The Examination of Dynamic Effects of Shape Optimized Vehicle Components

Nowadays the sustainability of surface transport requires continual innovation. This must be realized simultaneously in several areas such as traffic control, transport networks control, and the development of the vehicles. To former network design, computer control systems development, as well as statutory and economic regulatory systems are required. Exhaust gases emissions is a main air pollutant and has to be considered in vehicle development. On the efficiency of the internal combustion engines occurring combustion processes does not quite possible to improve significantly. For using electrical vehicle one needs to have appropriate infrastructures i.e. electric charger. However it is clear that with the reducing the mass of vehicles significantly the emissions is reduced. Further advantages of the mass reduction the vehicle dynamic parameters are improvements its examination we are dealing with. The  motivation this study’s to show how a suspension mass reduction affects on vehicle dynamic. For the optimization the initial mass of suspension was reduced approx. by 40%. Decreasing the suspension’s mass shows the vehicle’s vibration is improved

The Impact of the Positioning of Parts on the Variable Production Costs in the Case of Additive Manufacturing

Additive manufacturing is becoming increasingly widespread in many areas of life. One of the main reasons for this is that the machines, raw materials and manufacturing are becoming cheaper. The cheaper the technology, the more widespread it is. The cost of production is influenced by many factors. One of these shows the impact of the part's production positioning (placement in the working space) on costs in the following study. On this basis, we can simplify the traditional pricing strategy. From the results, we can determine how economically it is worth to place the parts in the work area of the machine

Increasing Role of Sections Caused by 3D Modelling

In the last years the role of sections has been grown significantly thanks to solid modelling. Earlier objects were defined by 2D drawings, while cuts or sections were only used for representing their inner parts in case of need. After a short review of types and rules of section drawings we discuss the different ways how objects can be defined with their sections using 3D modelling software.  Finally we discuss that creating solid objects can be used not only in technical but as well as in medical practise. To illustrate them we show examples for both cases: a pump and a human skull

The Effect of Layer Thickness and Orientation of the Workpiece on the Micro- and Macrogeometric Properties and the Machining Time of the Part during 3D Printing

3D printing technologies have developed significantly over the last 30 years, with a major impact on all segments of today's industry. With the introduction of additive manufacturing, product development time can be greatly reduced and printing functional parts directly is also a viable option. Another advantage of additive manufacturing is that it allows greater design freedom than traditional manufacturing technologies. This makes it possible to print products with complex geometries and even different material qualities. In this paper, the authors investigated the effects of printing time, the layer thickness and the orientation on the surface roughness and cylindricity of the printed parts. The aim is to find the combination of layer thickness and part orientation which causes the best results in terms of surface roughness and cylindricity as a function of printing time

Additive Manufacturing in the Military and Defence Industry

The use of additive manufacturing technologies is becoming more widespread. Obviously, such a new and innovative technology should also be used in the defence industry, despite the many strict safety criteria that have to be met in this field. The current paper presents, without being complete, some of the notable military applications where additive technologies are expected to become more significant in the near future

Use of Sections in the Engineering Practice

Thanks to 3D CAD modelling software the role of sections has been grown significantly. In this article we discuss the increasing role of sections. First we present some practical applications such as a section of a track and wheel and we also show how they can be used for mechanical calculations through an example of a shaft weakened with a keyway. The principle of additive manufacturing is also based on sections. Finally sections can be also used at optimizing parts, but in this paper we discuss only the case of shape optimizing

The role of artificial intelligence in the development of railway transportation

Artificial intelligence (AI) has been a revolutionary force in modern transportation systems. In recent years, AI has played an important role in the development of railway transportation. This paper explores the role of AI in railway transportation and the potential impact it may have on the industry. The paper begins by discussing the different types of AI technologies that are being used in railway transportation. It then examines the advantages of AI in railway transportation, including improved safety, increased efficiency, and reduced costs. Finally, the paper discusses the challenges associated with implementing AI in railway transportation and concludes with a discussion of future developments in this area

Optikai feszültségvizsgálati lehetőségek 3D nyomtatással előállított vizsgálati réteg segítségével: Opportunities of Optical Photostress Investigations by 3D Printed Test Layer / Posibilități privind analiza stării de tensiuni prin metode fotoelastice utilizând straturi obținute prin tipărire 3D

This article aims to investigate the applicability of the measurement technology supported by additivemanufacturing. During product development the numerical simulations made on virtual, digital prototypes.The results of the simulations should always be validated in a study conducted in a real model. One of the bestmethod to determinate the stress state on a loaded element is the optical photostress investigation. The 3Dprinted test layer greatly simplify these tests. Kivonat Cikkemben a napjainkban hatványozott mértékben terjedő additív gyártási technológiák esetleges méréstechnikai alkalmazhatóságát vizsgálom. A termékfejlesztés során a numerikus szimulációk, virtuális, digitális prototípusokon végzett vizsgálatok eredményeit mindig célszerű valamilyen valós modellen végzett kísérlettel validálni. Egy alkatrész adott terhelés hatására kialakuló feszültségállapotának meghatározására a legjobb módszer az optikai feszültségvizsgálat. A vizsgálathoz szükséges réteg 3D nyomtatással történő előállítása nagymértékben egyszerűsítheti ezeket a vizsgálatokat