MSEC 2017 for LUPIN.pdf (4.49 MB)
Assessing stiffness of nanofibres in bacterial cellulose hydrogels: Numerical-experimental framework
journal contribution
posted on 2017-06-29, 11:12 authored by Xing Gao, Emrah Sozumert, Zhijun Shi, Guang Yang, Vadim SilberschmidtVadim SilberschmidtThis work presents a numerical-experimental framework for assessment of stiffness of nanofibres in a fibrous hydrogel – bacterial cellulose (BC) hydrogel – based on a combination of in-aqua mechanical testing, microstructural analysis and finite-element (FE) modelling. Fibrous hydrogels attracted growing interest as potential replacements to some tissues. To assess their applicability, a comprehensive understanding of their mechanical response under relevant conditions is desirable; a lack of such knowledge is mainly due to changes at microscale caused by deformation that are hard to evaluate in-situ because of the dimensions of nanofibres and aqueous environment. So, discontinuous FE simulations could provide a feasible solution; thus, properties of nanofibres could be characterised with a good accuracy. An alternative – direct tests with commercial testing systems – is cumbersome at best. Hence, in this work, a numerical-experimental framework with advantages of convenience and relative easiness in implementation is suggested to determine the stiffness of BC nanofibres. The obtained magnitudes of 53.7–64.9 GPa were assessed by calibrating modelling results with the original experimental data.
Funding
The authors would like to acknowledge the 7th European Community Framework Programme for financial support through a Marie Curie International Research Staff Exchange Scheme (IRSES) Project entitled “Micro-Multi-Material Manufacture to Enable Multifunctional Miniaturised Devices (M6)” (Grant No. PIRSES-GA-2010-269113). Additional support from China-European Union Technology Cooperation Programme (Grant No. 1110) is also acknowledged.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Materials Science and Engineering CVolume
77Pages
9 - 18Citation
GAO, X. ... et al, 2017. Assessing stiffness of nanofibres in bacterial cellulose hydrogels: Numerical-experimental framework. Materials Science and Engineering C, 77, pp. 9-18.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-03-25Publication date
2017Notes
This paper was published in the journal Materials Science and Engineering C and the definitive published version is available at http://dx.doi.org/10.1016/j.msec.2017.03.231.ISSN
0928-4931Publisher version
Language
- en