The project in five facts.
Challenge, approach and results.
In the introductory part of the diploma thesis, the set objectives, purpose and basic propositions were presented, which had to be confirmed or rejected throughout the entire diploma thesis. Modern measurement methods and the latest standards used in metrology were employed to verify the propositions. Laboratory measurements showed that not every measurand is suitable for every method. The measurement methods used in this diploma thesis, which are also methods used daily in the laboratory, are 3D scanning with white structured light, computer-aided tomography, optical coordinate measuring machine and finally the most widespread and researched method of using a coordinate measuring machine.
Problem
In the introductory part of the diploma thesis, the set objectives, purpose and basic propositions were presented, which had to be confirmed or rejected throughout the entire diploma thesis.
Solution and Method
Modern measurement methods and the latest standards used in metrology were employed to verify the propositions. Very important were the use of accreditation body guidelines and the implementation of international accreditation standards for individual measurement methods. This was directly reflected in all measurements and activities in their accredited measurement laboratory.
This was followed by a study of the accreditation body requirements, which dictated the course of the reference artefact design study, and consequently the implementation itself in the production of the final model. This model served for the pre-agreed use of machining methods to manufacture the reference artefact on a modern CNC machining centre. The design of the reference artefact itself also included pre-selection of measurement methods.
This was reflected in the planning and design and ultimately the creation of the necessary measurement programmes for each measurement method, which ultimately served to obtain accreditation of measurement procedures. The selection of measurement methods in this work was systematic and experience-oriented.
Results
Laboratory measurements showed that not every measurand is suitable for every method. The measurement methods used in this diploma thesis, which are also methods used daily in the laboratory, are 3D scanning with white structured light, computer-aided tomography, optical coordinate measuring machine and finally the most widespread and researched method of using a coordinate measuring machine. To ultimately achieve confirmation of the diploma thesis guidelines, measurements were obtained on each measurement method, which were analysed and finally comparatively evaluated against each other.
Key to obtaining a realistic picture of the measurements were the use and consideration of measurement uncertainties and measurement errors of each measurement method. The results themselves showed a picture of mutual deviations, which were evaluated using methodical measurement errors. The conclusion of the inter-method analysis showed the actual deviation of each measurement method, which ultimately concluded with an indispensable mutual inter-method comparative analysis of results.
The obtained findings served as a guide in proving certain set hypotheses of this diploma thesis.
Module, programme and stories.
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