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Optimization of foundry technology for the production of piston from Al alloy
Poláček, Adam ; Pernica, Vítězslav (referee) ; Krutiš, Vladimír (advisor)
The aim of work is to optimize the casting solidification technology to reduce or completely eliminate defects. The literary part of the work deals with materials, production technology and defects in the pistons of internal combustion engines and compressors. In the design part of the work, an analysis of the occurring defects is performed. X-ray examination and the cut of the piston are conducted to investigate the causes of their formation. Subsequently, the simulation of the current production technology is carried out and technological modifications to the cooling process are proposed. These modifications are verified through simulation and in the conclusion are compared in terms of their effectiveness in reducing the occurrence of defects.
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Robotic welding case of linear fluid motor
Střechovský, Jan ; Kubíček, Jaroslav (referee) ; Sigmund, Marian (advisor)
The work deals with the feasibility study of robotic welding of a linear actuator cover. The first part includes a literature review focusing on the specifications and impact of individual welding process components on the appearance and properties of the weld. Some basic calculations necessary for the proper progress of the experiment are also included. The experimental part of the work focuses on finding suitable welding parameters and subsequent evaluation of the welded samples in terms of resulting defects. The following section compares the efficiency of manual and robotic welding. The conclusion of the work summarizes the achieved results and the decision on the feasibility of robotic welding for the given joint.
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Harmonized FMEA analysis
Riabov, Mikhail ; Szendiuch, Ivan (referee) ; Novotný, Radovan (advisor)
The target of the diploma thesis on „Harmonized FMEA analysis“ is to familiarize with principles of quality planning and studying the theory of existing APQP tools. Another goal is to learn the basics of the new manual of harmonized FMEA analysis and discover some available SW tools for project support. This diploma thesis will be focused mainly on DFMEA analysis of traction assembly and the concept of changing to new harmonized version from VDA/AIAG will be explained. This concept meets the requirements for clear and comprehensible output required by the manufacturer, supplier, and customer. The diploma thesis is elaborated as a detailed clear guide for easier processing of FMEA according to the new manual.
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Manufacture of massive castings and their defects
Doležal, Petr ; Martínek, Ludvík (referee) ; Záděra, Antonín (advisor)
Object of this master’s thesis is accomplished analyze the range of foundry of steel ŽĎAS a.s., Zdar nad Sazavou and make the type massive steel castings and analysis of existing technology foundry and metallurgical defect. The beginning of this master’s thesis is dedicated to the manufacturing of steel foundries range ŽĎAS a.s., Zdar nad Sazavou. The following section is devoted to manufacturing technologies for the production of massive steel castings. In the final part of this thesis are described metallurgical and foundry defects of the typical castings of steel foundry and proposals to eliminate these undesirable defects. End thesis includes a summary of the results and trends in the development of research in the production of massive steel casting.
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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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Reduction in House Prices due to Humidity
Ocásek, Petr ; Šmahel, Milan (referee) ; Weigel, Lubomír (advisor)
Diploma work "Problems of house price reduction due to defects manifested with damp" deals with the issue of property valuation and subsequent sale of the defect. The first chapter describes valuation and other important factors relating to the Act valuation. The second chapter deals with the necessary documentation for property valuation and basic terminology. The third section deals with defects that could occur in the residential building as well as their possible correction. Another part of this work is focused on the actual valuation of the object to a defect with property damage and the last chapter deals with the actual real estate market and the subsequent sale of such property with the defect. The attachments of the case study is then focused on the valuation of the house and without defects and possible solutions and proposed procedures for sale.
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Economic characteristics of the life cycle of building
Aigel, Petr ; Tichá, Alena (advisor)
Economic characteristics of building in the life cycle of the building work is a very broad topic. Captures economic part and associated technical part idem. Also, the life cycle of building work is very broad, a great many aspects and bearings enters into and influences the work. Excepting costs and prices of acquisition and maintenance of the works is necessary to observe quality of work performing. Both the materials used part and in terms of quality of each facture. This affects the amount of costs that may arise on the part of such unnecessary and degrading work as an entirety. This work attempts to describe all these aspects and influences, classify and appropriately use to monitoring of the works. All findings are tested on the building work - family house. The cornerstone is to find a suitable way of sorting accompanying work throughout its life cycle, allowing us to track costs and prices incurred on it. The conclusion consists answering questions and hypothesis exposed in the work.
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Passportisation of the Structural and Technical Condition of a House in Vyskov
Karásek, Jakub ; Doležalová, Monika (referee) ; Kosová, Jaroslava (advisor)
In this thesis I deal with the passportization of the building-technical condition of the family house in Vyškov, the creation of its new project documentation and the proposal of repairs including appraisal cost. In the theoretical part I describe possible faults and defects of buildings, also their lifetime and the possibilities of finding their construction-technical condition. I also discuss the theory and usefulness of pasportizations. In the practical part, I evaluate the construction and technical condition of the selected house and make a finding of faults and defects of the structures, including the proposal for their repair and the appraisal cost with the item budget.
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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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Survey and Diagnostics of Building Construction
Haloun, Jan ; Cikrle, Petr (referee) ; Anton, Ondřej (advisor)
The topic of the first part of this bachelor thesis covers the methods of diagnostics of reinforced concrete constructions and their practical application. In the theoretical part are described the methods currently used with diagnostics of reinforced concrete constructions with focus on methods used in practical part. The practical part covers the survey of reinforced concrete constructions and its evaluation. The main objects of the practical part were the detection of the strength class of concrete and real reinforcement of certain elements.
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