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Application of modern technologies for production of complex shape surfaces
Varhaník, Matúš ; Sadílek, Marek (referee) ; Drbúl,, Mário (referee) ; Sedlák, Josef (advisor)
A set of modern production technologies was applied in the design and production of the individualized femoral component of the total knee endoprosthesis. Before starting the design of the implant itself, the Ti6Al4V material produced by SLM 3D printing technology was tested in terms of tribological contact with the articulation member made of high molecular weight polyethylene. The obtained results confirmed the possibility of using this technology for the production of the semi-finished product of the intended implant. Another series of tests gradually defined the characteristics of the technological-production process in terms of the direction of printing, heat treatment, the method of processing the functional surface and the morphology of the surface. The deposition of coatings using PVD technology was aimed at increasing the functional properties of the implant, such as antibacterial properties, reducing friction and increasing wear resistance. Coatings testing in the categories of topography, adhesion, cohesion, delamination and coefficient of friction successively generated a winner from among the 3 tested coatings (TiN, WZrB, TiCC). The final part of the dissertation frames the acquired knowledge and transfers it to the pre-production and production phase of the creation of the femoral component of the total knee endoprosthesis. During this phase, knowledge from the field of reverse engineering, construction and chip machining technology is applied. The output of the work is an implant, the production of which included the use of a total of 4 reverse engineering software solutions, CAD/CAM support, CNC milling of general surfaces, polishing of the functional part and PVD coating.
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Analysis of the Impact of Technological Processes on the Properties of the Functional Areas of Bearings
Fišerová, Zuzana ; Čep, Robert (referee) ; Sadílek, Marek (referee) ; Kouřil, Karel (referee) ; Chladil, Josef (advisor)
The dissertation is focused on the bearing production technology issues. The aim of the thesis is to investigate and evaluate the influence of the technological processes on properties of the functional surfaces of an outer bearing ring. The development, rolling, grinding and turning have been selected as basic technological processes. The subject of the surface integrity research on test samples is the measurement and analysis of the quality of the machined surfaces and residual stresses in the surface layers of the bearing rings. The comparison is made in relation to the previous operations - rolling, turning and grinding.
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Obtaining digital evidence for criminal proceedings
Sadílek, Martin ; Gřivna, Tomáš (advisor) ; Říha, Jiří (referee)
Obtaining digital evidence for criminal proceedings Abstract The present diploma thesis analyses the criminal law procedural instruments that can be employed by the law enforcement authorities of the Czech Republic in obtaining digital evidence, mainly focusing on Act No. 141/1961 Coll., the Criminal Procedure Code. The first chapter focuses on analysing the digital evidence concept, considering various approaches to its definition. Consecutively, the term is defined for the purposes of the present thesis, and the chapter concludes with a description of the digital footprint attributes. The second chapter addresses international regulations, namely the Convention on Cybercrime, with regard to the obtaining instruments its signatories are obliged to implement in their legislation. Moreover, the chapter also analyses how the Czech Republic has fulfilled its implementation obligations. The focus of the thesis represents the analysis of the national legislation, discussing the individual procedural instruments used by law enforcement agencies and their pitfalls. In particular, the thesis emphasises the description of the identification of operational and location data, especially considering the topic of data retention and the issuance of orders for the identification of operational and location data in the...
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Analysis of the Impact of Technological Processes on the Properties of the Functional Areas of Bearings
Fišerová, Zuzana ; Čep, Robert (referee) ; Sadílek, Marek (referee) ; Kouřil, Karel (referee) ; Chladil, Josef (advisor)
The dissertation is focused on the bearing production technology issues. The aim of the thesis is to investigate and evaluate the influence of the technological processes on properties of the functional surfaces of an outer bearing ring. The development, rolling, grinding and turning have been selected as basic technological processes. The subject of the surface integrity research on test samples is the measurement and analysis of the quality of the machined surfaces and residual stresses in the surface layers of the bearing rings. The comparison is made in relation to the previous operations - rolling, turning and grinding.
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Employee's Health Incapacity to Work and Legal Nature of Medical Certificates
Sadílek, Martin ; Tomšej, Jakub (advisor) ; Morávek, Jakub (referee)
Employee's Health Incapacity to Work and Legal Nature of Medical Certificates Abstract This thesis is named "Employee's Health Incapacity to Work and Legal Nature of Medical Certificates." Employee's health incapacity to work has significant consequences for the master-servant relationship and these consequences are visible in the areas of creation, modification and termination of the master-servant relationship. This incapacity can also have various causes and every cause can have different labour-law consequences. Employee's health incapacity can, however, be declared only by a medical certificate or by a decision of an administrative authority, which reviews the medical certificate. Only on the basis of the above mentioned medical certificate or decision of an administrative authority which reviews the medical certificate are the employer and employee entitled to actions predicted by legislation. In recent years, there has been a change in how medical certificates are viewed upon in terms of their legal nature. Today, medical certificates are not considered as legally binding, but only as a non-binding opinion. The objective of this thesis is to describe and analyse the legal regulation of medical certificates, with extra attention being paid to the legal nature of those certificates. The goal is also to...
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