In this paper we propose an approach we call it a “Blind Man’s” approach to shape description in which tactile information is sensed from the fingertips of a dexterous hand. Using this contact information, we investigate two complementary methods for curvature estimation. The first method is based on rolling one finger to estimate curvature at a point on the surface. We use Montana’s equations ...

Original scientific paper Hot rolling of CuZn27Al4 shape memory alloy results in the forming of defects in austenitic crystals. The defects such as dislocation and deformed boundaries of austenitic grains affect both "classical" material properties and the specific properties related to shape memory. Rolled and quenched alloy (ausforming treatment) shows hardening proportional to the value of i...

The tensile properties, 7-E transformation and shape recovery have been related to the orientation of tensile axes i.e., along rolling direction(specimen 'A') and toward 45" to the rolling direction(specimen 'B') in a cold-rolled and then annealed Fe-1SMn -10Co-SCr-3Si alloy. It is revealed that the deformation modes of the specimens 'A' and 'B' with respect to tensile axes are not the same; te...

Abstract Models that introduce rolling resistance at the contact are widely employed in simulations using discrete element method (DEM) to indirectly represent particle shape effects. This approach offers substantial computational benefits price of increased calibration complexity. work proposes a simplify resistance. The key is an empirical relation between parameter (rolling friction) and 3D ...

In this study, the effect of cold rolling process on the microstructure and texture evolution in 1wt. % Si non-oriented electrical steel was investigated. For this purpose, all samples were processed through single-stage hot rolling at 1100 ° C and two-stage cold rolling (cross rolling and unidirectional rolling) with intermediate annealing at 650 °C for 35 seconds. Finally, all of them were fu...

Abstract Variable gauge rolling is a new process to obtain plate for which the thickness changes continuously by and dynamically adjusting roll gap upward downward in process. This technology an effective method producing lightweight, low-cost, economical plates. However, variable unsteady process, force deformation parameters are complex. In this research, based on minimum energy theory of var...