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Use of numerical simulation for reduction of scrap from Al alloys
Doležal, Petr ; Lána, Ivo (referee) ; Krutiš, Vladimír (advisor)
This thesis deals with the possibilities of current simulation software and their use in technical practice. The aim of the thesis is to describe the process of the simulation; summarise the required initial parameters of the cast in order to achieve a credible simulation, and to describe the possibilities of the use of simulation software in the area of casting defect prediction. This theoretical analysis is applied on a specific cast, which is subject to a simulation trying to find an ideal inflow system, as well as predicting the formation of possible defects. The accuracy of this simulation will be proved by analysing an actual cast product.
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Investment casting - defects list
Šmatelka, Jakub ; Staňková, Markéta (referee) ; Mikulka, Vít (advisor)
This bachelor thesis deals with defects which can occurred during investment casting process. In the first part, there is briefly described investment casting process in Alucast s.r.o. company. List of all defects occurring during manufacture is described in the second part. This catalog includes majority of defects from the cast proposal to finishing operations. There are also described causes, consequences and corrective actions.
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Welding Basic Course on 135 Technology
Dolejský, Tomáš ; Opletal, Jan (referee) ; Kubíček, Jaroslav (advisor)
TOMAS DOLEJSKÝ: Welding Basic Course on 135 Technology. The project developed within the framework of the bachelor's study of a branch Engineering technology presents a proposal for a theoretical and a practical parts of the welding basic course with a method 135 in accordance with the curriculum of Czech Welding Society-ANB. The latest norms or up to the present time still valid ones are presented in the project. A theoretical part contains a necessary minimum of requirements for participants of the welding basic course. In the chapter of a welding technology is presented a practical part of this welding process and important principles for a required quality of welded joints according to long-time experience. In a conclusion there is an interpretation of a norm ČSN 05 0705 according to what welding basic courses are realized and a welding process WPS is presented here and a proposal of examining tests for a passing an exam in a welding basic course.
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Drawing technology of non-rotary drawing parts
Vítek, Roman ; Šlais, Miroslav (referee) ; Císařová, Michaela (advisor)
The bachelor thesis written in the frame of studies branch 2301R016 is focused on theory of drawing technology of non-rotary drawing parts. The theme is elaborated on the base of literary sources starting with theory of drawing rotary drawing parts, through description of modern metods used in production itself. The work includes simulation of drawing non-rotary drawing parts, analysis of defects during drawing. There is also an overview of non-traditional drawing metods including essay dealing with various drawing materials such as stainless steel or titan.
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Diagnostic methods for the evaluation of the state of timber structures
Dvořáčková, Soňa ; Anton, Ondřej (referee) ; Heřmánková, Věra (advisor)
This Bachelor´s thesis is focused on diagnostics methods which are destructive, semidestructive and non-destructive. Thanks to these methods, we find out features and characteristics of the material. In the thesis, there is performed diagnostic measurement on a wooden beam and comparing of the results from the method of thorn resistance placement and the results from wood strength measured along the grain. At the end of the thesis there are mentioned statistics calculations.
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Finding and verifying postural defects at chosen schools in Havlíčkův Brod
KLATOVSKÁ, Gabriela
Considering that I used to study at a Secondary Medical school, this area concerning parts of the human body is not really unfamiliar, that is why I chose it. Backbone (spinal) defects are as old as humanity in itself. Seperated into defects from birth and those aquired later on in life.Originally it was more often a birth defect. Individuals with bigger handicaps were excluded from society and succumbed to a miserable existence in the end. With the development of science and National Health services there are fewer people with crooked bones; a consequence of a vitamin D defiency. These defects not only concern humans, but animals too. They discoverd human diseases (where backbone defects belong) also went along with animals. Breeding of animals, to increase (for example dogs and cats) better qualities, usually turns in to degenerative changes of backbone and hips. What is missing is called "healthy blood". Now there are more acquired defects which are a result non healthy living (bad eating, eating too much) and not enough exercise. With developing computer technology, sitting for a long time causes back problems. Because adults work too hard and are very busy,they do not have time for physical activities, which help the body relax and support the back, In my work I am devising tests that strengthen the body and help you can recognize different kinds of defects; resulting in rehabilitation through exercise. This helps handicaped people deal with the problem and in some cases elimates the problem completely.
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