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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) pp. 1-14. ISSN 2073-4360 (2022) [Refereed Article]


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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:Structural engineering
Objective Division:Construction
Objective Group:Construction design
Objective Field:Civil construction design
UTAS Author:Cheng, Y (Ms Yingyao Cheng)
UTAS Author:Chan, A (Professor Andrew Chan)
UTAS Author:Holloway, D (Mr Donald Holloway)
UTAS Author:Nolan, G (Professor Gregory Nolan)
ID Code:150828
Year Published:2022
Deposited By:Engineering
Deposited On:2022-07-01
Last Modified:2022-09-01
Downloads:0

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