Quasi-static and dynamic tensile properties of large-rupture-strain (LRS) polyethylene terephthalate fiber bundle

Yu Lei Bai, Zhi Wei Yan, Togay Ozbakkaloglu, Qiang Han, Jian Guo Dai, De Ju Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

In this paper, the effect of the strain rate (1/600, 40, 80, 120 and 160 s−1) on the dynamic tensile mechanical properties of the polyethylene terephthalate (PET) fiber bundle at room temperate (25 centigrade) was studied using an MTS machine and an Instron drop-weight impact system. The experimental results showed that the tensile strength, failure strain, elastic modulus and toughness of the PET fiber bundle specimen were sensitive to the strain rate. The dispersion of the dynamic tensile strength at different strain rates was statistically quantified through a two-parameter Weibull distribution model. To investigate the deformation and failure mechanism of the PET fiber bundle at different strain rates, finite element analysis was conducted based on the Weibull distribution model of the dynamic tensile strength. Not only do the numerical simulations give close predictions for the stress-strain curve of the PET fiber bundle, but they also reveal the fracture process of the fiber bundle that cannot be captured in the test.

Original languageEnglish
Article number117241
JournalConstruction and Building Materials
Volume232
DOIs
Publication statusPublished - 30 Jan 2020

Keywords

  • Dynamic tensile mechanical properties
  • Numerical simulation
  • Polyethylene terephthalate (PET)
  • Strain rate
  • Weibull analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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