Mechanical Examination of Chicken Vessel with Custom-Built Experimental Equipment

Cardiovascular disease has been decimating humanity for decades. In vivo examination of blood vessels is of great help in the development of numerical models and simulations that can help physicians significantly improve sufferers’ quality of life. For such models, the different mechanical characteristics of the vessels are the input data. Several such mechanical properties of the vessels, such as modulus of elasticity and tensile strength, are determined by a tensile test. In the course of our research, an experimental device was developed and tested which is suitable for biaxial tensile tests of blood vessels, which we present through the examination of chicken blood vessels.

Curvature Measurement of Thin Plates with the Help of Digital Image Processing

The verification of different plate bending problems require a punctual measurement method of the bent shape. However, with a proper curvature measurement procedure the calculations can be made more accurate. This is due to the workaround this method provides by neglecting the inaccuracies of the beam theory and the tensile tests, measuring directly the function between the curvature and bending moment for a given sheet metal. The measurements in this paper are made with the help of a digital camera and telephotographic lens. The evaluations of these images are compared to the results obtained from the Euler-Bernoulli beam theory. While the results regarding the curvature measurements have a significant deviation, the shape of the plate is in good agreement with the numerical calculations.

Investigation of the Force Vectors Acting on the Potato in the Clamping Finger Type Dosing System of a Potato Planter

The operational accuracy of the dosing system of the potato planting machine influences the planting plant spacing, and indirectly the crop yield. The operating accuracy depends on the design of the dosing system, its kinematics and the forces acting on the planting tubers. This dissertation presents the force vectors acting on the potato in the dosing system of the guided clamping finger type potato planting machine and their spatial motion during the dosing process. Examination of the vectors reveals the improved possibilities of tuber fixation.

Analyses of River Oil-Spills and Actual Solving Methods

Nowadays, there is an increasing emphasis on the problem of water quality. Of the many polluting effects, oil pollution is perhaps the most harmful, but its effects are being studied mostly on large seas and oceans worldwide. In the case of Transylvania and probably the entire country, pollution of rivers by oil – based on yearly occurrence – has a larger effect than that of sea pollution. Every year we observe 40-55 such water pollution events, therefore, analysis and investigation of solution methods is of great importance. This paper attempts to shed light on this issue, presenting also the method currently used by the Romanian Water Authority.

MP-9S Industrial Manipulator Handling and Scrapping Tasks in Industrial Environments

The main goal of the project was to carry out a handling task using a color sensor and thermal sensor, as well as an industrial robotic unit. The selection by color made it possible to represent the sub-process of the production of a sample, where each color can be matched to the corresponding or rejected product. The function of the thermal sensor is to show the delay function for the pro-cess, which occurs when the product does not reach a point in the process at the wrong tempera-ture and needs cooling between the two workflows. The thermal sensor and color sensor were pro-grammed using the ATmega microprocessor, while the manipulator was controlled with industrial PLC. The completed project will serve educational purposes in training for students.

Development of an Active Aerodynamic System for a Racing Motorcycle

MotoStudent is an engineering and economic competition for students to build a motorcycle that will take part in a real race on the Motorland Aragon track in Spain. The Kenji Racing Team, a student team from John von Neumann University, has been participating in this competition since 2016. The design of the motorcycle must be accurately documented towards to the competition organization, and economic and engineering tasks must be solved for the teams. In terms of engineering work, the development of innovation applied on the electric motorcycle is of paramount importance. Nowadays, one of the most popular development areas in motorsport is aerodynamics. Nevertheless, there are few studies about active aerodynamic systems. In our research we present the aerodynamics of motorcycles and the effect of passive and active wing systems on driving dynamics. With this knowledge, we detail the design steps of an active wing system.

Method for Efficient Regeneration of Solvent Mixture: Extractive Heterogeneous-Azeotropic Distillation

The fine chemical and pharmaceutical industries use large amounts of various organic solvents in their manufacturing processes. By reusing them, production costs can be significantly reduced. If we can regenerate waste solvent mixtures, we have the opportunity to reuse them in the production process or in other production processes. Our study illustrates an efficient regeneration process using the example of a four-component solvent mixture. Calculations were performed in a professional process simulator to demonstrate that the highly non-ideal Water-Ethyl Alcohol-Methyl Ethyl Ketone-Ethyl Acetate solvent mixture can be efficiently decomposed into azeotropic pairs and thus regenerated by the extractive heterogeneous-azeotropic distillation technique.

The Developement of a New Shoulder Joint Prothesis System

In our work, we designed a new metal-polymer shoulder implant system that fully meets today’s requirements - minimal invasive technology, a high degree of modularity - and can be personalized as needed. At the same time, its production does not exceed the currently available production technologies. Also, the data and parameters which are needed to design the tailor-made construction are easily accessible, as we have chosen a device that is widespread and commonplace in medical diagnostics and available in any hospital. Furthermore, we have tried to make our system as easy and fast to authorize as possible because it is challenging to place medical devices on the market, especially implants. We have tried to create the cheapest, most economical system and in addition, we wanted to gain the trust of implant specialists, as we incorporated their insights and experiences into our construction through continuous consultation.

Optical Inspection of CPVC Fitting Elbows and Fault Diagnosis of the Production Process

The topic of this study is the optical inspection of CPVC fitting elbows concerning the geometric parameters that can be detected in 2 dimensions. Based on the evaluation of the results, fault diagnosis has been set up for the production line by statistical calculations. The optical inspection was carried out in the Vision Development Module software environment produced by National Instruments, and the data were evaluated using Microsoft Excel.

Analysis of the Treatment of Synthetic Bathing Waters and Their Effects on Seedlings

Synthetically produced bathing waters and their effect on seedlings were analysed in our research. The artificially produced bath waters were treated in different ways. Primarily, simple filtration was performed through a layer of silica sand. During the tests, the obtained greywater was investigated before and after the treatment with the help of various water quality parameters. Irrigation was set as the goal of recycling, and germination experiments were performed on mustard seeds. In these experiments, the synthetically generated treated and untreated bath water was used as irrigation water. Considering the results obtained during the germination, it can be said that the treatment is necessary in any case. Based on the results, it was shown that the filtration was not sufficient, so coagulation was used as an additional treatment method, for which we determined the optimal amount of treatment agent as a starting step.