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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
431

Certifikační postupy pro experimentální letouny / Certification processes for experimental aeroplanes

Soják, Zbyněk January 2008 (has links)
Work includes certification procedures for experimental aeroplanes. Producer must answer individual work for right procedure certification. Office UCL give works and control production procedure aeroplane. Stationery (applications, confirmation, tec.) are part of work and is need make and feed. Part of work is VUT 001 MARABU and technical characteristics aeroplane.
432

Deformačně napěťová analýza a hodnocení mezních stavů částí tlustostěnného potrubí v oblasti creepu. / Stress - strain analysis and creep assessment of the thick-walled tubular structures.

Zouhar, Michal January 2009 (has links)
This thesis deals with the stress-strain analysis of thick-walled pipe parts. The dimension series (characterized by the D/d ratio) of three components are solved, then a direct tube, a torus with constant wall thickness (arcus) and a torus with variable wall thickness (bend). At first, the internal pressure amount, when a fully plastic state for these components is created, is solved. The amount of the limit pressure is determined analytically, numerically and by appropriate normative relations. The results and stress diagrams of individual solutions are mutually compared. Furthermore, these components are solved in the creep and are exposed to the maximum allowable normative internal pressure for 200,000 hours according to the standard – the operating time of components. The place of the maximum equivalent creep strain and the place of the maximum equivalent stress is examined. In these places the principal stresses are depicted depending on the D/d ratio. The results and stress diagrams of individual dimension series are mutually compared. From the available literary sources the condition of the limit state reach is chosen, according to which the evaluation of the limit state reach for individual components is carried out.
433

Konstrukce plastových dílů předního nárazníku sportovního automobilu / Design of plastic parts of the sports car front bumper

Najvar, Petr January 2011 (has links)
This thesis deals with the plastic parts design for VW Scirocco R front bumper. Plastic parts were designed for an injection molding mass production. Besides of designing a shape of the parts based on package, assembly concept, functional and aesthetic requirements, great deal of attention is applied to proper part molding with regard to technological and economic aspects.
434

Výroba součásti "Kroužek" plošným tvářením / Production single parts "Ring" from sheet metal

Stejskal, Luboš January 2012 (has links)
This thesis elaborated within a master degree in 23-03-T002 line, introduces a suggestion of production technology of part „Ring“ by sheet metal forming out of deep-drawing steel W.Nr. 1.0338. Supposed production amount is 250 000 pieces per year. Based on a literary study of problematic of sheet forming for this required part regarding production series, technologies of this of deep drawing and cutting were chosen. According to performed technological calculations, a production process of seven operations was designed. A sequence automatic machine Paust 40 (VVB WMW), was cousin for this suggested process. This machine is particularly appointed for big series and wholesale production of impressions of sheet metal. It is equipped with mechanization and therefore creates a fully automatic line. A tool was designed for this chosen type of machine. Project includes economical evaluations of elaborated of production technology.
435

Možnosti stroje Vernet Behringer při CNC programování / Vernet Behringer tools for CNC programming

Mana, Marek January 2014 (has links)
The master’s thesis is focused on the possibilities of machining lines of the company Vernet – Behringer. The theoretical part is a brief inclusion of the control system ProNC2 between selected commercially available control systems and are compared ways of programming CNC machine tools. On the machine tool of company Vernet – Behringer are processed mainly thin-walled components, that is why is part of the work focuses on the issue of machining thin-walled parts, the distribution of deflection tools and machined parts. The next part of thesis deals with the design and processing of technical documentation for the machined model part. The practical part deals with the possibilities of the machine and method of programming the control system ProNC2. Programming and practical production on machine were proceeded in company SSI Schäfer s.r.o. The work is focused on practical verification of the production process using simulation and production itself. Finally, it was performed technical - economic evaluation of production.
436

Stanovení výkonnosti chladicího okruhu - chladící věž / Determination of the performance of the cooling circuit - cooling tower

Velešík, Aleš January 2015 (has links)
The aim of this work is to determine the performance and description of the cooling circle in the cooling tower. In order to do that there was applied the linear regression approach in order to create structural empirical model of the cooling tower. The data obtained was analysed through QC expert software, which, if correct data applied, identifies suitable model for specific tower. The models created will be used for diagnostics of the cooling circles and as a comparison tool with other cooling towers in the future. Thus, the findings of this thesis are polynoms, which in thic technological setup characterise the models of the cooling towers.
437

Zpracování metodiky pro dělení stavby na bytové a nebytové jednotky / Methodology for Dividing a Building into Residential and Non-Residential Units

Kramářová, Iva January 2010 (has links)
The main target was processing of methodology for dividing of building, into residential and non-residential units, and acquaint with jural operations which preceded this fact. There were also dealt with forms of property, problems and possibilities of dividing the apartment building on separate residential and non-residential units including examples of the declaration of building-owner, resolution of agreements and other necessary documents. Diploma thesis provides a comprehensive overview about problems with flat´s property which is arising from apartment-building dividing at residential units, so they can be self-contained property.
438

Analýza poškození vozidel po malé dopravní nehodě / Analysis of Vehicle Damage after a Minor Car Accident

Psica, Lukáš January 2014 (has links)
The thesis deals with the analysis of small accidents. Its attention is focused on the estimated amount of money needed to repair a vehicle immediately after the accident and later on the real amount that is actually necessary to fix the vehicle. In practice, it often happens that an accident may seem minor at first glance. Only after dismantling of a damaged vehicle and its parts it is found that the damage is much greater than initially predicted. Attention is focused as well on constantly growing insurance frauds. Nowadays, there is no literature concerning this issue.
439

Automatické generování pozic optického skeneru pro digitalizaci plechových dílů / Automatic Generation of Scanning Positions for Sheet Metal Parts Digitization

Koutecký, Tomáš January 2015 (has links)
This thesis deals with the development of a new methodology for automatic generation of scanning positions based on a computer model of the part for digitization of sheet metal parts. Manufacture and related inspection of sheet metal parts are closely connected to automotive industry. Based on increasing general requirements on accuracy, there is also a requirement for accurate inspection of manufactured parts in serial-line production. Optical 3D scanners and industrial robots are used more often for that purpose. Measuring positions for accurate and fast digitization of a part need to be prepared as the manufacturing of the new part begins. Planning of such positions is done manually by positioning of the industrial robot and saving the positions. The planning of positions proposed by this methodology is done automatically. A methodology of positions planning, their simulation for true visibility of the part elements using reflectance model and a simulation of the positions for robot reachability is presented in this thesis. The entire methodology is implemented as a plug-in for the Rhinoceros software. High reduction of time in positions planning compared to the manual approach was observed in the performed experiments.
440

Analýza silového zatížení při obrábění hliníkových slitin monolitními frézami ze slinutého karbidu / Analysis of the force load when machining of aluminum alloys with monolithic mills from Cemented Carbide

Koubek, David January 2016 (has links)
The aim of this thesis is to create the proposal and expansion of knowledge in the field of experimental measurement of force load when milling thin-walled parts made of aluminum alloy monolithic cylindrical shank cutter of cemented carbide (hereinafter referred to as CC). It also discusses the theoretical analysis of the forces generated during milling, and practical approaches to their measurement experiments. This work also deals with the analysis of aluminum and its alloys. The next chapter describes the appropriate strategy for the machining of thin-walled components including defining the problems, that can complicate machining thin walls. The practical part deals with prediction and a following suggestion of the experiment measuring the power load. The last section is devoted to the practical implementation of the measurement of forces during the milling of thin-walled parts with subsequent evaluation and comparison of strength for the record selected from CC carbide tools, including evaluation of roughness parameters.

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