Biaxial characterisation of poly(ether-ether-ketone) for thermoforming: A comparison between bulge and in – plane biaxial testing

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The biaxial response of extruded PEEK films at conditions relevant to thermoforming has been investigated extensively using a combination of load controlled (bulge test) and displacement controlled (biaxial stretcher) experiments. Results from bulge testing yielded average and maximum strain rate ranges of 2.5 – 5 s-1 and 5 – 18 s-1 respectively, across the forming temperature range. In-plane biaxial characterisation highlighted the anisotropic non-linear viscoelastic behaviour of the films with strong dependence on the yield and strain hardening behaviour on the temperature and strain history at conditions equivalent to the forming process. The combined approach to material characterisation highlights the pros and cons of each test method, the complementary nature of the data generated and the need to use both methods to have a complete data set for developing accurate material models and validated numerical simulations of thermoforming.
LanguageEnglish
Pages1853-1865
Number of pages13
JournalPolymer Engineering & Science
Volume59
Issue number9
Early online date17 Jul 2019
DOIs
Publication statusPublished - Sep 2019

Fingerprint

Thermoforming
Polyether ether ketones
Testing
Strain hardening
Strain rate
Temperature
Computer simulation
Experiments
polyetheretherketone

Cite this

@article{d2b967aee2494b5fb4e07a03e2e57b80,
title = "Biaxial characterisation of poly(ether-ether-ketone) for thermoforming: A comparison between bulge and in – plane biaxial testing",
abstract = "The biaxial response of extruded PEEK films at conditions relevant to thermoforming has been investigated extensively using a combination of load controlled (bulge test) and displacement controlled (biaxial stretcher) experiments. Results from bulge testing yielded average and maximum strain rate ranges of 2.5 – 5 s-1 and 5 – 18 s-1 respectively, across the forming temperature range. In-plane biaxial characterisation highlighted the anisotropic non-linear viscoelastic behaviour of the films with strong dependence on the yield and strain hardening behaviour on the temperature and strain history at conditions equivalent to the forming process. The combined approach to material characterisation highlights the pros and cons of each test method, the complementary nature of the data generated and the need to use both methods to have a complete data set for developing accurate material models and validated numerical simulations of thermoforming.",
author = "Josh Turner and Gary Menary and Peter Martin",
year = "2019",
month = "9",
doi = "10.1002/pen.25185",
language = "English",
volume = "59",
pages = "1853--1865",
journal = "Polymer Engineering and Science",
issn = "0032-3888",
publisher = "John Wiley and Sons Inc.",
number = "9",

}

TY - JOUR

T1 - Biaxial characterisation of poly(ether-ether-ketone) for thermoforming: A comparison between bulge and in – plane biaxial testing

AU - Turner, Josh

AU - Menary, Gary

AU - Martin, Peter

PY - 2019/9

Y1 - 2019/9

N2 - The biaxial response of extruded PEEK films at conditions relevant to thermoforming has been investigated extensively using a combination of load controlled (bulge test) and displacement controlled (biaxial stretcher) experiments. Results from bulge testing yielded average and maximum strain rate ranges of 2.5 – 5 s-1 and 5 – 18 s-1 respectively, across the forming temperature range. In-plane biaxial characterisation highlighted the anisotropic non-linear viscoelastic behaviour of the films with strong dependence on the yield and strain hardening behaviour on the temperature and strain history at conditions equivalent to the forming process. The combined approach to material characterisation highlights the pros and cons of each test method, the complementary nature of the data generated and the need to use both methods to have a complete data set for developing accurate material models and validated numerical simulations of thermoforming.

AB - The biaxial response of extruded PEEK films at conditions relevant to thermoforming has been investigated extensively using a combination of load controlled (bulge test) and displacement controlled (biaxial stretcher) experiments. Results from bulge testing yielded average and maximum strain rate ranges of 2.5 – 5 s-1 and 5 – 18 s-1 respectively, across the forming temperature range. In-plane biaxial characterisation highlighted the anisotropic non-linear viscoelastic behaviour of the films with strong dependence on the yield and strain hardening behaviour on the temperature and strain history at conditions equivalent to the forming process. The combined approach to material characterisation highlights the pros and cons of each test method, the complementary nature of the data generated and the need to use both methods to have a complete data set for developing accurate material models and validated numerical simulations of thermoforming.

U2 - 10.1002/pen.25185

DO - 10.1002/pen.25185

M3 - Article

VL - 59

SP - 1853

EP - 1865

JO - Polymer Engineering and Science

T2 - Polymer Engineering and Science

JF - Polymer Engineering and Science

SN - 0032-3888

IS - 9

ER -