Author, institution: Darius Vainilavičius, Kaunas University of Technology
Science area, field: Technology Sciences, Measurement Engineering – 10T
The Doctoral Dissertation is available at the library of Kaunas University of Technology (K. Donelaičio St. 20, Kaunas).
Scientific Supervisor: Prof. Dr. Habil. Stasys Vygantas AUGUTIS (Kaunas University of Technology, Technological Sciences, Measurement Engineering – 10T).
Dissertation Defence Board of the Measurement Engineering Science Field:
Prof. Dr. Liudas MAŽEIKA (Kaunas University of Technology, Technological Sciences, Measurement Engineering -10T) – chairman;
Prof. Dr. Mindaugas JUREVIČIUS (Vilnius Gediminas Technical University, Technological Sciences, Measurement Engineering -10T);
Prof. Dr. Habil. Vladimir T. MICHENYA (Belarusian National Technical University, Technological Sciences, Mechanical Engineering -09T);
Prof. Dr. Renaldas RAIŠUTIS (Kaunas University of Technology, Technological Sciences, Measurement Engineering -10T);
Dr. Egidijus ŽUKAUSKAS (Kaunas University of Technology, Technological Sciences, Measurement Engineering -10T).
Annotation:
Due to the specific construction of precise rotary systems, small changes of working parameters can cause noticeable vibration changes. The diagnostics of these systems due to specific construction and work regimes requires unique measurement solutions.
The objective of the dissertation is to develop methods and instruments for the measurement of the diagnostic parameters for specific rotary systems, asses their metrological characteristics, and implement practical applications. This work is dedicated to the investigation of three rotor systems. Specific measurement systems are proposed for the measurement of the diagnostic parameters of these rotor systems. The hardware designs and signal processing algorithms are described. The uncertainty analysis of these systems are performed. The proposed systems were developed and used as instruments for the research of specific rotary systems. The possibilities for the compensation of an aerodynamic imbalance with the mechanical imbalance was described. The methods for assessment of blades inequality in working mode were proposed. The analysis of autogyros rotor and cabin vibrations magnitude and frequency spectrum revealed the impact of rotor balancing and aerodynamic conditions on the vibrations level. The assessment of paper folding machine working segment rings quality was performed.
