Last edited by Kamuro
Sunday, July 26, 2020 | History

2 edition of Irradiation Deformation Due to Sipa Induced Dislocation Anisotropy. found in the catalog.

Irradiation Deformation Due to Sipa Induced Dislocation Anisotropy.

Atomic Energy of Canada Limited.

Irradiation Deformation Due to Sipa Induced Dislocation Anisotropy.

by Atomic Energy of Canada Limited.

  • 16 Want to read
  • 27 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesAtomic Energy of Canada Limited. AECL -- 6791
ContributionsWoo, C.
ID Numbers
Open LibraryOL21970156M

Seismic response of fractures and induced anisotropy in poroelastic media Due to the extremely fine meshes needed to properly represent these mesoscopic-scale fractures, numerical simulations are very Seismic response of fractures and induced anisotropy in poroelastic media – p. The hardening due to point defect clusters was calculated using a simple dislocation barrier model. Both cluster types can give rise to significant hardening; their relative importance is a function of irradiation temperature and displacement by: 8.

ered anisotropy, implying either complex deformation in a past collisional event or, more plausibly, a mix of active and fossil deformations. The parameters of a split shear wave can be esti- mated by a grid search over possible time delays and fast Cited by: Stress‐induced upper crustal anisotropy in southern California Zhaohui Yang,1,2 Anne Sheehan,1,2 and Peter Shearer3 other category is structural anisotropy due to rock or mineral fabric, such as preferential mineral alignment [Brocher and UPPER CRUSTAL ANISOTROPY IN SOUTHERN CALIFORNIA B 2of

different times. Thermal and pressure-induced stresses build up in the shell layer, which give rise to part shrinkage and to residual stresses after ejection [HAS 92]. For complex geometry parts, asymmetric cooling [STJ 82], shrinkage variations [DEN 95] and anisotropy of in-plane shrinkage lead to part deformation and Size: KB. - dislocation evolution, by thermo-mechanical or radiation-induced processes - void swelling - precipitation of additional phases, and solute segregation - stress corrosion cracking, and irradiation-assisted SCC • dependent on fundamental atomistic processes, and controls macroscopic observables such as strength, ductility, creep.


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Irradiation Deformation Due to Sipa Induced Dislocation Anisotropy by Atomic Energy of Canada Limited. Download PDF EPUB FB2

For simplicity, we neglect the possi- bility of the SIPA-induced anisotropy [13,21] in the distribution of the irradiation-generated dislo- cation loops. We assume that they are equally distri- buted among the three classes.

As for the glissile dis- locations generated by pre-irradiation deformation, two separate cases are by: 9. @article{osti_, title = {Irradiation creep due to SIPA under cascade damage conditions}, author = {Woo, C H and Garner, F A and Holt, R A}, abstractNote = {This paper derives the relationships between void swelling and irradiation creep due to Stress-Induced Preferred Absorption (SIPA) and SIPA-Induced Growth (SIG) under cascade damage conditions in an.

The SIPA creep rate of a dislocation structure with a preferred Burgers vector, as a function of stress direction 0p for different skewness/p.

C.H. Woo I The Anisotropie dislocation structure random dislocations, which is made up essentially of irradiation generated dislocation loops, this corres- ponds to a value of/p =from which a Cited by:   Radiation-induced creep due to point-defect diffusion anisotropy at dislocation cores.

“The contribution from dislocation climb to irradiation creep,” At. Énerg.,59, No. 5, Borodin, V.A., Ryazanov, A.I. Radiation-induced creep due to point-defect diffusion anisotropy at dislocation cores.

At Ene – Author: V. Borodin, A. Ryazanov. Here, using high pressure and temperature experiments, the authors find that seismic anisotropy observed at the D'' layer is caused by 50% deformation of the minerals post-perovskite and Cited by: 8. Irradiation Creep of Zr-Alloys. is important in controlling the rate of irradiation-induced deformation.

It is found that the anisotropy of the dislocation structure causes an anisotropy. endeThe use of X‐ray diffuse scattering to carry out detailed investigations of vacancy and interstitial loops in ion and neutron irradiated copper is.

@article{osti_, title = {Frank loop unfaulting mechanism in fcc metals during neutron irradiation}, author = {Gelles, D. S.}, abstractNote = {The unfaulting mechanism whereby sessile Frank dislocation loops evolve into a complex tangle of glissile dislocations during irradiation of face centered cubic metals is not well understood.

