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1	Návrh zařízení pro měření smáčivosti povrchů / Design equipment for measurement the surface wettability Šubrt, Kamil January 2013 (has links) This paper describes the design of equipment for measuring the wettability of surfaces. Surface wettability is determined by analyzing the profile drops, in an image taken with a digital camera. After the equipment is required to automatically find and focus the analyzed drops, taking the image, measuring wettability and save the image analysis, including measurement results to a file for subsequent offline analysis and archiving. The proposed facility is designed as a three-axis manipulator. For the driving the axes are chosen stepper motors. A key factor in achieving the highest possible speed measurement is very smooth movement of the manipulator, which is achieved by controlling of motors in microstepping mode with very high resolution. Software entire system is designed in the NI LabVIEW development environment for image processing was used module NI Vision.
2	Ofsetinių spausdinimo formų paviršinių savybių tyrimas / Investigation of surface charakteristics of offset printing plates Šimėnas, Mindaugas 16 June 2006 (has links) It was investigated characteristics of surfaces of offset printing plates. A method of measurement of wetting angle was improved and there were investigated the wetting characteristics of hydrophilic surfaces of offset printing plates and their dependence on dampening solution and on printed run. Experimentally investigated 16 offset printing plates. Wetting angle increases with the run. Surface roughness was investigated using profilograph. Changes of surface roughness during printing were determined and it was found that during printing quantity of bigger over 1 µm irregularities increases. Mechanical Engineering Profilograph Paviršiaus nelygumai Hidrofilinis paviršius Surface roughness Vilgymo skystis Offset printing plate Profilografas wetting angle Hydrophilic surfaces Spausdinimo forma Dampening solution Vilgymo kampas
3	Sledování rychlosti roztékání pájky po kovovém povrchu / Monitoring of Solder Spreading Velocity on Metal Surface Růžička, Miroslav January 2012 (has links) This work deals with flushing monitoring of spreading velocity on solder finishes Niau, OSP, Sn deposited on copper plated base material FR4 using digital cameras. After the reflow process is measured by length of spreading solder and size of wetting angle. It evaluates and compares the time dependence of velocity of spreading solder, length of solder spreading and wetting angle for NiAu, OSP, Sn finishes at different temperatures reflow and surface treatment.
4	Smáčení a roztékání roztavené pájky po kovovém povrchu / Wetting and Spreading of Liquid Solder on Metal Surface Kučera, Lukáš January 2010 (has links) This work deals with the metal surface wetting problems of molten lead-free solder and monitoring of ongoing processes at the inter-phase interface using the method of evaluation of the height of the molten solder deducted from the video sequences. The work is aimed at evaluating the metal surface wettability, wetting angle determined. Wettability of the metal surface is compared for different types of surface treatments and for different ages of the measured samples. Measurement is performed at the improved workplace, is used to evaluate the newly derived formula for calculating the wetting angle and created program for automatic evaluation of Picture is used to.
5	Vliv smáčecích charakteristik na spolehlivost pájeného spoje / Solder Joint Reliability and Wetting Characteristics Influence Labaj, Radek January 2010 (has links) This thesis deals with the methodology of testing the wetting characteristics for different material and process effects in the double-plated base material. Testing is performed by wetting balance method. There is designed procedure to calculate the angles on each side of the non-homogeneous material. The Design of Experiments method is used to interpret the results, by using this method are also interpreted electrical and mechanical properties of solder joints. The correlation with wetting characteristics is discussed.
6	Влияние способа чистки оптических деталей на состояние полированных поверхностей : магистерская диссертация / Influence of the method of cleaning optical parts on the condition of polished surfaces Кибалина, А. А., Kibalina, A. A. January 2021 (has links) Рассмотрены существующие методы проведения операции чистки оптических поверхностей с целью удаления с нее всех загрязнений и создание необходимого состояния поверхности. Приведены результаты измерения краевого угла смачивания, который позволяет проанализировать, какие свойства обретает поверхность после чистки. Описан комплекс измерительного оборудования для определения угла смачивания поверхности жидкостью. / The existing methods of carrying out the operation of cleaning optical surfaces in order to remove all contaminants from it and create the required surface condition are considered. The results of measuring the contact angle of wetting are given, which makes it possible to analyze what properties the surface acquires after cleaning. A set of measuring equipment for determining the angle of surface wetting with a liquid is described. НАЛЕТ ОПЕРАЦИЯ ЧИСТКИ УГОЛ СМАЧИВАНИЯ MASTER'S THESIS PLAQUE CLEANING OPERATION OPTICAL SURFACE SURFACE PREPARATION WASHING OF OPTICAL PARTS WETTABILITY OF THE SURFACE WITH LIQUID WETTING ANGLE

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