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Anisotropic tensile characterisation of Eucalyptus nitens timber above its fibre saturation point, and its application
Citation
Chen, X and Cheng, Y and Chan, A and Holloway , D and Nolan, G, Anisotropic tensile characterisation of Eucalyptus nitens timber above its fibre saturation point, and its application, Polymers, 14, (12) Article 2390. ISSN 2073-4360 (2022) [Refereed Article]
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Copyright Statement
© 2022 The authors. Licensee MDPI, Basel, Switzerland. This is an open access article under the terms and conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) license (https://creativecommons.org/licenses/by/4.0/).
DOI: doi:10.3390/polym14122390
Abstract
Plantation-grown Eucalyptus nitens (E. nitens) has been grown predominantly for the pulp and paper industry. In this study, the suitability of E. nitens as a structural material is examined using static tensile tests in a universal testing machine. The anisotropic tensile behaviour of 240 Eucalyptus nitens small clear wood samples with a diversity of grain angles was examined in both dry and wet conditions. The samples had a highly anisotropic tensile characterisation in the context of both a low moisture content (MC = 12%) and a high moisture content (MC > its fibre saturation point, FSP). The results showed that, in a high moisture content condition, the wood showed a lower failure strength and more ductility at all grain angles than in a low moisture content condition. The underlying failure mechanism of Eucalyptusnitens timber in tension was determined in detail from the perspective of the microstructure of wood cellulose polymer composites. The mean tensile failure strengths perpendicular and parallel to the fibre direction were, respectively, 5.6 and 91.6 MPa for the low MC and 3.8 and 62.1 MPa for the high MC condition. This research provides a basis for using E. nitens as a potential structural tensile member. The moisture modification factors of Eucalyptus timber at a mean level are higher than those of the traditional construction material, Pinus radiata, implying that E. nitens is promising as a material to be used for tensile members in water saturated conditions.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | eucalyptus, tension, wood anisotropy, failure envelope, fibre saturation point |
| Research Division: | Engineering |
| Research Group: | Civil engineering |
| Research Field: | Timber engineering |
| Objective Division: | Construction |
| Objective Group: | Construction materials performance and processes |
| Objective Field: | Timber materials |
| UTAS Author: | Cheng, Y (Ms Yingyao Cheng) |
| UTAS Author: | Chan, A (Professor Andrew Chan) |
| UTAS Author: | Holloway , D (Associate Professor Damien Holloway) |
| UTAS Author: | Nolan, G (Professor Gregory Nolan) |
| ID Code: | 154170 |
| Year Published: | 2022 |
| Deposited By: | Engineering |
| Deposited On: | 2022-11-05 |
| Last Modified: | 2023-01-10 |
| Downloads: | 3 View Download Statistics |
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