|
|
Recent Trends in Research and Development of Thermal Barrier Coatings
Malík, Petr ; Slámečka, Karel (referee) ; Čelko, Ladislav (advisor)
Bachelor thesis focuses on recent trends in research and development of thermal barrier coatings which significantly contribute to increase in efficiency and service time of aircraft gas turbines. This work is a literal recherche on this topic which includes complete overwiev of surface treatment for high temperature applications, especially thermal barrier coatings. The most widely used technologies of coating processes and testing methods of thermal barrier coatings are included as well.
|
|
|
Transparent polycrystalline ceramics for ballistic and high-temperature applications
Malík, Petr ; Pouchlý, Václav (referee) ; Trunec, Martin (advisor)
Alumina based transparent ceramic bodies were prepared within this diploma thesis by the gel casting process followed by presintering to closed porosity stage with subsequent hot isostatic pressing. The problematic drying of large bodies was solved by means of careful temperature and relative humidity control and by osmotic drying. Almost perfectly dense ceramics were achieved thanks to colloidal processing of TM-DAR and TM-UF ceramic powders providing a final structure with grain size of 381 nm, resp. 302 nm. High real in-line transmission of 72,3 % was achieved at wavelength of 632,8 nm and thickness of 0,8 mm. Among mechanical properties high values of hardness HV10 = 22,5 GPa, fracture toughness KIC = 3,99 MPam0,5, Young’s modulus E = 400 GPa a bending strength o = 494 MPa were achieved.
|
|
|
Transparent polycrystalline ceramics for ballistic and high-temperature applications
Malík, Petr ; Pouchlý, Václav (referee) ; Trunec, Martin (advisor)
Alumina based transparent ceramic bodies were prepared within this diploma thesis by the gel casting process followed by presintering to closed porosity stage with subsequent hot isostatic pressing. The problematic drying of large bodies was solved by means of careful temperature and relative humidity control and by osmotic drying. Almost perfectly dense ceramics were achieved thanks to colloidal processing of TM-DAR and TM-UF ceramic powders providing a final structure with grain size of 381 nm, resp. 302 nm. High real in-line transmission of 72,3 % was achieved at wavelength of 632,8 nm and thickness of 0,8 mm. Among mechanical properties high values of hardness HV10 = 22,5 GPa, fracture toughness KIC = 3,99 MPam0,5, Young’s modulus E = 400 GPa a bending strength o = 494 MPa were achieved.
|
|
|
Recent Trends in Research and Development of Thermal Barrier Coatings
Malík, Petr ; Slámečka, Karel (referee) ; Čelko, Ladislav (advisor)
Bachelor thesis focuses on recent trends in research and development of thermal barrier coatings which significantly contribute to increase in efficiency and service time of aircraft gas turbines. This work is a literal recherche on this topic which includes complete overwiev of surface treatment for high temperature applications, especially thermal barrier coatings. The most widely used technologies of coating processes and testing methods of thermal barrier coatings are included as well.
|
|
|
Commercial use analysis of Wireless Mesh Network
Bystřická, Radka ; Basl, Josef (advisor) ; Malík, Petr (referee)
There is a constant development and continuous progress in the wireless technology field as it is in the all fields of information and communication technologies. One of the latest trends is the wireless mesh network. This type of network brings new features into the wireless field such as multihop, self-configuration, self-organization and self-healing. This enables the usage of wireless networks in new fields and industries or the upgrade of current implementations to meet new market demands. This thesis summarizes theoretical findings from this field from the users' point of view and functionality dimension. This is followed by a summary of possible applications, available technologies and known standards. The second half of the thesis consists of a requirement analysis of a chosen user group (the Fire Rescue Service of the Czech Republic) focusing on application of wireless mesh network for rescue operations. The analysis also includes test criteria and principles for test procedures for this application.
|
guest ::
RSS feed.