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We find that in the same finishing distance, with the increase of vibration frequency, the direction-changing numbers of abrasive become more.
It means the vibration frequency has affected the direction-changing numbers of abrasive.
From the Fig.13 we can discover that the vibration frequency gets higher, the locus density of abrasive grain becomes more.
This implies that new edges on the abrasive grains can participate in the cutting process.
And the locus density of abrasive grain becomes more as the increasing of vibration frequency.

The findings of the early experiments [3, 4] were that the grain sizes extended over several orders of magnitude and that there was no correlation between the final grain size, the time of nucleation and the growth rate of the individual grains.
Each region contains two grains.
The intensity of one secondary subgrain even exceeds that of the primary grain.
No (sub)grain rotations could be observed during growth.
Each new variable will, however, increase the amount of data by a factor equal to the number of scanning steps in this dimension.

The research objective is to forecast the development of reservoir units in undeveloped parts, determine the expected parameters of their class, the maximum total net reservoirs and the number of sandy formations, carry out their indexation and detailed paleogeographic reconstructions of the inspected area.
Lithologically, the YU11 formation is composed of gray from light gray to dark gray, finely medium-grained, weakly and medium-cemented sandstones of feldspar-quartz composition.
The goal of this paper is to forecast the development of reservoir units in undeveloped parts, to determine the expected parameters of their class, the maximum total net reservoirs and the number of sandy formations, and to carry out their indexation and detailed paleogeographic reconstructions of the inspected area.
According to the analysis of thin sections and screen analysis of core samples, the following rocks are distinguished: sandstones are fine-medium-grained, medium-fine-grained, mixed sandy-aleuritic rocks, and siltstones from low-lime to calcareous.
Byramjee, Grain-size image of clastic deposits, Sedimentology, 13(3-4) (1969) 233-252

While this method provides consistent results for some grain orientations, there are other grains where this method is unable to consistently determine the correct orientation.
The indexing within all grains is virtually perfect.
There are only a very few points within a few of the grains where the software has chosen a different solution to that chosen for the rest of the grain, and these points are concentrated along grain boundaries, where the quality of the EBSPs would have been lower.
While data cleaning procedures can still be used to provide a "clean" looking map, a higher level of cleaning is required and the high levels of mixed solutions in some of the grains leaves doubt as to whether these grains are "cleaned" to the correct orientation.
This and the much smaller number of grains sampled using EBSD compared with XRD are likely explanations for the small difference in peak position and less consistent intensity contouring towards the {010)<100] orientation in the EBSD result compared with the XRD result.

Neutron irradiation at low temperature up to 1 dpa induced a high number density of defect clusters, which resulted in irradiation-induced hardening.
Zr 0 200 400 600 800 0 10 20 30 40 50 60 Elongation, % Engineering stress, MPa unirr. 0.09 0.63 dpa 0.009 0.0009 0.0001 Zr-4 unirr. 0.001 0.1 0.80 dpa 0.01 0 200 400 600 800 0 10 20 30 40 50 60 Elongation, % Engineering stress, MPa 3-2 Irradiation-induced hardening by defect clusters Neutron irradiation at low temperature produced a high number density (~1023 m-3) of small defect clusters (~3 nm) in the materials.
The number of slip systems of HCP is just 3, however, it is possible to have pyramidal glide (on {1011}, {1012}, {1121}, and {1122}) and/or prismatic glide (on {1010}) in some cases.
Zr Zr-4 3-4 Effect of orientation on dislocation channeling On the approximation that all the grains in the material deformed uniformly and grain rotation during deformation is negligible, the resolved shear stress for each dislocation channel observed was estimated using the value of the UTS.
The dependence of the dislocation channel width on the angle between the tensile axis and the slip plane normal in each grain where channeling occurred in Zr and Zr-4 indicated the same tendency as the resolved shear stress for the channel width to be wider when the angle is around 45° as seen in BCC and FCC materials [3,7,8].

During a routine inspection of a 500kV transmission line, the inspectors found a large number of strain clamps cracked.
The grains are equiaxed and their size is relatively large.
The microstructure of drainage plates is large equiaxed grains, which indicates that they are produced by casting.
Under the influence of line tension and wind vibration, the cracks exist inside the drainage plates tend to develop along the grain boundary and link adjacent shrinkage cavities.
Conclusions Due to the rough production process, there are a large number of shrinkage cavities and cracks inside the drainage plates.

Moreover, the flame retardant components were characterized by grain size distribution.
The grain size distribution was determined using the AS 200 laboratory screen from Retsch GmbH.
Results Grain size distribution.
The grain size distributions shown in Figure 1 correspond to the mass of the flame retardant system component remaining on sieves of a given mesh size.
Distribution of the grain size of S and H being components of the developed fire retardant system The synthetic component (H) of the flame retardant system showed a greater share of large grains, and the content of particles above 71 μm was as much as 90%.

Here, positive values are related to protruding grains, whereas negative vales indicate removed grains.
More in-depth studies, as e.g. the analysis of the number of cycles required to fatigue the bonding of a single grain, can identify this threshold value.
At this value the corresponding point on the grinding wheel is reduced by the diameter of one grain, imitating the loss of a grain.
Marked by numbers, the first and fourth harmonics are clearly visible in both the simulation and experiment.
Surface waves on the grinding wheel with various wave numbers might be the reason for the additional harmonics.

Mechanism of new stealthy continues to be broken through and numbers of successful developments of new types of stealthy materials are put into use.
New stealthy mechanisms were achieved breakthrough and numbers of new stealthy materials were successfully developed and put into use.
Because of small size the number of atoms on the grain boundary are more than inside grains, which produce high concentrations of grain boundaries, making the performances of nano-materials be different from those of generally coarse-grained materials.

To provide a comprehensive perspective, a number of PNCs were produced by the incorporation of nanoclays in different polymer matrices.
(4) vi and vj are the velocity vectors of the ith and jth beads, respectively. ξij is a Gaussian random number with zero mean and unit variance.
Afterwards, this setup was rescaled to account for the magnification and further coarse-graining necessary for the microscale simulations of the PNCs.
The application of scaling rules for different coarse-graining degrees makes it possible to use DPD at different length/time scales.
Ziock, Coarse graining and scaling in dissipative particle dynamics, J.