A new technique to measure the dynamic fracture toughness of solids
File(s)
Published version
Author(s)
Zhou, Junyi
Pellegrino, Antonio
Tagarielli, Vito
Type
Journal Article
Abstract
We propose and assess a new experimental technique to measure the fracture toughness of engineering materials and its sensitivity to strain rate. The proposed method is based on a ring expansion technique and it overcomes the limitations of current dynamic fracture tests, as it is not affected by transient stress wave propagation during loading and it results in spatially uniform remote stress and strain fields prior to fracture; the method is also suitable to achieve remote strain rates well in excess of 1000 s−1. We demonstrate the technique by measuring the plane-stress Mode I fracture toughness of PMMA specimens at remote strain rates ranging from 10−3 s−1 to 102 s−1. The experiments show an increase of the toughness of the material with increasing strain rate.
Date Issued
2023-10
Date Acceptance
2023-09-07
Citation
Polymer Testing, 2023, 127
ISSN
0142-9418
Publisher
Elsevier
Journal / Book Title
Polymer Testing
Volume
127
Copyright Statement
© 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.sciencedirect.com/science/article/pii/S0142941823002787
Publication Status
Published
Article Number
108198
Date Publish Online
2023-09-11