We consider the behavior of the Doi-Marrucci-Greco (DMG) model for nematic liquid crystalline polymers in planar shear flow. We found the DMG model to exhibit dynamics in both qualitative and quantitative agreement with experimental observations reported by Larson and Mead [Liquid Crystals, 15 (1993), pp. 151–169] for the Ericksen number and Deborah number cascades. For increasing shear rates w...

Nanocrystalline metals with average grain sizes of only a few nanometers have recently been observed to fail through the formation of shear bands. Here, we investigate this phenomenon in nanocrystalline Ni which has had its grain structure stabilized by doping with W, with a specific focus on understanding how strain localization drives evolution of the nanoscale grain structure. Shear banding ...

We describe the structure, microstructures, texture and paleopiezometry of quartz-rich phyllites and marbles along N-trending Moutsounas shear zone at the eastern margin of the Naxos metamorphic core complex (MCC). Fabrics consistently indicate a top-to-the-NNE non-coaxial shear and formed during the main stage of updoming and exhumation between ca. 14 and 11 Ma of the Naxos MCC. The main stage...

Rotating a surface about a horizontal axis alters the retinal horizontal-shear disparities. Opposed torsional eye movements (cyclovergence) also change horizontal shear. If there were no compensation for the horizontal disparities created by cyclovergence, slant estimates would be erroneous. We asked whether compensation for cyclovergence occurs, and, if it does, whether it occurs by use of an ...

Magnesium alloys have recently attracted great interest due their lightweight and high specific strength. However, because of their hexagonal close-packed structure, they have few active slip systems, resulting in poor ductility and high mechanical anisotropy at room temperature. In the present work, we used a cross-shear deformation imposed by a differential speed rolling (DSR) technique to im...

The microstructure and micro-texture in different areas of a friction stir (FS)-welded DP600 steel were investigated by means electron backscatter diffraction. volume fraction martensite non-polygonal ferrite was evaluated based on the image quality (IQ) parameter. Analysis grain boundaries revealed that sub-grain as well low-angle heat-affected zone (HAZ) (SZ) more than doubled compared to tho...

Friction stir welding (FSW) was performed under the two conditions (rotation speed-traveling speed) of 150 rpm-100 mm/min and 200 rpm-400 using 6 mass％Ni-0.63 mass％C steels. The slightly lower peak temperature significantly higher cooling rate obtained condition mm/min. Texture analysis for retained austenite martensite revealed that parent had simple shear texture, which lead to formation {110...