In this paper we present a technological problem encountered in the machining accuracy of the parts for aerospace, made of aluminum alloy extruded profile with 7 meters length. Those parts have very tight tolerances and on milling process appears deviation due to thermal expansion effect, which influences the repeatability of machining processes. T...

By Stefan Adrian Moldovan, Vasile Nasui, Marius Cosma

A new, precise, scalable multi-purpose gripper system for academic research purposes is proposed. The multi-purpose gripper is intended to be easily adapted to different tasks and object sizes. The gripper system is driven by two separate motor-gear-lead spindle units, operated by a small CNC control. Software running on the CNC unit is completely ...

By Steffen Epple, Rolf Jung, Cristian Barz, Vasile Nasui

The use of ceramic materials in thermal pulverization technique has led to a massive enlargement of the range of areas in which they find their use. Due to the large hardness, the dielectric properties, the resistance to high temperatures, ceramic materials find many applications in areas such as the automotive industry, the aviation industry, the ...

By Laura Maria Benea

The liberalization of the Romanian energy market has led, for some companies in the energy sector, to the necessity of marketing campaigns. If for a long time, individual consumers had the status of consumers and, implicitly, supply companies had their own regional market, the passage of consumers into the category of eligible ones also generated c...

By Stet Mihaela

The paper presents some theoretical aspects regarding ecological politics. Due to the advanced environmental damage in the past decade, the involvement and the responsibility of international and political actors has increased. The impact of human actions over the environment is one of the main causes of the damage in this field. The role of politi...

By Octavia Domide

The postwar period of the rapid social change has brought not only a specific framework in which social work develops but it has also brought ever increasing complex social problems that require new methods of work and different approaches. Legislative regulations, high demands and expectations of skilled workers, and present lack of interest of th...

By Nikola Vojvodić, Dragana Savić Pešević, Mladen Ivic

The paper presents a viable success alternative for solar energy valorification to generate electricity for city streets lighting system in Baia Sprie town. The electricity provided by solar power plant starting on 2016 and it’s used for city streets lighting system with partially replace for conventional electricity. Within the Romanian Regi...

By Valeria Mirela Brezoczki, Gabriela Filip

The main goal of this paper was to obtain all acceptable locations for siting of wind turbines in the region of Central South Serbia. One of the possibilities to increase the rentability of the wind farm is to reduce the transport loses, using produced energy as close to the production site as possible. The estimations were obtained using the WAsP ...

By Predrag Miodrag Živković, Mladen Tomić, Dragana Dimitrijević Jovanović, Jelena Janevski, Mirko Dobrnjac

The devices that convert heat into usable electricity and use the three established thermoelectric effects known as the Peltier, Seebeck and Thomson effects are thermoelectric generators (TEG). These devices can generate power how long as there is a heat source. TEGs are made from thermoelectric modules and the cost of this modules is high, but the...

By Adina Pop-Vadean, Paul Petrica Pop, Tihomir Latinovic, Cristian Barz

The general form of the Biot-Savart law is referring to a closed loop, but it can be integrated over a finite length solenoid to calculate the external magnetic field in a specific point, at a rated distance from the center. The law states that the point of measure must be on the longitudinal axis of the solenoid. In real cases the point of measure...

By Bogdan Iuga, Tirnovan Radu-Adrian