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Open access

Ádám Bertók, Viktor Gonda and Károly Széll

Abstract

For metal forming problems, even for a simple forming technology, finite element analysis can provide a solution for calculating deformations, determining stress and strain distributions. The aim of this study is to create a parametric finite element model for deep drawing technology, by which technological optimization as well as theoretical problems can be solved. By performing parameter studies, numerous cases can be analyzed.

Open access

Tamás Faitli and József Tar

Abstract

While the forward kinematic task of robots can be solved easily through homogenous transformation matrices, the inverse kinematic task leads to difficulties as the construction of the system becomes more complex. In this paper, a solution has been worked out for a three Degree-of-Freedom (DOF) robot-arm based on recent research, by the use of a novel, fixed-point transformation based technique.

Open access

Gábor Szögi

Abstract

The purpose of my research is to provide insight into the current state of smart cities. According to the everyday language, settlements use digital solutions for smart cities, which make life easier for people, who living there. The article demonstrates the impact on smart cities and how complex this concept is in practice. A smart city is constantly exploring and analysing the effects of the developments and innovations introduced.

Open access

Edgar Marcial Pimentel and István Nagy

Abstract

This research work is still considered as a theoretical reference material for transmitting the important role that thermoelectric materials play in evolving reality of our world. In this update, a brief reminder of the basics behind thermoelectric materials is provided, followed by some of the most recent developments, whether successful or not, in the attempt to create new more efficient materials for heat recovery within the coming years. One of the approaches deals with an innovative way to produce an already existing base material for thermoelectric application, whilst the other approaches describe new possibilities that were attempts to reach a higher dimensional figure of merit zT.

Open access

Alíz Éva Máthé and Cristian Ciplea

Abstract

The realistic response of the steel frames cannot always be investigated with idealized rigid or articulated joints. For sideways loads, significant calculation errors may occur if the modeling of the joints does not take into account their most realistic behaviour. The use of semi-rigid joints, both in design and construction, can result in favourable structural properties in the case of steel frames, especially in seismic areas.

Open access

József Bera

Abstract

With the wide application of engineering technologies, environmental aspects increasingly focus attention on safety. Reducing environmental impacts also affects operational safety, and because of the adverse effect, there is a dual situation in the relationship of these two areas. On one hand, maintaining the acceptable environmental status is closely related to the secure operation of the technologies, on the other hand, by ensuring safety, the risks of the new environmental impacts shall be managed. Such risks prevent the development of a dynamically balanced environmental system. Based on the examination of both the environment uses and the operational conditions, we have reached the conclusion that we will analyse environmental risk management in the context of safety. In the first phase of the research we reviewed the relations between safety and the modern environmental problem.

Open access

Beatrix Fregan, István Kocsis and Zoltán Rajnai

Abstract

Industry 4.0 is considered as the digital transformation of manufacturing. Changes due to digitalization are running at a continuously accelerating speed, developments change our whole world, and completely changing the production and labor markets. An overview of the labor market effect of overall digitalization is provided. Predictions and forecasts for labor market phenomena due to robotization are given in terms of overall changes in employment. Changes in employment structure are influenced by several factors of computerizability of the individual work activities of various jobs.

Open access

Balázs Kulcsár

Abstract

The proportion of renewable energy sources must be increased to reduce the energy dependence and energy cost of municipalities, to increase energy security and to consider aspects of the environment. The purpose of this research is to determine how and to what extent small-size household power plants (SSHPP) – which belong to the category of smallest-scale power plants –can contribute to providing the electricity supply with regard to all the Hungarian settlements.

Open access

Kinga Éva Paczolai, Balázs Kósa and Renáta Németh-Szigeti

Abstract

The World Heritage Square at Pécs is to be constructed in the framework of a program dedicated to developing the locations of the World Heritage. The aim is to rehabilitate the squares belonging to the World Heritage in the hope of increasing the attendance on a conceptual thinking. The study focuses on the marked areas with the purpose of connecting the Castle Wall and its walkway. The rehabilitation even extends to redesign the area in front of the Old Christian Mausoleum.

Open access

Zsolt Mihály Szabó

Abstract

Today, the state, its organizations and its citizens have become vulnerable to the complexity of complex electronic information systems in the cyberspace of Hungary, without which state operations and the provision and use of different services become unworkable. In addition to the modern economic system, society is not prepared to operate without lost infrastructure, assets or services, so they must clearly be protected especially because the information used and generated in their operation and the data managed represent significant assets.