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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Digital Image Correlation
 Jandejsek, Ivan ; Vavřík, Daniel
This paper presents the optical Digital Image Correlation method for in plane displacement field measurements. This method is based on tracing random structures, which are defined either by a sprayed pattern or by its own specimen surface structure. The displacements fields are obtained by measuring the mutual displacements of structure traced templates. The methodology for sub-pixel displacement measurements is presented.
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Radiographic Observation of Strain Field and Consequent Damage Zone Evolution
 Vavřík, Daniel ; Jakůbek, J. ; Jandejsek, Ivan
This work reports on results of the radiographic observation of 3D displacement/strain field and consequent damage evolution during loading of specimens with recognizable inner structure. In-plane deformations are evaluated from radiographs using the image correlation technique. The out-of plane displacement field is measured thanks to an accurate radiograph intensity to material thickness calibration.
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Posouzení hangaru pro civilní letadla na účinky větru s ohledem na odolnost a stabilitu konstrukce
 Král, Radomil ; Pospíšil, Stanislav ; Náprstek, Jiří
The paper assess a behaviour and an impact of the air flow on two hangar buildings. Special attention was devoted to the roofing constructions.
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