|
|
Testing of sliding coatings for space applications
Velička, Jan ; Pouzar, Josef (referee) ; Košťál, David (advisor)
This bachelor thesis deals with sliding coatings for use in space applications. In the experimental part, the number of cycles to wear for a molybdenum disulfide based coating was investigated. This coating was deposited on a beryllium copper CuBe substrate. The coating was tested for its possible application to bolt threads. The coefficient of friction of all samples was measured on a tribometer in an atmospheric environment. The specimens were loaded with a normal force of 35 N during the measurement. The number of cycles to wear was compared for specimens differing in coating time. The number of cycles was found to be similar for lower coating times. Then the number of cycles to wear started to increase with the coating time. From the findings, it can be said that increasing the coating time increases the coating life. Such a coating is suitable for the protection of bolts against galling.
|
|
|
Modification of the test rig for the testing the bearings for the space applications
Okál, Michal ; Křupka, Jiří (referee) ; Košťál, David (advisor)
This bachelor thesis deals with the design of a device, which allows exploration of rolling bearings properties in space conditions. The adjustment is necessary for testing of a new rolling bearing with different dimensions. Preload of the bearing must be centered and adapted for rapid heat exchange with the surroundings. The effort is made to use maximum number of existing components and torsion stiffness of the device. The thesis outputs are the accompanying report and the technical documentation allowing the production of new components.
|
|
|
Modification of the rig for testing the bearings for space applications
Škubna, Michal ; Okál, Michal (referee) ; Košťál, David (advisor)
This bachelor’s thesis deals with design modification of current device, intended for function verification of rolling bearings under space conditions. Due to the larger dimensions of the newly tested bearing, the existing device cannot be used and therefore it is necessary to modify it. One of the main priorities is to use the most of existing components and maintain the torsional rigidity of the original device. The output of the work is an accompanying report and drawing documentation for production of newly designed components and drawing of full assembly of the device.
|
|
|
Modification of the rig for testing the bearings for space applications
Škubna, Michal ; Okál, Michal (referee) ; Košťál, David (advisor)
This bachelor’s thesis deals with design modification of current device, intended for function verification of rolling bearings under space conditions. Due to the larger dimensions of the newly tested bearing, the existing device cannot be used and therefore it is necessary to modify it. One of the main priorities is to use the most of existing components and maintain the torsional rigidity of the original device. The output of the work is an accompanying report and drawing documentation for production of newly designed components and drawing of full assembly of the device.
|
|
|
Modification of the test rig for the testing the bearings for the space applications
Okál, Michal ; Křupka, Jiří (referee) ; Košťál, David (advisor)
This bachelor thesis deals with the design of a device, which allows exploration of rolling bearings properties in space conditions. The adjustment is necessary for testing of a new rolling bearing with different dimensions. Preload of the bearing must be centered and adapted for rapid heat exchange with the surroundings. The effort is made to use maximum number of existing components and torsion stiffness of the device. The thesis outputs are the accompanying report and the technical documentation allowing the production of new components.
|
guest ::
