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Methodology for remote diagnostic of the automotive shock absorbers
Halama, Jakub ; Dočkal, Aleš (referee) ; Klapka, Milan (advisor)
The diploma thesis deals with the application of acoustic methods for evaluating the technical condition of the shock absorbers. Analysis of acoustic radiation during damping operation leads to the definition of a new non-contact diagnostic methodology that can determine the condition of the shock absorbers. The first part of the thesis focuses on the noise radiation of the shock absorbers, which is caused by discontinuous dumping. Further, the methods for the noise source localization available at The Institute of Machine and Industrial Design are described – with their functionalities, advantages and limitations. Based on all the information, an appropriate method is selected and used in the experimental part of this work. Then, aeration and removing the full volume of oil with damage of the shock absorber tube are caused (induced) on several types of the shocks. Noise radiation is measured by a microphone array and by a sound meter; the acoustic maps, frequency spectra and the synchronous filtration graphs are calculated from the measured data. From the differences in the acoustic radiations of each shock condition, a suitable diagnostic criterion for a specific shock absorber is defined. The final part discusses obtained results. Based on these results, a general diagnostic methodology, applicable to any type of shock absorber, is formulated.
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Analysis of Kinematic and Dynamic of Knee Joint
Halama, Jakub ; Dočkal, Kryštof (referee) ; Urban, Filip (advisor)
The bachelor thesis summarizes present knowledge of the knee joint in terms of its mechanics, it compares joint kinematics and dynamics during various locomotor activities of daily living such as: gait, standing up from the chair, ascending and descending stairs, running. Furthermore, the thesis focuses on the changes in the motion and loading of the joint in the cases of osteoarthritis and knee replacement in comparison with healthy individuals. Lastly, it also describes the loading asymmetries between healthy and affected knee.
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Roman-germanic relationship and contacts in roman age in the light of finds from roman provenance in Bohemia, maily TERRA SIGILLATA fings
Halama, Jakub ; Košnar, Lubomír (advisor) ; Tyszler, Lubomira (referee) ; Musil, Jiří (referee)
Jakub Halama - anglický abstrakt dizertace Roman-germanic relationship and contacts in roman age in the light of finds from roman provenance in Bohemia, mainly TERRA SIGILLATA finds Abstract Dissertation thesis in particular are based on terra sigillata finds in Bohemia. In the first part of catalogue (certain finds) there are 103 pieces of terra sigillata from 52 localities (together 112 fragments and whole vessels). And in the second part of the catalogue (unsure or non-filed finds) other 23 - 24 pieces from 15 localities. Generally terra sigillata comes from German settlements, those are spread through all the main settlement areas of the Roman period. Records from the southwest Bohemia are also interesting. Main part from the datable 1st - 3rd century terra sigillata have goods from Rheinzabern (41 %) and from the central Gallia (35,9 %); ceramics from Westerndorf is less represented (7,7 %) and there are only few terra sigillata finds from the south Gallia, Trier, Heiligenberg and Pfaffenhofen. This combination of the finds is approximate to localities in Norikum province. Sigillata of this origin came through south Bohemia and Moravia, other direction went from Raetie through southwest Bohemia. Artifacts from 1st century and 1st half of the 2nd century appears in Bohemia very rare. The largest supply...
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Methodology for remote diagnostic of the automotive shock absorbers
Halama, Jakub ; Dočkal, Aleš (referee) ; Klapka, Milan (advisor)
The diploma thesis deals with the application of acoustic methods for evaluating the technical condition of the shock absorbers. Analysis of acoustic radiation during damping operation leads to the definition of a new non-contact diagnostic methodology that can determine the condition of the shock absorbers. The first part of the thesis focuses on the noise radiation of the shock absorbers, which is caused by discontinuous dumping. Further, the methods for the noise source localization available at The Institute of Machine and Industrial Design are described – with their functionalities, advantages and limitations. Based on all the information, an appropriate method is selected and used in the experimental part of this work. Then, aeration and removing the full volume of oil with damage of the shock absorber tube are caused (induced) on several types of the shocks. Noise radiation is measured by a microphone array and by a sound meter; the acoustic maps, frequency spectra and the synchronous filtration graphs are calculated from the measured data. From the differences in the acoustic radiations of each shock condition, a suitable diagnostic criterion for a specific shock absorber is defined. The final part discusses obtained results. Based on these results, a general diagnostic methodology, applicable to any type of shock absorber, is formulated.
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Roman-germanic relationship and contacts in roman age in the light of finds from roman provenance in Bohemia, maily TERRA SIGILLATA fings
Halama, Jakub ; Košnar, Lubomír (advisor) ; Tyszler, Lubomira (referee) ; Musil, Jiří (referee)
Jakub Halama - anglický abstrakt dizertace Roman-germanic relationship and contacts in roman age in the light of finds from roman provenance in Bohemia, mainly TERRA SIGILLATA finds Abstract Dissertation thesis in particular are based on terra sigillata finds in Bohemia. In the first part of catalogue (certain finds) there are 103 pieces of terra sigillata from 52 localities (together 112 fragments and whole vessels). And in the second part of the catalogue (unsure or non-filed finds) other 23 - 24 pieces from 15 localities. Generally terra sigillata comes from German settlements, those are spread through all the main settlement areas of the Roman period. Records from the southwest Bohemia are also interesting. Main part from the datable 1st - 3rd century terra sigillata have goods from Rheinzabern (41 %) and from the central Gallia (35,9 %); ceramics from Westerndorf is less represented (7,7 %) and there are only few terra sigillata finds from the south Gallia, Trier, Heiligenberg and Pfaffenhofen. This combination of the finds is approximate to localities in Norikum province. Sigillata of this origin came through south Bohemia and Moravia, other direction went from Raetie through southwest Bohemia. Artifacts from 1st century and 1st half of the 2nd century appears in Bohemia very rare. The largest supply...
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Analysis of Kinematic and Dynamic of Knee Joint
Halama, Jakub ; Dočkal, Kryštof (referee) ; Urban, Filip (advisor)
The bachelor thesis summarizes present knowledge of the knee joint in terms of its mechanics, it compares joint kinematics and dynamics during various locomotor activities of daily living such as: gait, standing up from the chair, ascending and descending stairs, running. Furthermore, the thesis focuses on the changes in the motion and loading of the joint in the cases of osteoarthritis and knee replacement in comparison with healthy individuals. Lastly, it also describes the loading asymmetries between healthy and affected knee.
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