|
|
Contact and non-contact method of surface texture evaluation
Harčarík, Matej ; Hammer, Miloš (referee) ; Jankových, Róbert (advisor)
The goal of this thesis was to create an overview of methods of surface texture evaluation, to analyse measurements of roughness profile parameters made with contact instruments and non-contact instrument Talysurf CCI Lite and to deduce practical recommendations from them. Based on measurements made, analyses of influence of cut-off settings on roughness measurement and of measurement variability were performed. Steps of the measurement process requiring special attention were identified. The output of this thesis is a proposal of measurement procedure for Talysurf CCI Lite.
|
|
|
Evaluation of control processes
Šimák, Martin ; Koška, Petr (referee) ; Pernikář, Jiří (advisor)
This bachelor thesis studies the theory of evaluation of control processes. The first part of the thesis discusses about organization of national legislation and metrology legislation. The next part of the study focuses on metrology terms, theory introduction to measurement uncertainty and their expression. The final section of the thesis is devoted to statistic evaluation of processes.
|
|
|
Quality Management system for the calibration of linear gauges
Dobeš, Jan ; Koška, Petr (referee) ; Pernikář, Jiří (advisor)
This bachelor thesis deals with the issues of calibration of gauges. The aim of the thesis is to create detailed calibration procedures and examplary measurements of selected types of length gauges. These gauges are gauge blocks, dial indicator, caliper, micrometer. This measuring was implemented in the calibration laboratory TM Technik s. r. o., where autor could obtain experiences from employees and discuss with them about these topics.
|
|
| |
|
| |
|
|
Pressure measurement
Jakubec, Jan ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
The project elaborated in a scope of engineer studies in branch 2301R016 submits summary of various methods of pressure measurement. Literary study draws up possibilities and variants of pin-pointing the absolute, relative and barometric pressure, suction, excess pressure and vacuum with analysis of its significance for engineering procedures. Main area is pressure of fluid, piston and bell-shaped gauges, deformation and electrical with examples of their practical use in engineering.
|
|
| |
|
|
Uncertainties of Accurate Length Measurement
Šrámek, Jan ; Brno), Václav Duchoň (ČMI (referee) ; Vdoleček, František (advisor)
This diploma thesis is supposed to inform readers interested in the distance measurements un-certainty on practical issues connected with the solving of these troubles when utilising a frequently used calibration method - the SIP distance meter. This measuring was implemented by the Czech Metrologic Institute, where the author works; therefore he could take advantage of his rich experience as well as experience of his superiors and colleagues. The author regards the national metrological institute (ČMI) as a sufficient guarantee for the hereinafter presented materials, both regarding the professional qualification and from the perspective of formal rightness of this thesis.
|
|
| |
|
|
Iodine-frequency stabilized Telecom laser diode at 515 nm
Philippe, Ch. ; Du Burck, F. ; Acef, O. ; Hrabina, Jan ; Pham, Minh Tuan
We have developed an original frequency tripling process based on a compact Telecom laser diode operating around 1542 nm associated to PPLN nonlinear crystals. The optical setup is fully fibred and delivers up to 300 mW at 514 nm. This output generated green radiation is used to probe a molecular vapor inserted in a 20 cm long iodine cell developed by ISI lab. The frequency stability of that reference laser is daily controlled within few parts of 10-16 over 1000 s of integration time. Allan variance associated to the frequency stability of our iodine stabilized telecom laser diode decreases with a slope of 1.4x10-13 with a minimum value of 3x10-14 around 40 s.
|
guest ::