For the steady-state irradiation creep, the deformation may be expressed as the sum of irradiation creep and swelling and the following equation is a generalized formulation (Anderoglu et al. Seismic anisotropy of the D00 layer induced by () deformation of post-perovskite Xiang Wu1, Jung-Fu Lin2, Pamela Kaercher3, Zhu Mao4, Jin Liu2, Hans-Rudolf Wenk5 & Vitali B.

Prakapenka6 of –GPa that is still sufficient to induce deformation by dislocation slip. The much lower differential stress is likely to be.

Damage induced wave anisotropy in rocks Axial stress (MPa) 3 s) 02 4 6 8 10 0 02 4 6 02 4 6 8 10 a. Figure 1. Loading histories during the three analysed deformation cycles. (a) First cycle is under 60 MPa confining pressure.

(b) Second cycle is under 40 MPa confining pressure. (c) Third cycle is under 20 MPa. Radiation-induced creep and swelling is formulated in terms of the segregation of vacancies and interstitials to the microstructural sinks, such as voids, dislocations, and dislocation loops, in order to provide the physical basis for the effect of stress on swelling, radiation-induced creep, and the interrelationship between swelling and irradiation by: 9.

Material symmetry constitutive equations deformation-induced anisotropy Sommario Nel lavoro viene introdotto il concetto di simmetria per la descrizione Cited by: 2. Matsukawa S, Makino T, Mori S, Koyama D, Takayanagi S, Mizuno K et al.

Effect of anisotropy on stress-induced electrical potentials in bovine bone using ultrasound irradiation. Applied Physics Letters. Apr 3;(14). Cited by: 3. Plastic anisotropy and associated deformation mechanisms in nanotwinned metals Zesheng Youa, Xiaoyan Lib, Liangjin Guic,d, Qiuhong Lua, Ting Zhuc,⇑, Huajian Gaob,⇑, Lei Lua,⇑ aShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, ShenyangPeople’s Republic of China b School of.

Constitutive Modeling of Deformation-Induced Anisotropy in Superplastic Materials p Hyperbolic Sine Representation of a Constitutive Equation Cited by: 8. Author(s): Wu, Xiang; Lin, Jung-Fu; Kaercher, Pamela; Mao, Zhu; Liu, Jin; Wenk, Hans-Rudolf; Prakapenka, Vitali B | Abstract: Crystallographic preferred orientation (CPO) of post-perovskite (Mg,Fe)SiO3 (pPv) has been believed to be one potential source of the seismic anisotropic layer at the bottom of the lower mantle (D″ layer).

However, the natural CPO of pPv remains Cited by: 8. seismic waves. Seismic anisotropy is therefore a useful tool for investigating the dynamics of subduction zones, but it has so far proved di˚cult to observe the anisotropic properties of the subducted slab itself.

Here we analyse seismic anisotropy in the subducted Nazca slab beneath Peru and find that the. The bone fracture healing mechanism of the low-intensity pulsed ultrasound technique is not yet clearly understood.

In our previous study, the electrical potentials induced in bone were successfully measured by focusing on piezoelectricity in the MHz range. Bone is composed of collagen and hydroxyapatite and has strong anisotropy. The purpose of this study is to Cited by: 3.

Densification, anisotropic deformation, and plastic flow of SiO2 during MeV heavy ion irradiation E. Snoeks and A. Polman FOM Institute for Atomic and Molecular Physics, KruislaanSJ Amsterdam, The Netherlands C.

Volkert AT&T Bell Laboratories, Mountain Avenue, Murray Hill, New Jersey. Anisotropy associated with faults, mineral alignment, and sedimentation structures is generally categorized as structure‐induced anisotropy.

In some cases, due to different spatial sampling, a mixture of mechanisms on a single station can be observed (e.g., Cochran et al., ; Peng & Ben‐Zion, ).Cited by: Fracture-Induced Anisotropic Attenuation ation anisotropy due to the presence of fractures are sen-sitive to key properties of the reservoir, such as porosity, permeability, and fluid type.

A few frequency-dependent models have been devel-oped to .T/AT asymmetry. To examine plastic anisotropy, we use first-principles DFT calculations to determine the energetics and trajectories of b=1/2[] screw dislocations gliding between neighbouring equilibrium consider the 0 K Peierls stress limit where dislocations glide rigidly, allowing to simulate straight periodic dislocation by: