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Viscometer adjustment for materials of higher viscosity
Laryš, Šimon ; Jankovský, Jaroslav (referee) ; Otáhal, Alexandr (advisor)
The aim of this bachelor‘s thesis is to rebuild and verify the functionality of an old SHEEN CP1 viscometer for measuring soldering and thick-film pastes according to the design from the semester project. The theoretical part presents the basic viscosity calculations for newtonian and non-newtonian substances. The basic methods of viscosity measurement for different types of substances are also explained here. The greatest emphasis is placed on devices that can measure thixotropic substances. The practical part presents a design for a method which reduces the speed of the viscometer and a design for the interconnection of individual components from the semester project and its assembly. Following part contains description of the modules and sensors used and the program part with libraries where functions for individual peripherals were created and explained. The connection of individual components is also explained here. Finally, the functionality of the modified viscometer is verified by measuring the soldering and thick-film paste.
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Trends in Solder Paste Area and Nanoparticles Influence
Dosedla, Milan ; Špinka, Jiří (referee) ; Starý, Jiří (advisor)
This thesis deals with novel trends in solder paste technology. It focuses on nanoparticle applications used as a tool for improving a state of the art lead free solder alloys. The recently published results about the impact of different types of nanoparticles on properties of newly-emerged nanocomposite solders are discussed and summarized in the thesis. Preparation, practical application and testing of new solder paste based on low temperature SnBi alloy with an admixture of titanium dioxide are also discussed. Finally, properties of solder joints using these solder pastes are investigated and the results are evaluated.
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Viscometer adjustment for materials of higher viscosity
Laryš, Šimon ; Jankovský, Jaroslav (referee) ; Otáhal, Alexandr (advisor)
The aim of this bachelor‘s thesis is to rebuild and verify the functionality of an old SHEEN CP1 viscometer for measuring soldering and thick-film pastes according to the design from the semester project. The theoretical part presents the basic viscosity calculations for newtonian and non-newtonian substances. The basic methods of viscosity measurement for different types of substances are also explained here. The greatest emphasis is placed on devices that can measure thixotropic substances. The practical part presents a design for a method which reduces the speed of the viscometer and a design for the interconnection of individual components from the semester project and its assembly. Following part contains description of the modules and sensors used and the program part with libraries where functions for individual peripherals were created and explained. The connection of individual components is also explained here. Finally, the functionality of the modified viscometer is verified by measuring the soldering and thick-film paste.
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Trends in Solder Paste Area and Nanoparticles Influence
Dosedla, Milan ; Špinka, Jiří (referee) ; Starý, Jiří (advisor)
This thesis deals with novel trends in solder paste technology. It focuses on nanoparticle applications used as a tool for improving a state of the art lead free solder alloys. The recently published results about the impact of different types of nanoparticles on properties of newly-emerged nanocomposite solders are discussed and summarized in the thesis. Preparation, practical application and testing of new solder paste based on low temperature SnBi alloy with an admixture of titanium dioxide are also discussed. Finally, properties of solder joints using these solder pastes are investigated and the results are evaluated.
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