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The influence of the parameters of stereolithographic 3D printing on the printing time
Kůst, Martin ; Škaroupka, David (referee) ; Zatočilová, Aneta (advisor)
This paper deals with stereolithographic 3D printing (SLA). It describes both upper and lower lighting design and shows the differences between laser light and DLP (Digital Light Processing) projector. Another part is to find the dependence between the time of exposure and the thickness of the layer also known as material profile on the DETAX, gray. So another work and further experiments can be done using this material. These experiments are performed on Way2production's SolFlex650 SLA printer. For ease of use with this printer, parameters affecting print time have been identified and a model is then found to calculate the total print time.
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Development of process parameters for the stereolithography
Vítek, Jan ; Škaroupka, David (referee) ; Paloušek, David (advisor)
This bachelor thesis deals with the search for optimal process parameters to reach a high strength of the Detax Solflex model material, with the DLP (digital light processing) 3D Solflex 650 printer. In the first part of this thesis the principle of printing using a laser and using a DLP projector and their comparison are presented. Further information about materials and impact of the process parameters on a printing are discussed. Based on a knowledge two assumptions were set: influence of exposure time and influence of layer thickness on strength. Firstly, samples were tested by the hardness Shore D test and the results from the test were compared. New samples for the stress test with the optimal set of parameters given by the previous test were printed and tested. Process parameters influence on strength was determined from the achieved results.
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3D Lattice Structures for Application in Selective Laser Melting technology
Červinek, Ondřej ; Škaroupka, David (referee) ; Vrána, Radek (advisor)
Additive technologies allow manufacturing of components with very complex shapes which are difficult to manufacture with conventional technologies. Among these technologies belongs the Selective Laser Melting (SLM). Suitable applications of SLM include manufacturing of light-weight 3D structures like lattice structure or an organic geometry called gyroid. This bachelor thesis is focused on creation of models of gyroid structure and its application to parts followed by manufacturing with SLM. Series of models were made with mathematical software. Implicitly defined equation were used for better geometry coordination of created models. Options utilization and manufacturability of gyroid structures were tested within application into turbocharger impeller. At the end of this thesis was successfully manufactured the impeller including two types of gyroid structure (single-gyroid and double-gyroid)
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Surface finishing of plastic parts
Ševčík, Igor ; Škaroupka, David (referee) ; Paloušek, David (advisor)
The purpose of this bachelor’s thesis is processing of theme surface finishing of plastic parts, specifically products of 3D printing made of Acrylonitrile butadiene styrene (ABS), and consequent experimental execution of chosen methods. The thesis includes analysis of current knowledge, description of various procedures and possibilities of surface properties modification. The aim of treatment is to allow further processing of plastic objects, such as metal coating. Experiment accomplish-ments are listed and the effect of surface treatment is evaluated afterwards.
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Design of the Vehicle for the System of Sustainable Urban Mobility
Škaroupka, David ; Kotas, Patrik (referee) ; Pelikán, František (referee) ; Zdařil, Zdeněk (referee) ; Zvonek, Miroslav (advisor)
This dissertation is a response to the negative trends in urban mobility, which led many authors to conclude on the need for a new approach to personal transport in the cities. The work has creative character, but in the conceptual level, it is taking into account the specific needs of sustainable urban mobility and build on the existing innovative transport solutions. The result of dissertation is a vehicle vision, understood as an element of urban mobility that respects the character of the zones of free movement of persons, but it is also suitable for transport over longer distances.
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Design of sports craft.
Škaroupka, David ; Karásek, David (referee) ; Křenek, Ladislav (advisor)
This diploma theses is concerned with the meaning of sport sailing and sailing in general. This draft develops a small craft conception with regart to the characteristics of the machines in the future, where control systems will actively participate with checking operations and facilitate not only running complex unstable systems but above all, smooth processes operated by man. The designed sports craft is intended for three actively living passengers with positive relations to high adrenalin activities who long for a very near contact with the nature.
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Surface finishing of plastic parts
Nguyen, Manh Thanh ; Škaroupka, David (referee) ; Paloušek, David (advisor)
The main topic of this barchelor thesis is surface finishing of plastic part manufactured by FDM technology. The thesis includes experimetal part which aim is to test various possibilities of surface finishing by acetone vapour etching. Two different samples of ABS materiál will be used for testing. Changes of dimension and geometry will be observed.
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Design of the car headlight
Struhár, Slavomír ; Křenek, Ladislav (referee) ; Škaroupka, David (advisor)
The topic of this bachelor's thesis is design of headlamp for a further unspecified automobile. The first part of the thesis is formed by Overview of current knowledge dedicated to the history, the present and the near future of headlamps of series-production cars. The following sections describe the objectives of the thesis, the process of the design itself and present the final design of the headlamp. The final part evaluates the results of the work with respect to the stated objectives.
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Friction components produced by rapid prototyping
Pečenka, Tomáš ; Škaroupka, David (referee) ; Omasta, Milan (advisor)
The main aim of this bachelor thesis is to make an overview of use of additive technology for production of friction components. The first part is concerned on review of additive methods and type of materials. In the second section are situated applications of this technology for fabrication of friction components. The main goal of last part is research in area of tribology of parts manufactured by additive technology.
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Surface finishing of plastic parts
Ševčík, Igor ; Škaroupka, David (referee) ; Paloušek, David (advisor)
The purpose of this bachelor’s thesis is processing of theme surface finishing of plastic parts, specifically products of 3D printing made of Acrylonitrile butadiene styrene (ABS), and consequent experimental execution of chosen methods. The thesis includes analysis of current knowledge, description of various procedures and possibilities of surface properties modification. The aim of treatment is to allow further processing of plastic objects, such as metal coating. Experiment accomplish-ments are listed and the effect of surface treatment is evaluated afterwards.
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