Dynamic tensile properties of polyethylene terephthalate fiber bundle with large deformability

Y. L. Bai, Z. W. Yan, J. G. Dai, D. J. Zhu, Q. Han, X. L. Du

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this paper, strain rate effects on the tensile mechanical properties of Polyethylene Terephthalate (PET) fiber bundles at room temperate were studied. First of all, an MTS load frame together with an Instron drop-weight impact system were used to carry out the tensile test under the quasi-static (1/600s-1) and the dynamic loadings (40, 80, 120 and 160s-1), respectively. The dynamic mechanical properties, consisting of the tensile strength, peak strain, elastic modulus and toughness, were analyzed based on the test data. It was concluded that the tensile strength increases with strain rate while the peak strain and toughness decrease with the strain rate. The initial elastic modulus remains almost unchanged at the low strain rate (no more than 40s-1) and starts to grow when the strain rate is beyond 40s-1. The second-stage elastic modulus rises continuously with the strain rate from 1/600 to 160s-1. Afterwards, the dynamic tensile strength of a PET fiber bundle was statistically analyzed by using the two-parameter Weibull distribution model that can help to quantify the scatter of the dynamic tensile strength. The corresponding parameters can be added into a numerical simulation in future to reflect the different tensile strength caused by defects.

Original languageEnglish
Title of host publication9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
EditorsEmmanuel Ferrier, Karim Benzarti, Jean-Francois Caron
PublisherInternational Institute for FRP in Construction (IIFC)
Pages183-186
Number of pages4
ISBN (Electronic)9780000000002
Publication statusPublished - 1 Jan 2018
Event9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018 - Paris, France
Duration: 17 Jul 201819 Jul 2018

Publication series

Name9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
Volume2018-July

Conference

Conference9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
Country/TerritoryFrance
CityParis
Period17/07/1819/07/18

Keywords

  • Dynamic tensile mechanical properties
  • Polyethylene terephthalate
  • Strain rate
  • Weibull analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Polymers and Plastics

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