2 research outputs found

    Comparison of estimated nominal values of static charactersitics based on measurements by different methods

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    One of the quality requirements of thermal imaging devices used in surveillance systems and in forensics refers to the assessment of its capabilities in relation to remote detection, recognition and identification of far-off objects of interest. This paper discusses the concept of spatial frequency and compares the estimated values of the nominal static characteristics of the range based on the measurement of the characteristics of a thermal imaging camera according to standard methods (MRTD - Minimum Resolvable Tempera-ture Difference, MDTD - Minimum Detectable Temperature Difference, TOD - Triangle Orientation Discrimination) on an arbitrarily chosen thermal imaging camera

    STRESS CALCULATION AND DEFORMATION OF TANKS LOADED BY INTERNAL GAS PRESSURE LOCATED IN CITY HEATING PLANTS

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    The paper presents the procedure for calculating stress in gas pressure tanks using finite shell elements for linear and geometrically nonlinear analysis. Therefore, a procedure has been developed to automatically generate the necessary data for the finite element method (FEM), such as geometry, numbering of elements and nodes, and the determination of forces. Forces are calculated from: pressure difference in relation to external pressure; hydrostatic pressure and gas pressure; and pressure vessel weight. It enables fairly simple and easy use of developed software in everyday practice and provides great opportunities for further upgrading and fundamental determination of the impact on parameters for different types of tanks and pressure containers in general
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