Autoři
Mušutová, V. - Tej, P. - Kolísko, J., - Černý, M.
Publikováno v
In: Advances in Materials and Materials Processing V. Zurich: TRANS TECH PUBLICATIONS LTD, 2015. pp. 3-7. ISSN 1662-8985. ISBN 978-3-03835-431-4.
Rok
2015
Související lidé
Anotace
This paper is concerned with the evaluation of the parameters of plain weave textile from
Kevlar 49 fibers. They were determined following the basic parameters of the textiles e.g. crimp
length, crimp amplitude, thickness of the woven fabric, dimensions of the cross-sectional tow (tow
width, tow height) and crimp angle. The number of fibers in the warp and tow strands was also
determined.
The work is also concerned with the analysis of microcracks in the material, that is, microcracks
that appeared after the tensile test. Microscopic observation of cracks occurred on the test specimen
strip according to DIN EN ISO 14129 for tensile testing.Strips of the material were cut,the
metallurgical methods used being kept perpendicular to the thickness of the test
specimen.Microcracks occurred in the individual planes located in the chosen reference
axis.Microcracks were detected in the entire width of the specimen.The types of microcracks were
determined by the length and traits of the microcracks.