Chaban O. Development of Quality Estimation Methods for Production and Services through Single and Generalized Indices

The dissertation is dedicated to the research and development of construction principles and evolution of quality estimation methods for products and services. New methods of quality evaluation through single quality indices and due to the information gained at testing material (production) by an utter test signal are proposed on the basis of product quality estimation existing principles and algorithms. The vector method enables us to conduct quality estimation through two values - quality modulus and quality phase. The given method does not demand determining weight coefficients of every quality index in the expert way. The technique of quality evaluation of materials made from powder (by pressing and thermo-processing) due to the information on altering the test signal reflected from the a ray surface. Analytical relations for the quality evaluation of powdering material due to the intensity of a reflected ray within the given angle range that is registered by an eradiation receiver are proposed. The selection methods of the powdering material base (standard) pattern further used for its comparison with other researched powdering materials due to the characteristics of reflected rays' indicatrises are proposed. The veracity verification of received quality estimation performed with the proposed methods is conducted