacement discontinuity at the crack tip (x 1 = 0). When the mechanical load on the crack tip reaches k IIe , Φ(δ tip ) is γ us . The step from Eq. 3 to Eq. ...
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Diffusion processes as possible mechanisms for Cr depletion at SCC crack tip
... established by Le Hong et al. [ 25 ]. For a CGR of 1 mm/yr, a strain rate of 10 −7 s −1 is found. The Wagner’s model is then applied using the minimum and maximum effective diffusion coefficients measured at 350 °C (Fig. ...
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Influence of phase transformation anisotropy on transformation surface around a crack tip
... CONCLUSIONS The notion of alteration of the axes of the stress space to describe the influence of texture-induced anisotropy allows extending fracture analysis in SMAs. Prediction of the phase transformation onset zones ...
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Improved crack tip enrichment functions and integration for crack modeling using the extended finite element method
... the crack tip enrichment functions was of course noted in numerous papers (B´echet et ...the crack tip, which do not contain the crack ...the crack tip does not coincide ...
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Chromium depletion in relation with oxidized grain boundaries at the SCC crack tip
... CRACK PROPAGATION MODEL [1] SCC propagation mechanism proposed by authors [1] 1. Chromium oxidation at the crack tip : weakens the grain boundary (GB) 2. Chromium depleted area of 20 nm in the grain ...
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Characterization of heat sources in the crack tip zone in stretched NR and SBR rubbers
... a crack tip zone of two types of carbon black filled rubbers: a Styrene Butadiene Rubber (SBR) and a Natural Rubber ...the crack tip zone and consequently decreases the maxi- mum stretch ...
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Atomistic Study of Crack-Tip Cleavage to Dislocation Emission Transition in Silicon Single Crystals
... in crack-tip mechanisms from cleavage fracture to dislo- cation emission in silicon under changes in the tempera- ...to crack- tip mechanisms that is currently missing from theoretical ...
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