A1 Journal article (refereed)
Effective elastic properties of biocomposites using 3D computational homogenization and X-ray microcomputed tomography (2021)
Karakoç, A., Miettinen, A., Virkajarvi, J., & Joffe, R. (2021). Effective elastic properties of biocomposites using 3D computational homogenization and X-ray microcomputed tomography. Composite Structures, 273, Article 114302. https://doi.org/10.1016/j.compstruct.2021.114302
JYU authors or editors
Publication details
All authors or editors: Karakoç, Alp; Miettinen, Arttu; Virkajarvi, Jussi; Joffe, Roberts
Journal or series: Composite Structures
ISSN: 0263-8223
eISSN: 1879-1085
Publication year: 2021
Volume: 273
Article number: 114302
Publisher: Elsevier BV
Publication country: United Kingdom
Publication language: English
DOI: https://doi.org/10.1016/j.compstruct.2021.114302
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/78409
Abstract
A 3D computational homogenization method based on X-ray microcomputed tomography (μCT) was proposed and implemented to investigate how the fiber weight fraction, orthotropy and orientation distribution affect the effective elastic properties of regenerated cellulose fiber-polylactic acid (PLA) biocomposites. Three-dimensional microstructures reconstructed by means of the X-ray μCT were used as the representative volume elements (RVEs) and incorporated into the finite element solver within the computational homogenization framework. The present method used Euclidean bipartite matching technique so as to eliminate the generation of artificial periodic boundaries and use the in-situ solution domains. In addition, a reconstruction algorithm enabled finding the volume and surface descriptions for each individual fiber in a semi-automatic manner, aiming at reducing the time and labor required for fiber labeling. A case study was presented, through which the method was compared and validated with the experimental investigations. The present study is thus believed to give a precise picture of microstructural heterogeneities for biocomposites of complex fiber networks and to provide an insight into the influences of the individual fibers and their networks on the effective elastic properties.
Keywords: composites; fibres; tomography; x-ray examination; x-ray technology; Three-dimensional imaging; imaging; microstructures; materials research
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2021
JUFO rating: 2