Non-Destructive Evaluation of Plantation Eucalyptus nitens Logs and Recovered Samples to Analyse the Stiffness Property
Source abstract
Abstract
Eucalyptus nitens (H. Deane & Maiden) Maiden is a widely planted hardwood species in Australia, particularly in Tasmania, where it occupies approximately 168,000 ha. Although primarily managed for pulp production, the species is attracting interest for sawn and engineered wood applications. Previous evaluations of its properties have relied on destructive testing; however, non-destructive evaluation (NDE) techniques provide a viable alternative for industrial applications. This study examined the use of acoustic-based NDE to assess plantation-grown E. nitens logs sourced from two Tasmanian harvesting sites, focusing on the relationship between dynamic modulus of elasticity (DMOE), static MOE, and modulus of rupture (MOR) across radial positions from pith to bark. The results indicated that core samples exhibited stronger correlations with static MOE and MOR compared with middle and outer samples. DMOE consistently overestimated static MOE by 10.81% and 24.66% at the two sites, with variation evident across radial positions. These findings demonstrate the effectiveness of acoustic NDE for evaluating wood stiffness, highlighting the importance of sample location within logs.
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Research context
OpenAlex topics: Wood Treatment and Properties · Forest ecology and management · Tree Root and Stability Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Centre for Sustainable Architecture with Wood (CSAW), University of Tasmania, Launceston, TAS 7250, Australia
School of Engineering, College of Science and Engineering, University of Tasmania, Hobart, TAS 7001, Australia
Funding
Centre for Sustainable Architecture with Wood
References (33)
Show source-provided references
1. ABARES (2024). Australian Plantation Statistics 2022–23 Update.
2. Study of the relationship between flatwise and edgewise modulus of elasticity of plantation fibre-managed E. nitens sawn boards10.1016/j.conbuildmat.2022.128774 ↗
3. Visual stress grading of fibre-managed plantation Eucalypt timber for structural building applications10.1016/j.conbuildmat.2018.02.090 ↗
4. Balasso, M., Hunt, M., Jacobs, A., and O’reilly-Wapstra, J. (2021). Development of non-destructive-testing based selection and grading strategies for plantation Eucalyptus nitens sawn boards. Forests, 12.10.3390/f12030343 ↗
5. Walker, J.C. (2006). Primary Wood Processing: Principles and Practice, Springer Science & Business Media.
6. Rayner, T., Grams, W., and Scheinman, E. (2001, January 17–20). An automated log grading system based on computed tomography. Proceedings of the First International Precision Forestry Cooperative Symposium, Seattle, WA, USA.
7. Structural health monitoring of timber structures–Review of available methods and case studies10.1016/j.conbuildmat.2020.118528 ↗
8. Ultrasonic and thermal testing to non-destructively identify internal defects in plantation eucalypts10.1016/j.compag.2020.105396 ↗
9. Predicting structural timber grade-determining properties using acoustic and density measurements on young Sitka spruce trees and logs10.1515/hf-2018-0073 ↗
10. Using acoustic wave velocity to select fibre-managed plantation Eucalyptus nitens logs for laminated veneer lumber products10.2989/20702620.2018.1555945 ↗
11. Sorting Eucalyptus nitens plantation logs using acoustic wave velocity10.1080/00049158.2012.10676382 ↗
12. Differences in dynamic modulus of elasticity determined by three vibration methods and their relationship with static modulus of elasticity
13. Opazo-Vega, A., Rosales-Garcés, V., and Oyarzo-Vera, C. (2021). Non-destructive assessment of the dynamic elasticity modulus of eucalyptus nitens timber boards. Materials, 14.10.3390/ma14020269 ↗
14. Variations in acoustic velocity and density with age, and their interrelationships in radiata pine10.1016/j.foreco.2006.04.019 ↗
15. Genetic parameters for diameter, basic density, cellulose content and fibre properties for Eucalyptus nitens
16. Characterisation of wood quality of Eucalyptus nitens plantations and predictive models of density and stiffness with site and tree characteristics10.1016/j.foreco.2021.118992 ↗
17. Effects of thinning on the longitudinal and radial variation in wood properties of Eucalyptus nitens10.1093/forestry/cpac007 ↗
18. Temporal variation of microfibril angle in Eucalyptus nitens grown in different irrigation regimes10.1093/treephys/22.7.449 ↗
19. Nondestructive sampling of Eucalyptus globulus and E. nitens for wood properties. III. Predicted pulp yield using near infrared reflectance analysis10.1007/s002260100092 ↗
20. (2010). Characterisation of Structural Timber: Part 1. TestMethods (Standard No. AS/NZS 4063.1).
21. (2012). Timber—Methods of Test Moisture Content (Standard No. AS/NZS 1080.1).
22. Non-destructive ultrasonic testing method for determining bending strength properties of Gmelina wood (Gmelina arborea)
23. Ettelaei, A., Taoum, A., and Nolan, G. (2022). Assessment of different measurement methods/techniques in predicting modulus of elasticity of plantation Eucalyptus nitens timber for structural purposes. Forests, 13.10.3390/f13040607 ↗
24. Stiffness and checking of Eucalyptus nitens sawn boards: Genetic variation and potential for genetic improvement10.1007/s11295-010-0289-7 ↗
25. Vega Rivero, M. (2016). Characterisation of Eucalyptus nitens Plantations for Veneer Production. [Ph.D. Thesis, University of Tasmania].
26. An ultrasonic method for measuring the elastic constants of wood increment cores bored from living trees10.1016/0041-624X(83)90031-8 ↗
27. Impact of the direction of non-destructive test with respect to the annual growth rings of pine wood10.1016/j.proeng.2016.08.761 ↗
28. Predicting modulus of rupture of solid and finger-jointed tropical African hardwoods using longitudinal vibration
29. Relationship of stress wave-and static bending-determined properties of four northeastern hardwoods
30. Relationship among the dynamic and static elastic properties of air-dry Eucalyptus delegatensis R. Baker10.1007/s001070100198 ↗
31. Relationships between static and dynamic modulus of elasticity for a mixture of clear and decayed eucalypt wood10.1080/00049158.2003.10674911 ↗
32. Prediction of mechanical properties-modulus of rupture and modulus of elasticity-of five tropical species by nondestructive methods
33. De Oliveira, F.G.R., De Campos, J.A.O., Pletz, E., and Sales, A. (2002, January 19–21). Assessment of mechanical properties of wood using an ultrasonic technique. Proceedings of the 13th International Symposium on Non-Destructive Testing of Wood, Berkeley, CA, USA.