Application of Microtomography in Textile Metrology.

Doczyova, Katarina; Glombikova, Viera; Komarkova, Petra

Porosity represents one of the parameters of knitted fabrics, which significantly affects their air permeability and thus the overall physiological comfort of knitted clothes. X-ray computed microtomography (μCT) is a relatively new but not yet widely used method for studying textile porosity. The paper discusses the use of a 3D image of the textile structure obtained by applying μCT in the textile metrology. Specifically, it deals with the analysis of options for determining the 3D porosity of knitted fabric by μCT and subsequent analysis of the relationship of porosity versus the fabric permeability to air. The first part of the article was aimed to analyse the suitability of application of μCT to determine the 3D porosity of textile materials and determination of appropriate measurement conditions. Obtained porosity data measured by the 3D device SkyScan 1174 was compared to the porosity calculated by the standard mathematical model. The research results show that μCT system is suitable alternative method for 3D porosity measurement. There is very small difference (about 6%) between the percentage of the air volume of the examined knitted fabric obtained by μCT (64.6%) and porosity expressed through the volume fraction by standard mathematical model (70.6%). The last part analyses the dependent relationship between porosity of the knitted structures obtained by using μCT SkyScan 1174 and air permeability measured on FX device 3300 according to EN ISO 9237. Analysis between air permeability and measured porosity of others knitted structures verifi ed correctness of suggested measurement process of 3D porosity.

X-ray computed microtomography; METROLOGY; TEXTILE permeability; FLUID dynamic measurements; POROSITY; MATHEMATICAL models

Tekstilec, 2014, Vol 57, Issue 1, p4

0351-3386

Academic Journal

10.14502/Tekstilec2014.57.4-11