This diploma thesis deals with the surface modification of 3D printed metallic materials. The research part presents the most used methods of additive manufacturing and their process parameters influencing the quality of printed components. Defects arising during these processes and the techniques used to eliminate them are also described. In the experimental part of the work, the optimization of electrochemical polishing parameters was performed. The aim was to modify the rough surface of the components and thus prevent the formation of defects on the surface. The mechanical properties were investigated by means of three-point bending under static and dynamic loading. Fractographic analysis was performed on the quarry surfaces.

This diploma thesis deals with analysis of particular elements of ground water storage tanks, their comparison and describtion of their characteristic. Basic information of designing volume of accumulation tank is included in the first part followed by a key section where particular construction parts and elements are described. In the next section, new types of water tanks are mentioned. In the final section of this thesis, study of 5 existing water tanks was accomplished. A technical recommendation is summed up in the final part that can be taken into account when constructing a new water storage tank.

The thesis deals with the problem of force loading during machining of thin-walled parts. In the theoretical part, the force load applied during milling and the possibility of measuring of the force loading during milling is analyzed. Further the work focuses on the machining of thin-walled parts, problems in machining of these parts and the possibility of eliminating these issues. The practical part deals with the design and realization of the measurement of the force load on the selected components. The thesis also presents a comparison of the simulation model of deflection of thin-walled parts with the values measured in real machining.

The subject of the submitted thesis "Application of marketing in management of companies" is an analysis of the current market situation where the company ABC operates and on the basis of this analysis to create a marketing plan. The theoretical part is devoted to defining the concepts of specialized literature, mainly focusing on the process of creating a marketing plan. The following section is devoted to, based on lessons learned from the theory itself, actual analysis and designing a marketing plan for the company ABC.

The dissertation deals point at issue of nonconforming components in CCI CR, Ltd., Special focus is on errors in machine cutting and in marking components, which lead to discrepancy of components with manufacturing documentation. The goal of dissertation is star-up a remedial process, which will reduce defective components. The result will be tested by the Six Sigma methodology.

The diploma thesis is focusing on research of possible damage mechanism of U-tubes in a heat exchanger placed within a gas waste incinerator unit in a factory dealing with chemicals manufacturing. In the first phase of the research, in which a thermo – hydraulic calculation is being made, a specialized software tool HTRI Xchanger Suite® v6.00 is used. Using the software it is possible to simulate certain operational conditions in which the heat exchanger operates. The output from the first phase of the solution is to obtain a set of temperatures of the tube material throughout the length of the tubes. These data are consequently used in the second phase of the analysis. The second phase of the analysis is dealing with thermal lenght dilatation differences assessment between tubes in the tube bundle as a predected reason of oversize tension formed in tube material and damage following afterwards. Conclusions of the calculation made in the second phase of the analysis are then checked by calculation via ANSYS Workbench 11.

This thesis is dedicated to a study of manufacturing of aluminum parts at Alfa company. A complete analysis of the company's main product which are roller doors for commercial vehicles is elaborated. The thesis is based on a existing operation of the company and tries to find the optimal solution for the future. The result is the definition of a new solution and determination it’s operating costs, economic impacts and suggestions for improvement. Key words roller door, aluminum profiles, slat, roller shutter, manufacturing of aluminum parts.

This thesis deals with issues related to the identifiability and traceability of parts manufacturing company engaged in the aviation industry. The paper summarizes the international standard ČSN EN ISO 9001 and ČSN EN 9100, according to which the company is certified, and other in-house standards under which it dealt with the interpretation of international standards. Subsequent to solve the problem is the result of consultation within the company and market research, dealing with the identification of products. The proposed solutions are a self-adhesive label, which allows companies to leverage existing technology of barcodes generated by the SAP system and the simplicity of using the stickers. It is possible their reapplied after each operation, which was performed on the work piece and the staff are on the barcode system used, ie no need for complex training.

The aim of this thesis is a comparing single valve train motion (SVT) and complete valve train motion with a flexible camshaft focused on dynamic characteristics. In this thesis is also performed kinematics analysis in the VALKIN software. Dynamic analysis is solved in the MBS software Virtual Engine. Influences to the valve train motion are described in the conclusion

The objectivie of this study was to describe the splanchnology and topography of the female reproductive organs of the African lion. The reproductive organs of three embalmed cadavers from three-year-old known aged nulliparous lionesses weighing between 120 kg and 140 kg were studied. Two fresh carcasses from another study were used for some of the topographical photos since these rendered better quality images. The project was approved by the Animal Use and Care Committee and Research Committee of the University of Pretoria (protocol number V038-09). The topography and splanchnology of the reproductive organs were studied and described in situ and after removal. The kidneys were located far caudally in relation to the thirteenth ribs with the left kidney further caudal. The suspensory ligament was very well developed. It originated in a fan-like manner from the dorso-lateral abdominal wall lateral to the kidney extending up to a few centimetres cranial to the kidney. The proper ligament of the ovary was well developed and consisted of several clearly distinguishable bands. The broad ligament resembled that of the cat with the exeption of the cranial part of the mesovarium being very well developed. The round ligament was well developed and inserted on the medial femoral fascia. It therefore did not extend to the vulva as in other canine and feline species. The left ovary was longer, wider and heavier than its right counterpart and the ovaries were relatively small in relation to body weight. The ovarian bursa had a short mesosalpinx that did not cover any part of the ovary and the fimbriae extended the entire length of the ovary. The urethral tuberculum as well as the urethral crest was very well developed. The left uterine horn was longer than the right and the tip of the uterine horn was located dorsal to the proper ligament. The uterine tube was prominently convoluted, situated entirely on the lateral aspect of the ovary and was found to open directly into the tip of the uterine horn and not onto a papilla. The female reproductive organs of the African lion resemble that of the domestic cat and dog with some major differences especially to the size and development of certain structures. The clinical relevance of these differences has to be debated and some thoughts might include the following: 1) does the suspensory and proper ligaments of the gravid uterus contract to suspend the entire uterus closer to the body wall during hunting since the lioness is the primary hunter in the pride? 2) does the lioness have to roll on her back and extend her back legs after mating to facilitate sperm entering the dorsally located tip of the uterine horn while the round ligament stabilises the terminal part of the uterine horn, and does this have a bearing on the fact that multiple copulations are required over a prolonged period for conception by lions? 3) do more ovulations take place from the bigger left ovary and? 4) are more conceptusses borne by the longer left uterine horn? The anatomical information obtained during this study was subsequently applied in a surgical study on sixteen lionesses using laparoscopy to perform laparoscopic ovariectomy and salpingectomy. The availability of these two laparoscopic procedures subsequently led to a wider interest to its application in population control of lions in the smaller national parks of South Africa. / Dissertation (MMedVet)--University of Pretoria, 2012. / gm2014 / Companion Animal Clinical Studies / unrestricted