. . "Efficient Global Evaluation of Textile Composite Structure Using Standard Computer Tomography"@en . "Computer tomography (CT) is a modern non-destructive method in principle suitable for visualization of inner structure of textile composites. Due to the low resolution of commercial apparatus, the structure details cannot be found. On theother hand, the areas of missing yarns, gaps, are well visible. These areas have a negative effect on composite properties. The paper shows that by application of simple image processing procedures (adjust, filter and threshold) from MATLAB,the determination of relative gap amount is possible. The program application needs a calibration stage, in which two key parameters must be set up by visual comparison of resulting and original image. Then the structure evaluation is fullyautomated. As a result, about 20 % of large gaps are in glass fiber reinforced composite. Furthermore, by application of image analysis methods the gaps dimensions can be found. Using 3D graphics, actual space shape of gaps can be visualised." . "Po\u010D\u00EDta\u010Dov\u00E1 tomografie je modern\u00ED nedestruktivn\u00ED metoda pro zobrazov\u00E1n\u00ED vnit\u0159n\u00ED struktury materi\u00E1l\u016F. B\u011B\u017En\u00E9 aparatury bohu\u017Eel nemaj\u00ED dostate\u010Dnou p\u0159esnost a tak nejsou patrn\u00E9 detaily.I p\u0159esto je mo\u017En\u00E9 z t\u011Bchto sn\u00EDmk\u016F vy\u010D\u00EDst z\u00E1kladn\u00ED struktur\u00E1ln\u00ED parametry pevn\u00E9 vazby."@cs . . . "Lomov, Stepan" . "P(GD106/03/H150)" . . "Ko\u0161ek, Miloslav" . . "Efficient Global Evaluation of Textile Composite Structure Using Standard Computer Tomography" . . "24220" . . "2004-01-01+01:00"^^ . . "Technick\u00E1 univerzita v Liberci" . "17-24" . . . "Efficient Global Evaluation of Textile Composite Structure Using Standard Computer Tomography"@en . "Liberec" . "Liberec" . "STRUTEX" . . . "[80E1CCEF074A]" . "%22Efficient;Automated;Approximation;Yarn;Tomography;%22"@en . . "8"^^ . "80-7083-891-4" . "Efficient Global Evaluation of Textile Composite Structure Using Standard Computer Tomography" . "RIV/46747885:24220/04:00000134" . . "Vodolan, Jan" . "RIV/46747885:24220/04:00000134!RIV/2005/GA0/242205/N" . "Efektivn\u00ED vyhodnocen\u00ED glob\u00E1ln\u00ED struktury kompozitn\u00EDch materi\u00E1l\u016F s vyu\u017Eit\u00EDm po\u010D\u00EDta\u010Dov\u00E9 tomografie"@cs . . "Efektivn\u00ED vyhodnocen\u00ED glob\u00E1ln\u00ED struktury kompozitn\u00EDch materi\u00E1l\u016F s vyu\u017Eit\u00EDm po\u010D\u00EDta\u010Dov\u00E9 tomografie"@cs . "3"^^ . "562236" . . . . "2"^^ . . "Computer tomography (CT) is a modern non-destructive method in principle suitable for visualization of inner structure of textile composites. Due to the low resolution of commercial apparatus, the structure details cannot be found. On theother hand, the areas of missing yarns, gaps, are well visible. These areas have a negative effect on composite properties. The paper shows that by application of simple image processing procedures (adjust, filter and threshold) from MATLAB,the determination of relative gap amount is possible. The program application needs a calibration stage, in which two key parameters must be set up by visual comparison of resulting and original image. Then the structure evaluation is fullyautomated. As a result, about 20 % of large gaps are in glass fiber reinforced composite. Furthermore, by application of image analysis methods the gaps dimensions can be found. Using 3D graphics, actual space shape of gaps can be visualised."@en .