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Abstract

Designing a casting tool and choosing materials technology parameters calls for special requirements both for workpiece and tool side. After designing the technological steps and procedures I select the cutting tools. Industrial developments take priority in cloud system engineering. I used this system in the casting tool manufacturing process. It is not easy to make a comprehensive and detailed design following technological steps. The allowances and joints were made on the M2L CNC milling machine. The CAM program was made with EdgeCam software. Defining the casting parameters accurately is still a challenge, but in our major it is not the most important. For the future we are planning a most complicated casting tool.

Abstract

Today’s continuously growing society has a strong influence on efficiency within the construction industry. The need to build new homes in a shorter period of time increases. Finding the solution to this problem is a key element in today’s world. In connection with this there was a defining initiation in the 1900s with the development of „type design”, which even today has a significant role in architecture. These „type design” buildings used parts which were prefabricated, making certain phases of construction quicker. At the end of the XX. century the appearance of these plans seemed to be insufficient for the expected result. In the XXI. century there is an attempt to create another plan sample catalogue which can reflect building to productivity and try to minimalize the time for home development.

Abstract

The research focuses on determining the application parameters of a new process developed by Cloos. With the use of Cloos Rapid Weld technology (metal active gas welding), the authors carried out welding experiments on S235JR steel sheets (6 mm and 8 mm thick). The results of the welding experiments were verified by hardness measurement [1–3]. The goal is to establish one side one row suitable welded joint by the used technology.

Abstract

Environmental awareness could also be called environment management, since it is necessary to organize, or rather manage any activities performed in order to protect the environment. A person who cares about their environment in their own household performs organizational tasks that are far more complex than people living in households who don’t care, or care less about their environment. Consider how much extra energy it takes to selectively collect plastic PET bottles, or to properly dispose of used batteries, compared to those who just dispose of these together with municipal waste, out of negligence or laziness. Many think that the activities of the average person don’t matter since there are so many of us on Earth that a single person’s efforts won’t change anything. Man, as a living being, is not capable of making decisions that would solve problems emerging in the next 20, 30 or 40 years; we usually start dealing with issues that we think will matter within the next 2–3 years: but we have admit that 2–3 years are not enough to solve global environmental protection and climate change problems. This way of thinking can easily lead to the decline of humanity in the future.

Abstract

The electrospinning procedure is a relatively simple and fast way of producing polymer fibers with diameters in the micrometer range. The one needle setup is commonly used due to its flexible design and effectiveness; however, this procedure has one major shortcoming; it has low productivity. The disk electrospinning design presented here combines the advantages of the corona and needleless electrospinning setups, namely the small solution surface area and high productivity. We used 33 wt% polyvinylpyrrolidone (PVP) solution to produce PVP fibers with the new design. The average fiber diameter of the produced PVP fibers was d = 446±116 nm, which is ~25 % larger compared to fibers produced with the one needle method.

Abstract

The aim of this paper is to present the design and manufacturing process of a tensile testing machine capable of measuring the tensile strength of polymeric materials. The structure of the instrument is similar to that used in the industry; however, it is budget friendly. The instrument consists of a frame, and two screws which are driven by two stepper motors. An Arduino is used to control the mechanical part of the instrument and to connect it to the software.

Abstract

For air-spring production the fabric winding is what prepares the semi-finished materials. The rubber body, that we called the membrane is made from using several layers of fabric and rubber. Building together these layers defines the mechanical properties. During the winding up, we prepare the cut rubber or fabric layers in rolls. Quality of rolling and the performance to make the semi-finished material, depend on the machine which is used for the winding. To satisfy the higher production capacity it was necessary to create a modern construction using automated systems. To assure the ergonomic expectations was a main viewpoint too. My thesis main goal is to explain, in detail, my design and to prove the device structural solutions using finite element analysis.

Abstract

The presented project was completed using modern, widely used IoT based devices. These include the ESP-01 microcontroller, which is programmable using the Arduino IDE (with its integrated ESP8266 interpreter), and a Raspberry Pi Zero W single board computer, which requires a Raspbian Linux distribution. In this project, an original meteorological station was created (complete with data acquisition), employing various sensors.

Abstract

In this project, an electron tube circuit consisting of a voltage stabiliser, preamplifier, and final stage amplifier circuit was designed. One of the main aims was to reuse as many components and materials as possible, thereby decreasing the project’s ecological footprint. The result is a hybrid electron tube amplifier. The function of the circuits was subsequently measured and analysed using various tests.

Abstract

Quantification of alkanolamines is imperative for health and chemical safety risk reasons. A fast method that requires less equipment has been developed for the determination of free diethanolamine in different types of additives. Repeatability tests were carried out. The free diethanolamine content of commercially available additives has been determined. We have recommended industrial applicability.