Dusan TRAJKOVİĆ, Jovan STEPANOVİĆ, Tatjana SARAC, Dragan STOJİLJKOVİĆ, Dragan ĐORĐİĆ

GERİ DÖNÜŞTÜRÜLMÜŞ VE NORMAL POLYESTERDEN ÜRETİLMİŞ DOKUSUZ YÜZEY JEOTEKSTİL ÜRÜNLERİNİN ELASTİK LİMİTİNİN TAHMİN EDİLMESİ

THE PREDICTION OF ELASTIC LIMIT OF NONWOVEN GEOTEXTILES MADE OF VIRGIN AND RECYCLED POLYESTER FIBERS

Mechanical properties of needled nonwoven geotextile materials depend on their structural solutions, as well as on the technological conditions in the production. Thereby, structural and physical-mechanical properties of fibers, surface mass of geotextiles and the needling process parameters have the most important function. The paper presents the results of the analysis of mechanical characteristics of nonwoven geotextile material made of virgin PES fibers and recycled PES fibers with surface masses of 150 g/m2, 200 g/m2, 250 g/m2, 300 g/m2 and 500 g/m2. Also, the elastic limits of deformation of needled geotextile materials are determined, which define permitted loads that geotextile materials can be subjected to, without disturbing their structure. Force intensities and work under these forces are determined at elastic limits of the geotextiles and their relationship with appropriate breaking parameters is presented. The proposed method and the results can be used to predict the permitted loads, which a non-woven geotextile material may be subjected to during exploitation

Keywords:

Deformation, Geotextiles, Elastic limit, Force, Elongation,

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1. Rawal A, Anandjiwala RD. Relationship between Process Parameters and Properties of Multifunctional Needlepunched Geotextiles. Journal of Industrial Textiles, 35(4) 271–285, 2006.
2. Antoine R, Courard L. Perforation Strengh of geosynthetics and Sphericity of coarse grains: a new approach. Geotextiles and Geomembranes 14(10) 585- 600, 1996.
3. Adolphe D, Lopes M and Sigli D. Experimental Study of Flow Through Geotextiles. Textile Research Journal 64(3) 176-182, 1994.
4. Cincik E and Koc E. An analysis on air permeability of polyester/viscose blended needle-punched nonwovens. Textile Research Journal 82(5) 430–442, 2012.
5. Rawal A, Anand S, Shah T. Optimization of Parameters for the Production of Needlepunched nonwoven Geotextiles. Journal of Industrial Textiles 37(4) 341-356, 2008.
6. Zhai H, Mallick SB, Elton D and Adanur S. Performance Evaluation of Nonwoven Geotextiles in Soil-Fabric Interaction. Textile Research Journal 66(4) 269- 276, 1996.
7. Saidi MA, Drean JY and Adolphe D. Laser Doppler Anemometry for an Experimental Study of Flow Through Geotextiles: Influence of Manufacturing Process. Textile Research Journal 69(1) 10-15, 1999.
8. Youjiang W. A method for tensile test of geotextile with confining pressure, Journal of Industrial Textiles 30(4) 289-302, 2001.
9. Ghosh TK. Punture resistence of pré-strained geotextiles and its relation to uniaxial tensile strain at failure. Geotextiles and Geomembranes 16(5) 293-302, 1998.
10. Gautier KB, Kocher CW and Drean JY. Anisotropic Mechanical Behavior of Nonwoven Geotextiles Stressed by Uniaxial Tension. Textile Research Journal 77(1) 20-28, 2007.
11. Rawal A, Patel SK, Kumar V, et. al. Damage analysis and notch sensitivity of hybrid needlepunched nonwoven materials. Textile Research Journal 83(11) 1103-1112, 2013.
12. Erdogan UH, Erdem N. A theoretical approach for predicting the tensile behavior of needle punched-heat set heavy geotextiles. Industria Textila 62(5) 227- 232, 2011.
13. Liao T, Adanur S and Drea JY. Predicting the Mechanical Properties of Nonwoven Geotextiles with the Finite Element Method. Textile Research Journal 67(10) 753-760, 1997.
14. Stepanovic J, Stojiljkovic D, Djordjic D, Trajkovic D. Мodeling of elongation of nonwoven geotextile materials. Industria Textila 65(2) 90-94, 2014.
15. Stepanovic J., Djordjic D., Trajkovic D., Skoko I., Analysis of deformation characteristics of nonwoven geotextile materials made of PES fibers for road construction, 5th TEXTEHInternational conference, Bucharest, Romania, 18.-19. 10, 2012, Proceedings 57-64.