Abstract
In this study the orthotropic properties in the core layer of wood based panels are analyzed by means of the newly developed double cantilever I beam testing system. Four different wood based panels (i.e., OSB, particle board, particle board containing recycling chips and MDF) were tested in-plane, in longitudinal and lateral orientation. Specific fracture energy numbers yielded significant differences between the longitudinal and the lateral orientation for OSB, while the stress intensity factor analysis showed significant differences for OSB and particle board containing recycling particles.
Zusammenfassung
In dieser Studie wird das orthotropische Verhalten der Mittelschicht von Holzwerkstoffen unter Anwendung des neu entwickelten DCIB Verfahrens untersucht. Vier unterschiedliche Holzwerkstoffe (OSB, Spanplatte, Spanplatte mit recycelten Spänen und MDF) wurden in Plattenebene längs und quer zur Produktionsrichtung geprüft. Die spezifische Bruchenergie zeigte bei den OSB Proben signifikante Unterschiede zwischen den beiden Orientierungen. Unter Anwendung des Spannungsintensitätsfaktors konnten zudem bei OSB und Recyclingspanplatte in die beiden Orientierungen unterschieden werden.
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Acknowledgments
The authors gratefully acknowledge the financial support by the Competence Centre for Wood Composites and Wood Chemistry, Wood Kplus, Austria.
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Rathke, J., Sinn, G., Weigl, M. et al. Analysing orthotropy in the core layer of wood based panels by means of fracture mechanics. Eur. J. Wood Prod. 70, 851–856 (2012). https://doi.org/10.1007/s00107-012-0635-6
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DOI: https://doi.org/10.1007/s00107-012-0635-6