X-ray computed tomography study of compressive failure in a notched unidirectional glass fiber-reinforced composites

Xuefeng Li; Jingran Ge; Binbin Zhang; Xiaodong Liu; Long Wang; Shuo Liu; Jun Liang

Polymer Testing (Jan 2024)

X-ray computed tomography study of compressive failure in a notched unidirectional glass fiber-reinforced composites

Xuefeng Li,
Jingran Ge,
Binbin Zhang,
Xiaodong Liu,
Long Wang,
Shuo Liu,
Jun Liang

Affiliations

Xuefeng Li: Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China
Jingran Ge: Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China; Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author. Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China.
Binbin Zhang: Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China
Xiaodong Liu: Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author.
Long Wang: Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing Institute of Structure and Environment Engineering, Beijing, 100076, China
Shuo Liu: Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China
Jun Liang: Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China; Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, China; State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China

Journal volume & issue: Vol. 130
p. 108307

Abstract

Read online

An experimental study on the axial compressive failure of a notched unidirectional (UD) glass fiber-reinforced composites has been performed to better understand the failure mechanisms in three dimensions (3D). A sequence of failure initiation and propagation has been monitored based on X-ray computed tomography (CT) images of the sample during failure. The CT images have shown that fiber kinking failure is the main failure mechanism, and there are two different types of kink bands, classified as type 1 and type 2 by final geometric form. The type 1 kink band, which has an X shape, extends outward from the notch along the width direction before finally creating a shear type 2 kink band at a distance from the notch. The novelty of this work involves observing the nucleation and propagation of fiber kink bands in three-dimensional space, as well as defining and quantifying kink band variables.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

About the journal

Abstract

Keywords