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Now showing items 1-9 of 9

    • THE INFLUENCE OF FRICTION STIR WELDED PROCESS PARAMETERS OF AA2519T62 ON JOINT QUALITY DEFINED BY NONDESTRUCTIVE LASER AMPLIFIED ULTRASONIC METHOD AND BY MICROSTRUCTURE ANALYSIS 

      Author: Kravcov , Alexander; Kosturek , Robert; Śnieżek , Lucjan; Kluczyński , Janusz; Franek , Ondřej; Morozov , Nikolaj; Maciejewski , Pawel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The presented research contains a description of a non-destructive laser ultrasound internal structure analysis of aluminium joints made by friction stir welding. In the research, four selected technological parameter ...
    • APPLICATION OF FMEA METHODOLOGY FOR CHECKING OF CONSTRUCTION´S PROJECT DOCUMENTATION AND DETERMINATION OF THE MOST RISK AREAS FOR CHECKING ACCORDING TO MEASURED DATA 

      Author: Tuháček , Martin; Franek , Ondřej; Svoboda , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The article deals with an innovative method designed to check project documentation of buildings at the design stage, specifically exploring the possibility to implement FMEA and PDCA methodologies. Based on performed ...
    • LASER ULTRASONIC MEASUREMENT OF MECHANICAL DECAY IN LIMESTONE CAUSED BY FREEZETHAW CYCLES 

      Author: Kravcov , Alexander; Franek , Ondřej; Morozov , Nikolaj; Kucewicz , Michał; Tomaszewski , Michał; Svoboda , Pavel; Baranowski , Paweł
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      In this article, an innovative new method of non-destructive testing for estimating the sensitivity of limestone is presented. An advantage of the laser ultrasonic structuroscopy method is the time and the quality, due to ...
    • A COMPARISON OF TWO MODAL ANALYSIS METHODS: AN IMPACT HAMMER VERSUS LASER VIBROMETRY 

      Author: Krejčí , Jakub; Beneš , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This paper presents a comparative experimental-analytical study on the performance of Multi-Input Single-Output (MISO) and Single-Input Multi-Output (SIMO) techniques to identify the modal properties of a cantilever beam. ...
    • MODELING OF MATERIAL BALANCE FROM THE EXPERIMENTAL UCG 

      Author: Durdán , Milan; Terpák , Ján; Kačur , Ján; Laciak , Marek; Flegner , Patrik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The underground coal gasification is a continually evolving technology, which converts coal to calorific gas. There are many important parameters in this technology, which are difficult to measure. These parameters include ...
    • Some Properties of a Differential Sequence BAsed upon the KummerSchwarz Equation 

      Author: Maharaj , Adhir; Andriopoulos , Kostis; Leach , Peter
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      In this paper, we determine a recursion operator for the Kummer-Schwarz equation, which leads to a sequence with unacceptable singularity properties. A different sequence is devised based upon the relationship between the ...
    • Additive Laser Barcode Printing on High Reflective Stainless Steel 

      Author: Mihalev , Mihail Stoyanov; Hardalov , Chavdar Momchilov; Christov , Christo Georgiev; Rinke , Monika; Leiste , Harald; Schneider , Johannes
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      In this paper, the process of an additive laser marking on stainless steel parts for barcode printing is presented. It is based on the use of one transition metal oxide chemically-well bonded to the stainless steel substrate, ...
    • Coupled ElectromagneticThermal Simulation of a Power Transformer by 3D FEM 

      Author: Henriques , Henrique Oliveira; Vizeu , Carlos Eduardo; Souza , Paulo Cesar; Costa , Mauricio Caldora; Sotelo , Guilherme Gonçalves; Sousa , Jonaylton Moura; Fortes , Marcio Zamboti; Ferreira , Vitor Hugo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Power transformers are the most common equipment in an electric power system, which has been manufactured in the last decade. However, overheating can damage them, considerably reducing their operation lives, which may ...
    • DEVELOPMENT OF NUMERICAL MODELS FOR THE PREDICTION OF TEMPERATURE AND SURFACE ROUGHNESS DURING THE MACHINING OPERATION OF TITANIUM ALLOY Ti6Al4V 

      Author: Daniyan , Ilesanmi; Tlhabadira , Isaac; Mpofu , Khumbulani; Adeodu , Adefemi
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Temperature and surface roughness are important factors, which determine the degree of machinability and the performance of both the cutting tool and the work piece material. In this study, numerical models obtained from ...