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Testing of Vehicle Suspension Components
Šidla, František ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This bachelor thesis deals with issues related to testing car chassis components during development. Automobile transport is the most common type of long-distance transport. That's why vehicles are constantly evolving to provide the best possible performance. Increasing demands on consumers are being placed on vehicles because of the introduction of modern technologies. New technologies and concepts need to be thoroughly tested that they can be properly integrated into existing models. Test devices for determining the characteristics of the chassis are generally described here using specific examples of individual machines. Subsequently, the work clarifies the testing of the service life of individual parts of the chassis. The last part is devoted to the conceptual design of a simplified hydraulic device for testing coil springs. From the calculated characteristics, a hydraulic actuator and pump are selected from the relevant catalogues. In conclusion, the importance of car testing in development is summarized, individual types of testing are described and the readiness of test devices for the future is indicated.
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Experimental investigation of the pumps for cryogenic proppellants of the rocket fuel systems
Šuráň, David ; Rudolf, Pavel (referee) ; Kozák, Jiří (advisor)
This bachelor’s thesis deals with the pumping of cryogenic substances. The main objective is a research of experimental investigation of rocket turbopumps. Specific experiments, their purposes, processes and final results including the detailed description of the test rigs are listed. Originally, the work was aimed to pumping of the liquid oxygen (LOX), but it turned out that liquid oxygen simulants are used extensively during the experimental testing. The essential conditions for comparing those substances are stated. Major references were obtained from the experimental investigation technical reports and scientific articles. The rest of the work describes basics of hydrodynamics, pumps and their parameters, cavitation, inducers, rocket combustion cycles and liquid propellants. Finally, author designed a test rig for cryogenic substances pumping.
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Laboratory simulator of radial journal bearing
Vincenc, Jan ; Čermák, Jan (referee) ; Šperka, Petr (advisor)
The master’s thesis deals with a design of a radial journal bearing simulator, which is ready to implement a transparent sapphire journal bearing to an optical observation of the oil film. The first part of this thesis contains a short review of a few currently used journal bearing test rigs. The next part of the work deals with a discussion of concept variants and a definition of important parameters. The last part contains a detailed description of the designed radial journal bearing simulator. Limitations of the designed simulator and recommendations for future improvements are also discussed. The result of the presented work is the designed journal bearing simulator which will allow observing of the oil film. The work also consists a complete design documentation.
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On-Road Damper Force Measurement
Hornák, Filip ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
The first part of the master's thesis deals with basic types and functions of dampers, together with a search of commonly used methods of damper force measurements. Consequently, a design of an on-road damper force measuring assembly is made and positioned onto a 3D model of a vehicle's damper. In the final part of the thesis there is made an evaluation of conditions of use of the measuring assembly together with its versatility.
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Design of a test rig for a wear test of inner ball joints
Blecha, Martin ; Pavlík, Jan (referee) ; Knoflíček, Radek (advisor)
This diploma thesis deals with the design of several variants of test rig for tests of axial ball joints of passenger cars. The individual design variants are evaluated based on the evaluation matrix and then the best option is selected. Selected proposal includes a complete design including 3D models and strength analyses that focus on the most stressed construction nodes. These design nodes are solved using the finite element method. Hydraulics and hydraulic elements are equipped by the existing equipment from a test lab. At the end of this thesis is solved risk analysis of the new construction and its economic evaluation.
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Automation of track for measurement of water valves characteristics
Lekeš, Pavel ; Havlíková, Marie (referee) ; Šedivá, Soňa (advisor)
My diploma thesis describes upgrade of flowbench serving as test rig for regulation valves characteristic measurement. At the beggining, there is an introduction to the water regulation valves theory followed by current machine condition description. Next chapter defines needed improvements and at the end follows proposition of improvements and necessary component definition and final realization. Final chapter summarizes complete project.
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Test Rig Design for Durability Testing of the Rubber Segments
Borek, Vojtěch ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
The aim of diploma thesis is construction design of test rig for durability testing of the rubber segments. The work contains a brief description of tested component, test rigs and individual parts of the testing system. Next chapter describes conception and construction solutions with justification of choice specific parts, supported by analysis of critical parts. Finally the overall construction design is evaluated and accompanied with a documentation of drawings, which is attached to the thesis.
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Rig for Testing Suspension Components
Nedoma, David ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
Development of car suspensions needs optimalisation of comfort, durability over external conditions, reduction of un-sprung mass, car handling. This requirements often need contradictory solutions and during solving it is necessary to take compromises. Verification of durability of car suspension is better while developing the whole car. Therefore, many solutions of car suspension test rigs are created. This thesis brings summary of existing solutions and their construction. This thesis brings its own solution of the suspended test equipment, strength calculations of main components. You can find here procedure of testing components on this test rig as well. Written ideas for future development of this rig are mentioned in last chapter
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Conceptual design of a polymeric gear tester in vacuum
Ptáček, Matyáš ; Šperka, Petr (referee) ; Černohlávek, Mikuláš (advisor)
The bachelor thesis deals with the conceptual design of a polymeric gear tester in vacuum. Using a test device, it is possible to test the coefficient of friction in gears. At the beginning of the work is described the issue of operating conditions of satellites in low orbit together with the effects that affect them. Subsequently, suitable polymeric materials are selected, and current publicly available test rigs are described. Based on the research, two conceptual designs are made, one of them is selected and described in detail at the end of the work.
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Automation of track for measurement of water valves characteristics
Lekeš, Pavel ; Havránek, Zdeněk (referee) ; Šedivá, Soňa (advisor)
My diploma thesis describes upgrade of flowbench serving as test rig for regulation valves characteristic measurement. At the beggining, there is an introduction to the water regulation valves theory followed by current machine condition description. Next chapter defines needed improvements and at the end follows proposition of improvements and necessary component definition and final realization. Final chapter summarizes complete project.
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