Analysis of rate-dependent tensile properties of polypropylene fibres used in thermally bonded nonwovens


Sabuncuoglu B. , Demirci E., Acar M., Silberschmidt V. V.

JOURNAL OF THE TEXTILE INSTITUTE, cilt.107, ss.965-971, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 107 Konu: 9
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1080/00405000.2013.766391
  • Dergi Adı: JOURNAL OF THE TEXTILE INSTITUTE
  • Sayfa Sayıları: ss.965-971

Özet

The stress-strain behaviour of polypropylene fibres is evaluated for various tensile strain rates. Fibre samples are extracted from a thermally bonded nonwoven and fixed in a low-load tensile test machine. A methodology is introduced to implement a constant true strain rate at high strain tests for conventional tensile test machines. The obtained results indicate that polypropylene fibres show a highly viscous behaviour, especially during the initial stage of load application. No significant difference in a tensile behaviour of fibres was observed for loading regimes with a constant true strain rate and a constant engineering strain rate.