investigating the export function of border markets in iran, using the ann approach ali falahati faculty of economics razi university of kerman minoo nazifi naeini sahar abbaspour abstract nowadays, trade has been introduced as an engine of growth and development in developing countries so states are required to participate in international trade more seriously. one way for expanding participat...

The presented article deals with the influence of heat treatment C45 steel on surface quality after turning. Turning is a machining technology used to prepare specific geometrical characteristics and dimensional quality. In present paper, same turning conditions were for differently heat-treated steels. soft annealed state, normalized hardened quenched tempered at 530 °C state 660 have been ana...

Fatigue damage onset involves a transformation of mechanical energy. This is in part spent into work plastic deformation and fracture transformed heat. Therefore, different thermomechanical heat sources are activated during fatigue loading cycle, resulting temperature modulation that can be characterized by its frequency content. Several studies have monitored the on samples undergoing high-cyc...

Recycling waste concrete has become a large problem in developing countries. The aim of this work is to provide guidance for screening particles and improving efficiency. First, the elastoplastic collision model established calculating coefficient restitution with different compressive strengths. Then, bar circular vibrating screen applied simulate process by using discrete element method (DEM)...

Abstract Laser surface hardening is rapidly growing in industrial applications due to its high flexibility, accuracy, cleanness and energy efficiency. However, the experimental process optimization can be a tricky task number of involved parameters, thus suggesting for alternative approaches such as reliable numerical simulations. Conventional laser models compute achieved hardness on basis mic...

The analysis of heat transfer in solid bodies with orthogonal geometries and knowledge thereof, is vast importance different fields engineering research. An important field study the thermal machine-parts that most cases are designed shaped geometries. Nevertheless, due to high complexity cost experiments represent, FEM numerical solutions used foresee on these components. These methodologies c...