This compilation presents the main stages of the development process of the University of Óbuda over three centuries, from industrial education to higher education and finally, to the participants of the Conference. The first legal predecessor, the Secondary Industrial School (the Upper Industrial School located at the Vocational School), during the period of technics, led the way to the establishment of Donát Bánki and Kálmán Kandó, later to the Technical College of Light Industry, then to the establishment of an integrated Budapest Technical College, and onward to the successor, the University of Óbuda in the XXI. Century.
Nowadays, concerns related to mankind’s increasing and destructive impact on the environment have influenced and changed the paradigms of product development; this in turn has brought about the appearance of environmental considerations in the creation and design of new products. Numerous industrial sectors have changed their processes of product development and production to meet the ecological requirements. Issues such as the scarcity of natural resources, increasing consumption and increasing pollution also present a number of problems. This article presents a process of comparing new alternatives with a specific methodology of decision-making. It is primarily focused on the use of rare natural materials and resources that are extracted and processed.
Attila Zakariás, Tamás László, Csaba Krizbai, Tamás Szabó and Norbert Demeter
In the 21. century, the job of a horticulturist is made easier with the help of a thermogradient table, with which the developmental stage of plants in different temperature conditions can be observed, this way, a plant's optimal ambient temperature can be found. The price of a thermo-gradient table is very high, it can reach thousands of euros. This is the reason why we had the idea of making our own thermo-gradient table, which is much more competitive, and can ease our institution horticulturist’s work.
Thermal conduction is a heat transfer mechanism. It is present in our everyday lives. Studying thermal conductivity helps us better understand the phenomenon of heat conduction. The goal of this paper is to measure the thermal conductivity of various materials and compare results with the values provided by the manufacturers. To achieve this we assembled a measuring instrument and performed measurements on heat insulating materials.
Glue applying machines allow the application of glue to a surface during production. The purpose of this work is to solve certain problems with the development of a new machine. In this paper, measurements and tests made before designing the new machine will be presented. The parts of the machine that that have been designed will also be presented as well as a simulation by finite element method conducted for a part of the machine’s support frame that has a critically dangerous cross-section.
The aim of this paper is to present a granulate manufacturing machine that will be used for recycling plastics in a laboratory at the Sapientia University. In order to produce granulates of recycled plastics the plastic part has to be ground and then extruded. The extruded polymer filament then can be converted to granulates. We present the working principle, design steps, structure and 3D model of a small scale granulate producing machine with a cost-effective approach
This paper discusses the design steps, working principle and structure of a small-scale thermo-plastic extrusion machine that will be used in a laboratory at the Sapientia University. The aim of the laboratory is to present the polymer processing technologies by student-built machines and to stress the importance of plastic recycling. In order to recycle plastic parts a grinding process is necessary, followed by extrusion. During the process the machine melts the polymer and extrudes a filament that can be converted into granulates or used as it is. The structure of the extrusion machine is rather similar to that of a commercial one, however it focuses on presenting the manufacturing principles and cost effectiveness.
The price of firewood has increased substantially in the last couple of years due to the high volume of export. The branches and smaller diameter pieces are considered leftovers and are not exportable, however they are suitable as firewood. Chainsaws are used to cut the larger diameter wood, but this way is not efficient for cutting up branches and smaller diameter wood pieces. In this paper we present the structure, working principle and the 3D model of a machine that can be used to chop smaller diameter wood branches in a simple and efficient way.
Nowadays, we encounter automation all around us; whether it be at work, in industry, public places, our homes, or on our handheld devices. It is unavoidable. In this rapidly developing world machines are continuously replacing the human workforce, due to their superior workload capabilities, absence of loss of concentration, greater accuracy, speed and efficiency. In this way, machines surpass manpower in many fields. This project presents an automated lap time measurement system built using NI components which will save the voltages tied to the lap time, and measure human and machine lap times. The data will then be compared and evaluated.
The necessity for the knee prosthesis is confirmed by the large increase in the number of patients suffering from arthrosis, which is a present-day disease. Despite this need, there doesn’t exist an optimal knee prosthesis. Nowadays the development of the knee prostheses is progressing. It is very difficult to define the required geometry with traditional methods, because the movement conditions to be created by the prostheses should be similar to the movements of the human knee. During previous research the biomechanical research team of the Szent István University occupied with experimental measurements of the healthy human knee joint movement. In this paper I would like to introduce a method of prosthesis geometry development. As a result, a knee prosthesis geometry has been created which is approaching the movement form of the real human knee joint.