Twin volume fraction
WebJul 4, 2024 · The distribution of fetal fraction in twins is centered at higher values with an average of 12.1% compared to 9.6% in singleton pregnancies (singleton pregnancies: 9.64 ± 3.52; twin pregnancies ... WebMay 24, 2024 · From Figs. 2a–c, which show the simulated and experimental results on twin evolution after 10%, 20%, and 30% elongations, respectively, one can observe that twin volume fraction (TVF) varies in ...
Twin volume fraction
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WebApr 6, 2016 · Conversely, if the pseudo-TB moves into the twin by the reverse gliding of the twinning dislocations, it decreases the twin volume fraction.33 Very recently, a new twin nucleation, propagation, and growth (TNPG) model for hexagonal materials has been developed.38 This TNPG model explicitly takes into account the stress relaxation … WebJan 24, 2024 · According to the equivalent strains corresponding to positions 1, 2, and 4, as listed in table 1, it was concluded that the twin volume fraction decreased with increasing strain scale. It is known that the twin content decreased with increasing the strain scale during the detwinning process [41, 42].
WebThe survey showed that, for subsea application, both the twin-screw pump (TSP) and the helicoaxial pump (HAP) can handle high suction gas volume fraction (GVF) with a fluid recycling system, or flow mixer. Thus, GVF is not a discriminating factor. The positive-displacement principle allows TSPs to work with very WebSep 5, 2014 · The volume fraction of mechanical twins was calculated by substituting the value of the parameter α, determined by curve fitting, into Eq. [ 11 ] as shown in Figure 8 (b). The parameter values used in present study are listed in Table I .
WebVolume fraction. In chemistry and fluid mechanics, the volume fraction φi is defined as the volume of a constituent Vi divided by the volume of all constituents of the mixture V prior to mixing: Being dimensionless, its unit is 1; it is expressed as a number, e.g., 0.18. It is the same concept as volume percent (vol%) except that the latter is ... http://www.jcepm.com/article_122042.html
WebJan 23, 2024 · We naturally used a volume fraction to determine twinning nucleation and used characteristic twin spacing that is a function of twin height to determine twinning-induced microstructure evolution. In the current work, we will focus on crystal plasticity fast-Fourier transform (CPFFT) to incorporate the explicit twinning to accommodate …
WebModeling of metals deforming by twinning requires reorienting the matrix into twin orientation. In twinning models like the Predominant Twin Reorientation scheme (PTR), a threshold volume fraction is defined with an empiric equation to reorient the parent grain into the dominant twin variant. This equation contains two parameters which are first … cracker barrel franklin ncWebJan 23, 2003 · In protein crystallography the only possible twin laws are rotation axes. The fraction of the bricks in the alternative orientation corresponds to the twin scale factor, which in this example is 0.5. 3. ... The composite pattern with equal domain volumes (that is x = 0.5; Fig. 3 c) ... divers for fishingWebVolume fraction. In chemistry and fluid mechanics, the volume fraction φ i is defined as the volume of a constituent Vi divided by the volume of all constituents of the mixture V prior to mixing: [1] Being dimensionless, its unit is 1; it is expressed as a number, e.g., 0.18. It is the same concept as volume percent (vol%) except that the ... cracker barrel fredericksburg virginiaWebThe greater the volume of twins the lower the resultant spall strength. Shown in (b) are two time steps from the <001> simulation corresponding to the ~0.24 twin volume fraction in (a). cracker barrel free beignetWebApr 13, 2024 · The volume fraction of δ phase reaches equilibrium after 5 h, remaining at 5.98%, 6.52%, and 6.79% under different rolling reductions (10%, 30%, and 50%), respectively. The nucleation of δ phase mainly occurs on different sites (grain boundaries, new twin boundaries and old twin boundaries) under ... cracker barrel free beignets codeWebIt was also observed that as the number of fatigue cycles increases the twin volume fraction increases. After 100–200 fatigue cycles, the detwinning process was observed to be incomplete and a significant fraction of residual twins remained throughout an entire cycle. cracker barrel free beignet codeWebresults on twin evolution after 10%, 20%, and 30% elongations, respectively, one can observe that twin volume fraction (TVF) varies in both inter- and intra-granular manners. cracker barrel free beignets