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Analysis of Smart Materials
Rašner, Martin ; Lošák, Petr (referee) ; Hadaš, Zdeněk (advisor)
The bachelor's thesis "Smart Materials Analysis" deals with the description of intelligent materials in the way of usability in technical practice. At first, the research of smart materials is carried out, which is further elaborated on a detailed description of shape memory materials. In order to investigate the functionality of the material and the description of its behaviour in terms of non-linear oscillation, a simplified model is proposed. The practical part deals with the application of passive damping of Nitinol. The solution is accomplished by modelling program MATLAB / Simulink.
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Development of PVDF nanofibers sensor
Klásek, Matyáš ; Tofel, Pavel (referee) ; Hadaš, Zdeněk (advisor)
This diploma thesis deals with the feasibility of using PVDF nanofibers as an active sensor layer generating electrical signal. PVDF and related electromechanical effects are described. A research study is conducted regarding existing PVDF nanofiber applications and based on it, an event sensor design utilizing triboelectric effect and electrostatic induction is proposed. The electrical response of the layers is experimentally investigated and a pulse detection algorithm is conceived and implemented. Finally, a way of integrating the sensor into a rail track is proposed.
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Smart materials
Valenová, Ludmila ; Němec, Karel (referee) ; Molliková, Eva (advisor)
The bachelor thesis deals with smart materials. In summary, it describes the general classification of smart materials into individual groups. Describing the properties of individual groups and using these materials in practice. In more detail, there are described groups of shape memory materials, color changing materials under the external stimulus, light emitting materials and materials based on piezoelectric effect.
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Aircraft lifting surface morphing
Přikrylová, Helena ; Juračka, Jaroslav (referee) ; Dubnický, Lukáš (advisor)
This bachelor’s thesis deals with the introduction of morphing wing technology, more specifically camber morphing. It describes the specific requirements in terms of different construction parts by presenting various morphing concepts. The first part is dedicated to brief description of the motivation for wing morphing, that is followed by introducing different morphing concepts that use kinematic or compliant mechanisms in order to achieve shape changes of the airfoil. The need of anisotropic skin and several ways of achieving the anisotropic behaviour are described as well as the pros and cons of the use of conventional actuators and innovative smart materials. The last chapters deal with the validation of morphing wing benefits and the demonstrations of the feasibility of the morphing concepts.
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Smart Materials for Medical Applications
Kaplán, Martin ; Hájek, Petr (referee) ; Florian, Zdeněk (advisor)
This thesis describes materials which react to external stimuli. These materials are know as Smart materials. The thesis provides an overview of these materials and their use in the field of medicine. A lot of attentions is paid to Nitinol as the most significant representative of Smart materials. The thesis brings a simulation of using shape memory effect of Nitinol staple for bone fracture fixation. This simulation use the method of finite elements for solving and it is done in ANSYS modeling software. The simulation has only demonstrational purpose.
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Smart materials in aviation
Riger, Rostislav ; Jetela, Václav (referee) ; Klement, Josef (advisor)
This bachelor thesis deals with smart materials and their applications in aviation. The theoretical part explains what we mean by the term smart materials and what we want to achieve with their use. Further, these materials are sorted according to the principle of their function and described. The practical part is focused on specific applications of smart materials in aviation. Sometimes these are only theoretical applications that have not yet been used.
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Smart materials application in hydraulic systems
Montag, Jakub ; Klapka, Milan (referee) ; Kubík, Michal (advisor)
This thesis deals with the application of smart materials in hydraulic systems. In the first part, the hydraulic systems themselves and smart materials are described. This is followed by specific smart materials, where the principle of function, in which fields they can be found, applications in hydraulic systems and their advantages and disadvantages are described. Finally, the materials are summarised and compared with each other.
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Aircraft lifting surface morphing
Přikrylová, Helena ; Juračka, Jaroslav (referee) ; Dubnický, Lukáš (advisor)
This bachelor’s thesis deals with the introduction of morphing wing technology, more specifically camber morphing. It describes the specific requirements in terms of different construction parts by presenting various morphing concepts. The first part is dedicated to brief description of the motivation for wing morphing, that is followed by introducing different morphing concepts that use kinematic or compliant mechanisms in order to achieve shape changes of the airfoil. The need of anisotropic skin and several ways of achieving the anisotropic behaviour are described as well as the pros and cons of the use of conventional actuators and innovative smart materials. The last chapters deal with the validation of morphing wing benefits and the demonstrations of the feasibility of the morphing concepts.
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Development of PVDF nanofibers sensor
Klásek, Matyáš ; Tofel, Pavel (referee) ; Hadaš, Zdeněk (advisor)
This diploma thesis deals with the feasibility of using PVDF nanofibers as an active sensor layer generating electrical signal. PVDF and related electromechanical effects are described. A research study is conducted regarding existing PVDF nanofiber applications and based on it, an event sensor design utilizing triboelectric effect and electrostatic induction is proposed. The electrical response of the layers is experimentally investigated and a pulse detection algorithm is conceived and implemented. Finally, a way of integrating the sensor into a rail track is proposed.
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