State actors are becoming increasingly interested in the economic potential and security dynamics of Arctic space as effects global climatic change rapidly shape world’s polar spaces. National governments have responded to these changing by tailoring their defence policies reflect what they believe be most pressing challenges presence region. This article asks; how is north framed whose voices ...

The Nd:YAG laser welding was used to join the binary NiTi alloy wires with different compositions(Ti–50.0 at.%Ni and Ti–50.9 at.%Ni) which had the same diameter of 1 mm. The wires were welded with different parameters, including impulse width and welding current. The aim was to assess the influence of the laser-welding process on the microstructure and mechanical properties of the welded joint ...

Different methods have been applied to refine various characteristics of the zone (or nugget) obtained by friction stir welding (FSW). In the current research, joining components are vibrated normal to the weld line during FSW to refine the zone microstructure. This process is described as friction stir vibration welding (FSVW). The effect of FSVW on mechanical properties, corrosion behavior, a...

Complex systems are composed of several plain interacting independent entities. Interaction between these entities creates a unified behavior at the global level that cannot be predicted by examining the behavior of any single individual component of the system. In this paper we consider a welded frame of an automobile trailer as a real example of Complex Technical Systems, The purpose of this ...

Z. Burzić, Military Technical Institute, Belgrade, Serbia. Dž. Gačo, F. Islamović, E. Bajramović, Technical faculty, University of Bihac,Bihac, Bosnia and Herzegovina. M. Burzić, University of Belgrade, I.C. Faculty of Mechanical Engineering, Belgrade, Serbia. In present paper, experimental investigations have included the eff ect of exploitation conditions (exploitation time and temperature) o...