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Design of Tribometer for the Study of Wear Efects
Tatíček, Jiří ; Košťál, David (referee) ; Omasta, Milan (advisor)
This bachelor´s thesis is focused on design of tribometer to simulate wear real bodies and simultaneously to study the effect of wear on the lubricating film by using an optical interference method. In thesis are introduced the most widely used design of experimental equipments and on the basis of them are developed various design options. From them is subsequently selected the optimal variant. The output of this thesis are the production drawings.
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Development of method for lubrication regime evaluation in rolling bearing
Valenta, Jakub ; Čermák, Jan (referee) ; Šperka, Petr (advisor)
The aim of this master’s thesis is to develop measuring methods for evaluation of the lubrication regime in a rolling bearing. The first part of thesis maps several measuring methods according to which the lubrication mode can be evaluated. Based on the assessment of this part, electrical monitoring methods were selected. For application of these methods was constructed testing device with rolling bearing. Specific measuring chains based on selected methods were designed and verified by using initial tests on a ball-on-disk tribometer. According to the results of these initial measurements was selected and applied suitable measuring chain to the selected test device. In the end, there was a successful measuring the lubrication parameter on the rolling bearing. Additionally, other tests dealing with the influence of temperature and type of oil on the measurement itself were performed.
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Design of optical microtribometer
Poláček, Tomáš ; Zapletal, Tomáš (referee) ; Šperka, Petr (advisor)
The aim of this work is to design an optical microtribometer with the possibility of dynamic measurement of liquid friction in simulated point contact. The device should be designed to allow a microscope to observe the point contact. The work describes the construction of selected devices investigating forces in contacts. Their advantages and disadvantages when used in the given problematics are pointed out. Touch parameters were determined using formulas of Hertz stress. Subsequently, the design of the cantilever on which the ball (one of the contact surfaces) is to be attached has been discussed. Using the cantilever and capacitive position sensors, forces and dynamic contact behavior are subsequently measured. The micrometer head and the designed six-joint mechanism are used to draw the necessary load. The required movement of contact is created by the rotation of the disk provided by the synchronous belt transmission and the synchronous engine. At the end of the work, the dynamic behavior of the device is evaluated, with the frequencies at which the measurement results can be influenced. The parameters of the proposed microtribometer are compared with the parameters of the devices described in the research section.
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Development of method for lubrication regime evaluation in rolling bearing
Valenta, Jakub ; Čermák, Jan (referee) ; Šperka, Petr (advisor)
The aim of this master’s thesis is to develop measuring methods for evaluation of the lubrication regime in a rolling bearing. The first part of thesis maps several measuring methods according to which the lubrication mode can be evaluated. Based on the assessment of this part, electrical monitoring methods were selected. For application of these methods was constructed testing device with rolling bearing. Specific measuring chains based on selected methods were designed and verified by using initial tests on a ball-on-disk tribometer. According to the results of these initial measurements was selected and applied suitable measuring chain to the selected test device. In the end, there was a successful measuring the lubrication parameter on the rolling bearing. Additionally, other tests dealing with the influence of temperature and type of oil on the measurement itself were performed.
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|
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Design of optical microtribometer
Poláček, Tomáš ; Zapletal, Tomáš (referee) ; Šperka, Petr (advisor)
The aim of this work is to design an optical microtribometer with the possibility of dynamic measurement of liquid friction in simulated point contact. The device should be designed to allow a microscope to observe the point contact. The work describes the construction of selected devices investigating forces in contacts. Their advantages and disadvantages when used in the given problematics are pointed out. Touch parameters were determined using formulas of Hertz stress. Subsequently, the design of the cantilever on which the ball (one of the contact surfaces) is to be attached has been discussed. Using the cantilever and capacitive position sensors, forces and dynamic contact behavior are subsequently measured. The micrometer head and the designed six-joint mechanism are used to draw the necessary load. The required movement of contact is created by the rotation of the disk provided by the synchronous belt transmission and the synchronous engine. At the end of the work, the dynamic behavior of the device is evaluated, with the frequencies at which the measurement results can be influenced. The parameters of the proposed microtribometer are compared with the parameters of the devices described in the research section.
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|
|
Design of Tribometer for the Study of Wear Efects
Tatíček, Jiří ; Košťál, David (referee) ; Omasta, Milan (advisor)
This bachelor´s thesis is focused on design of tribometer to simulate wear real bodies and simultaneously to study the effect of wear on the lubricating film by using an optical interference method. In thesis are introduced the most widely used design of experimental equipments and on the basis of them are developed various design options. From them is subsequently selected the optimal variant. The output of this thesis are the production drawings.
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