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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Design and implementation of device for dynamic loading of laboratory model of rail track based on pre-stressed stiffness
 Turza, Šimon ; Lošák, Petr (referee) ; Kšica, Filip (advisor)
This bachelor thesis deals with the design, implementation, and validation of a loading fixture based on the principle of pre-stressed stiffness for a railway track model. The literature review summarizes the available methods for dynamic modeling of railway tracks and describes the laboratory model used. Furthermore, the thesis addresses the design and implementation of the fixture, which was developed based on the requirements arising from the shortcomings of previous solutions. The final part focuses on the experimental validation of the fixture's functionality and its comparison with previous solutions.
Detailed record
Vibration analysis of single-engine aircraft
 Loucký, Tomáš ; Hadaš, Zdeněk (referee) ; Kšica, Filip (advisor)
This bachelor’s thesis deals with the measurement and processing of data from a small single-engine aircraft, followed by analysis and evaluation regarding the overall structural load of the aircraft. The first part provides basic information about vibrations in general and their impact on an aircraft. It also focuses on methods and devices used for vibration measurement. The subsequent chapter describes the procedures of data processing in time, frequency, and time-frequency domains, as well as providing basics about statistical correlation and hypothesis testing. The next section of this thesis will work with the collected data from a test flight, utilizing the previously acquired knowledge to adjust and process all available signals. The goal will be to identify statistical correlations between sensor responses and aircraft maneuvers. Finally, conclusions will be drawn from the results regarding the applicability of sensors for determining the structural load during flight.
Detailed record

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