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Diagnostic method of solar cells operating at very low temperatures
Bartoň, Jiří ; Stojan, Radek (referee) ; Veselý, Aleš (advisor)
This work deals with the modern diagnostic methods of defects detection of solar cells. Defects are detected by electroluminescence and photoluminescence methods. The main focus of this work is an innovation workplace for measuring solar cell defects at very low temperatures using photoluminescence. Liquid nitrogen is used to cooling solar cells. By using low temperatures can be detection methods to obtain more objektive results of diagnostic defects.
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Inspection of the implementation of reinforced concrete structures
Juráň, David ; Vymazal, Tomáš (referee) ; Cikrle, Petr (advisor)
This diploma thesis deals with the control of the implementation of reinforced concrete structures. The theoretical part deals with the issues of this theme. There are presented individual work processes of the implementation of reinforced concrete structures, accesses of valid standards, used diagnostic methods and also inspection and test plans for cast-in-place reinforced concrete structure. The practical part is divided into three chapters. The first chapter applies with the most frequent defects in new reinforced concrete structures and two remaining chapters with the inspection of newly built structures for which arose misgivings about the quality of execution.
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Induction Motor Diagnostics With Regard To Maintenance And Reliability
Bulušek, Petr ; Huzlík, Rostislav (referee) ; Veselka, František (advisor)
The thesis Diagnostic of induction motor with regard to its maintenance and reliability aims to be a theoretical preparation and application of online diagnostics. It is trying to map correlations between electromechanical system failures driven by induction motor and output information of the diagnostic method. It mainly focuses on spectrum analysis of stator current which carries information on the induction motor status in the form of characteristic signatures in the spectrum (Motor Current Signature Analysis). The theoretical part deals with the concept of diagnostics and mainly with the operational diagnostics, it classifies and characterises types of induction motor failure and it accordingly processes diagnostic methods. This all is done with regard to the application of the maintenance and inspection of machines in a manufacturing company. The practical part develops methodology and measurement procedure. Several measurements demonstrate, validate and apply the MCSA method. It simulates abnormalities and searches for their correlations in the spectrum stream. First, a motor powered from electric distribution network is measured and then the MCSA method is applied to motors powered from frequency converters.
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Structure diagnostics in relation to the current condition assessment
Pospíšil, Ondřej ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
Bachelor’s thesis is concerned with the construction diagnosis methods used for assessing existing reinforced concrete constructions. In the practical part of the thesis, the methods mentioned are apllied for a technical reconnaisance of the facility in the sports and recreational compound Kraví Hora in Brno, which is supposed to be reconstructed early. The diagnosis process results are interpreted in the summary of the thesis.
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Evaluation of a historically valuable reinforced concrete structure
Uchytilová, Jitka ; Láník, Jaromír (referee) ; Cikrle, Petr (advisor)
In the theoretical chapters of the bachelor thesis is summary of the historical development of reinforced concrete construction, including individual components of concrete. Furthermore, the issue of the evaluation of historically valuable structures and used diagnostic methods is processed. In the practical chapter there is a diagnostic survey of the selected historical structure including the conceptual design of rescue.
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Bio-electromagnetic compatibility
Matulík, Martin ; Rozsívalová, Zdenka (referee) ; Matulík, Radomír (advisor)
Following work deals with problems of effects of electromagnetic radiation on living organisms. It goes into interactions of electromagnetic radiation with environment, effects on living organisms, physical units of biological tissues and sorting types of electromagnetic radiation to determine means of protection against adverse health reactions. It enlighten means of establishing sanitary restrictions, differences in legal aspects at Czech republic and worldwide, possible medical utilization, even principles of selected diagnostic and therapeutic techniques. It looks into shielding effects of common materials, ordinarily used for protection against ionizing radiation via findings of practical measurements. Series of radiofrequency measurements has been done with precise spectrum analyzers, which should reveal some basic problems of frequency bands, ordinarily used in current period.
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Technical conditions of the existing object
Voltr, Vojtěch ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
This bachelor thesis deals with construction and technical research and design of diagnostic methods. In the practical part are this diagnostic methods applicated to preliminary and detail research of existing object of old restaurant in village Velichovky. Output of this paper is a list of the necessarily works to get this building in use.
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Diagnostic methods for the evaluation of the state of a timber structure
Rusz, David ; Komárková, Tereza (referee) ; Heřmánková, Věra (advisor)
This thesis is focused on implementation and subsequent evaluation of selected diagnostic methods for a survey of timber structure. The first part of thesis describes wood structure and characteristics, the next part is about diagnostic methods followed by diagnostics of specific element of timber structures. The main aim of the thesis is to compare nondestructive, minor destructive and destructive methods for timber structures and their application in the practice.
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