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Reliability and Communikation in Man-Machine-Systems
Kovář, Tomáš ; Žurek, Martin (referee) ; Havlíková, Marie (advisor)
The objective of this work is to analyse the technical and human reliability in the man-vehicle system. The reliability of the whole system is given by the individual reliabilities of technical subsystems and human operators. In the analysis of safety and readiness of technical systems, it is necessary to monitor human effects on the reliability, safety and readiness of these systems, which directly put people’s lives at risk. The human operator influences the safety and reliability of the whole system by his actions and operation of the device. The quantitative evaluation of human reliability is based on an overall probabilistic safety analysis. Since drivers directly control the means of transport, the human operator’s reliability is entirely determining for the overall reliability of the system. External and human factors influencing performance affect the man-machine system. The activity tree model serves for the evaluation of reliability of the MMS system and provides a concise, organised and well-arranged description of defects within the system.
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Workability study 3D metal printing as technology for prototype plastic parts manufacturing
Kovář, Tomáš ; Herčík, Tomáš (referee) ; Sigmund, Marian (advisor)
This bachelor thesis is focused on the feasibility of metallic 3D printing. The 90MnCrV8 tool steel die is time consuming and expensive to manufacture by conventional methods. When considering the use of a die for a maximum of 50 pieces of moldings, it is possible to choose a material other than tool steel. From the offered possibilities of metal 3D printing, 2 suitable methods were selected, namely SLM and WAAM, where the WAAM method appears to be cheaper. Available materials for steel replacement 90MnCrV8 are metal wire G4Si1 for WAAM method and stainless steel X2CrNiMo17-12-2 for the SLM method. After listing all the options and evaluations, it can be seen that the feasibility of metallic 3D printing as a replacement for conventional tool production is possible.
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Workability study 3D metal printing as technology for prototype plastic parts manufacturing
Kovář, Tomáš ; Herčík, Tomáš (referee) ; Sigmund, Marian (advisor)
This bachelor thesis is focused on the feasibility of metallic 3D printing. The 90MnCrV8 tool steel die is time consuming and expensive to manufacture by conventional methods. When considering the use of a die for a maximum of 50 pieces of moldings, it is possible to choose a material other than tool steel. From the offered possibilities of metal 3D printing, 2 suitable methods were selected, namely SLM and WAAM, where the WAAM method appears to be cheaper. Available materials for steel replacement 90MnCrV8 are metal wire G4Si1 for WAAM method and stainless steel X2CrNiMo17-12-2 for the SLM method. After listing all the options and evaluations, it can be seen that the feasibility of metallic 3D printing as a replacement for conventional tool production is possible.
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Reliability and Communikation in Man-Machine-Systems
Kovář, Tomáš ; Žurek, Martin (referee) ; Havlíková, Marie (advisor)
The objective of this work is to analyse the technical and human reliability in the man-vehicle system. The reliability of the whole system is given by the individual reliabilities of technical subsystems and human operators. In the analysis of safety and readiness of technical systems, it is necessary to monitor human effects on the reliability, safety and readiness of these systems, which directly put people’s lives at risk. The human operator influences the safety and reliability of the whole system by his actions and operation of the device. The quantitative evaluation of human reliability is based on an overall probabilistic safety analysis. Since drivers directly control the means of transport, the human operator’s reliability is entirely determining for the overall reliability of the system. External and human factors influencing performance affect the man-machine system. The activity tree model serves for the evaluation of reliability of the MMS system and provides a concise, organised and well-arranged description of defects within the system.
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