Analysis of rate-dependent tensile properties of polypropylene fibres used in thermally bonded nonwovens
JOURNAL OF THE TEXTILE INSTITUTE, vol.107, no.9, pp.965-971, 2013 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 107 Issue: 9
- Publication Date: 2013
- Doi Number: 10.1080/00405000.2013.766391
- Journal Name: JOURNAL OF THE TEXTILE INSTITUTE
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.965-971
- Hacettepe University Affiliated: No
Abstract
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.