Failure behaviour in woven thermoplastic composites subjected to various deformation modes

Date

2021

Authors

Holmes, John
Vlandis, George
Stachurski, Zbigniew
Das, Raj
Compston, Paul

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

Woven thermoplastic composites are attractive to manufacturers due to their thermo-formability, but limitations in predicting complex failure behaviour still hinder widespread use. This work uses new specimen geometries and an associated apparatus to induce a selection of deformation modes and allows composite failure to be investigated under them. These specimens are tested with three different woven composites with varying matrix (polypropylene - PP, polycarbonate - PC), reinforcement (glass, PP), and weave (twill, satin). Strains captured with a Digital Image Correlation (DIC) system integrated with the hemispherical testing device show the strain evolution and deformation mode. Finite Element Analysis (FEA) demonstrates that friction, clamping, and bending have a minor effect on composite failure location and strain state. Experiments show significant differences in macroscale and mesoscale deformation and failure response due to composite constituents and weave architectures. A maximum fibre strain criterion is shown to be effective for fibre-reinforced composites across a range of deformation modes.

Description

Keywords

Biaxial testing, Digital Image Correlation (DIC), Finite Element Analysis (FEA), Hemispherical testing, Woven thermoplastic composite

Citation

Source

Composites Part A: Applied Science and Manufacturing

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/j.compositesa.2021.106410

Restricted until

2099-12-31