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Poka Yoke system for production oversee of CVS
Brňák, Jan ; Havlíková, Marie (referee) ; Štohl, Radek (advisor)
This document discusses the various types of production which have been developed to reduce the quota complaint. In particular, it focuses on the method POKA-YOKE and FMEA. Theoretical part analyses individual methods and their use in production. All mentioned methods have been developed and applied to the observation of the production line of high body CVS in the company IMI International, s.r.o. The bachelor work includes all errors that occur during manufacture, then discusses the introduction of measures that lead to the elimination of defects created. The proposed measures are approved and applied in the company IMI International s.r.o.
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Comparison of solders for power modules
Spaček, Marek ; Boušek, Jaroslav (referee) ; Hejátková, Edita (advisor)
Táto práca podáva náhľad na výkonové polovodičové moduly, technológie v nich požívané a niektoré procesy používané na ich výrobu. Popisuje aj niektoré kvalitatívne kritériá pre spájkovaný spoj medzi DBC substrátom modulu a jeho základovou doskou a metódy používané na ich inšpekciu. Na koniec porovnáva vlastnosti 6-zložkovej vysoko spoľahlivostnej spájky 90iSC vyvinutej firmou Henkel so štandardnou spájkou požívanou na výrobu modulov vo firme SEMIKRON pri použitím rôznych spájkovacích programov, použitím röntgenovej inšpekcie, SAM a metalurgických rezov.
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Power supply for space application
Hrubý, Lukáš ; Bohrn, Marek (referee) ; Pavlík, Michal (advisor)
The following work deals with a design of switched mode power supply. In this essay, there is detailed description of non-isolated and isolated topologies of SMPS, used in industry. Next, there are calculations for design and analysis which are needed for space design. There will also be selected devices, which could be used in final device. Based on experience and ECSS requirements, there will be chosen parameters of SMPS, which could be then used as a module for future space design. Chosen topology of SMPS will be created as engineering model assembled with commercial components. One part of this work is dedicated to design and realization of planar transformer and coupled inductor.
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Flying drones rescue systems
Hájek, Tomáš ; Janhuba, Luboš (referee) ; Pejchar, Jan (advisor)
This paper addresses the issue of security and integration of UAVs in air traffic operations and analyses possible risks. This work defines methodology to demonstrate airworthiness of the parachute recovery system under extreme climatic conditions. The first part of the methodology deals with the compliance performance requirements in external environment and the second part verifies performance parachute canopy. Methodology developed herein is subsequently verified by practical tests on parachute recovery system Galaxy GBS 10.
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Thermomechanical Stress of Lead Free Solder Joint
Libich, Jiří ; Šandera, Josef (referee) ; Starý, Jiří (advisor)
This diploma thesis deals with the reliability of lead-free solder joints at a different interconnection structures. The first goal is to design the test cases shape BGA (FC) for testing the strength of lead-free solder joints at shear test in link with design of measuring method to detection shear strength during isothermal aging of lead-free solder joints. Following this shear stressing is investigating influence material and process compatibility, ie. pads finishing, material of solder and integrate of temperature (this mean thermal energy supplied during soldering) to lead-free solder joint strength.
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Solder Joint Conductivity - Influence of Solder Volume and Isothermal Aging
Mach, Ladislav ; Schnederle, Petr (referee) ; Starý, Jiří (advisor)
The master thesis analyses electrical conductivity of lead-free solder joints. The test method design for monitoring the electrical conductivity of the soldered joint is described in the practical part. Simulated BGA package with four pin (BGA4) is used for experiments. Tested PCBs are subjected to isothermal aging and current load. During isothermal aging is measured electrical conductivity and optical microscope is used for intermetallic layer (IMC) growth observation. Two types of surface finish (OSP and ENIG) are used for tests and three diameters of solder terminal balls (solder alloy SAC405). The influence of the ratio area connection / solder volume (ratio S / V) on lead-free solder joints conductivity was evaluated.
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Methods for reliability analysis
Ptáčková, Ludmila ; Krbalová, Maria (referee) ; Řezníčková, Hana (advisor)
This bachelor thesis deals with methods of reliability analysis. The theoretical part of the thesis describes the most frequently used methods of reliability analysis. Subsequently, one of these methods was selected, namely the FMEA method, and applied in practice. As part of the practical part of the work, SCHOTT CR, s.r.o. In Lanskroun, PFMEA has been updated to the drilling process for a specific product. At the end of the thesis is mentioned the possibility of using APIS IQ program for creation of PFMEA writing.
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Uncertainty Analysis of Hydrological and Operating Parameters on Water Management Analysis of Reservoir Storage Capacity
Paseka, Stanislav ; Menšík, Pavel (referee) ; Marton, Daniel (advisor)
The aim of the thesis is to introduce the concept of Monte Carlo method for incorporating the uncertainties into the all hydrological and operational data inputs, which are needed to design and operation of large open water reservoir. Incorporating uncertainties into data inputs during calculation of reservoir storage capacity, then the consequent active conservation storage capacity is loaded by uncertainties. In the same way the values of outflow water from reservoir and hydrological reliability are affected by these uncertainties as well. For these kind of calculations the reservoir simulation model has been used, which simulate behavior operation of reservoir and is able to evaluate the results of simulations and help to reduction risk of storage capacity failure, respectively reduction of water shortages during reservoirs operation during low water and dry periods.
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Aircraft Maintenance Control and Operational Defect Troubleshooting
Novotný, Tomáš ; Finda, Jindřich (referee) ; Zdich, Jiří (advisor)
This diploma thesis cover with the management of aircraft maintenance, one specific airline which operating with aircraft SAAB 340. Especially I dedicated to the maintenance and troubleshooting on the aircraft found during the operation. Contents diploma thesis consists of three parts. The first part describes the basic elements and concepts in the field of aircraft maintenance and related regulations. The next part describes the company which operating the aircraft for commercial transport, approach to the maintenance of its own fleet, together with the methodology for recording faults or malfunctions found during the operation. In the last part, I am cover with assessment of the system recording and troubleshooting.
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