This study focuses on the creep response of meso-length scale systems, whose smallest dimensions lie in range a few hundred micrometers to millimeters. Here, uniaxial experiments were performed commercially pure Al polycrystals using samples having (or, characteristic sample) dimension 500 μm 7 mm “five”-power law regime. Compared interior, near-surface region developed compliant dislocation su...

Classical plasticity models, being scale independent, cannot capture any size depedent behavior. A remedy is to adopt a gradient plasticity model at the sub-granular (meso) scale to account for the different micro-processes leading to the various size effects. In this contribution, we adopt, at the meso scale, the isotropic gradient plasticity model in [1] which incorporated the plasticity rota...

1.—Department of Physics, The Ilse Katz Center for Nano and Meso Scale Science and Technology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel. 2.—Department of Electrical Engineering, Solid State Institute and Microelectronic Center, Technion, Haifa 32000, Israel. 3.—Department of Materials Engineering, The Ilse Katz Center for Nano and Meso Scale Science and Technol...

Concrete is a heterogeneity material consisting of mortar and aggregate in meso scale. Evaluation of fracture process in this scale is useful to clarify the material characteristics of concrete. However, analytical approach in this scale has not been carried out enough yet. And in meso scale, mortar-aggregate interface is the weakest part in concrete so that it is considered that its material p...

We use a high quality five-hour sequence of images of the solar photosphere taken at the Swedish Solar Vacuum Telescope, La Palma, to study the relation of meso-scale divergence with the amplitudes of photospheric intensity oscillations. Meso-scale flows are determined by local correlation tracking of the granulation. Statistical evaluation of the co-location probability of regions with more th...