Stanovení standardních měřících nejistot Kaplanovy turbínové lopatky

Abstract

This diploma thesis addresses the issue of measurement uncertainties for geometrically complex components, specifically Kaplan turbine blades. The theoretical section analyses the current state of the field of measurement uncertainties, defines standard uncertainties, and establishes mathematical relationships for their calculation. Emphasis is also placed on identifying key sources influencing these uncertainties and the methodology for their proper expression. The practical part focuses on the experimental measurement of a series of blade samples using the ATOS Q 3D optical scanner. The measurement procedure and the methodology for determining standard uncertainty type B based on the analysis of partial influences are described in detail. The acquired data are subsequently processed statistically to evaluate process stability and to determine both combined and expanded uncertainties. As part of the evaluation, the overall surface deviation is analysed, and a detailed profile inspection is performed across three defined cross-sections. The surface quality of boundary samples is visualised through colour deviation maps. The final results and measurement uncertainty values are presented in graphical form.