o:1299 Istraživanje deformacionih karakteristika netkanih geotekstilnih materijala od poliestarskih i polipropilenskih vlakana Research of deformation characteristics of nonwoven geotextile metarials made of polyester and polypropylene fibres : doctoral dissertation sr In order to provide more efficient production and use of geotextile materials, their structural and mechanical properties, and then elastic limits of geotextile were defined, and a rheological model which can be used for the prediction of the behavior of geotextiles during exploitation was developed. Based on the obtained results, the limits of the elastic deformation of needled geotextile materials which define the permitted load that geotextile materials can be subjected to without disturbing their structure were determined. Also, the interconnectivity of parameters of the limit of elastic deformations with the parameters on the breaking limit of geotextile materials was analyzed. The elongation of geotextile made from regular polyester, recycled polyester and polypropylene fibers is described by differential equations that are based on mechanical models. Rheological model will contribute to the development of the methods for the prediction of mechanical properties of needled geotextile materials according to their use. In this way the technical preparation of the production is simplified and improved, and the conditions for the exclusion of the test series are fulfilled, which contributes to energy and raw materials savings. Biografija autora: str. 198 Datum odbrane: 13.01.2017. Textile technology 533876886 91552101 4932 91552100 533876886 2017-05-09T14:16:06.053Z 45 no 46 mentor Dragan M. 1982- Đorđić 2016 63 mentor Jovan Stepanović 2016 63 član komisije Dušan Trajković 2016 63 član komisije Dragan Stojiljković 2016 63 član komisije Zafirova Koleta 2016 63 član komisije Vasilije Petrović 2016 198 str. 6884506 http://phaidrabg.bg.ac.rs/o:1299 no yes 4 2017-05-09T14:16:06.320Z 70 geotekstil, deformacija, sila, izduženje, granica elastičnosti,reološki model geotextile, deformation, force, elongation, elastic limit, rheological model 677.076.4:677.494.674(043.3) T 470 1738 18A08 18A0806 2016