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Design of a test rig for stress visualisation using photoelasticimetry
Doležel, Miroslav ; Rebenda, David (referee) ; Michalec, Michal (advisor)
The purpose of this work is to construct a specific loading device for the observation of moving samples in the existing polariscope. The experimental method of photoelasticity is often used to observe stationary samples, but the observation of moving samples is less common. However, the time-varying development of the stress profile is very important for understanding of the stress cycles in the machine components. The theoretical part contains a basic information about the method of photoelasticity, its advantages and limitations and the possibility of its use. Then the dynamically stressed machine elements are mentioned, from which the gear is selected as a preferable element for observation in the polariscope. Furthermore, attention is focused on materials and techniques of sample production. The determination of the required load of the gear sample is based on these findings. The most suitable design of the loading device capable of inducing specified stress in the samples is proposed and the critical nodes of the structure are supported by the strength calculations. This design offers variability for clamping different sample sizes and can thus be used to investigate stress in other gear configurations as well.
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The effect of hospitalization and morning patient community with basic mindfulness practice on emotional experiencing and occurrence of emotional regulation strategies
Kubrický, Richard ; Světlák, Miroslav (advisor) ; Michalec, Jiří (referee)
The aim of this thesis was to theoretically describe and empirically test the relations between different types of emotion-regulation strategies (according to the Intelligence And Development Scales, IDS), the Five Facet Mindfulness Questionnaire (FFMQ), the Emotional Experiencing Questionnaire as measured by the DEP36 and The Difficulties in Emotion Regulation Scale Short Form (DERS-SF). In addition, the aim was to examine possible changes in the amount of emotion regulation strategies and the trend in emotional experiencing during hospitalization with a mindfulness-focused community. The final aim was to empirically test the immediate effect of a given community on current emotional state. This is a mixed-methods research design. The qualitative part of the data was processed using deductive content analysis to quantify emotion regulation strategies. The IDS coding scheme was used for quantification. Quantitative data analysis was performed using correlation analysis, goodness- of-fit test, and growth curve analysis. Correlation analysis revealed several small to moderate relationships across emotion regulation strategies (ERS). Adaptive ERS showed positive relationships with positive emotional experiencing, maladaptive and other ERS showed positive relationships with difficulties in emotion...
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Design of a test rig for stress visualisation using photoelasticimetry
Doležel, Miroslav ; Rebenda, David (referee) ; Michalec, Michal (advisor)
The purpose of this work is to construct a specific loading device for the observation of moving samples in the existing polariscope. The experimental method of photoelasticity is often used to observe stationary samples, but the observation of moving samples is less common. However, the time-varying development of the stress profile is very important for understanding of the stress cycles in the machine components. The theoretical part contains a basic information about the method of photoelasticity, its advantages and limitations and the possibility of its use. Then the dynamically stressed machine elements are mentioned, from which the gear is selected as a preferable element for observation in the polariscope. Furthermore, attention is focused on materials and techniques of sample production. The determination of the required load of the gear sample is based on these findings. The most suitable design of the loading device capable of inducing specified stress in the samples is proposed and the critical nodes of the structure are supported by the strength calculations. This design offers variability for clamping different sample sizes and can thus be used to investigate stress in other gear configurations as well.
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