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Comparison of European standard EN 310 and EN 789 in determining the bending strength and modulus of elasticity of red seraya (Shorea spp.) plywood panel: experimental and finite element analysis

Vergleich der Biegefestigkeit und des Elastizitätsmoduls von Sperrholz aus Rotem Seraya (Shorea spp.) bestimmt nach den europäischen Normen EN 310 und EN 789: Experimentelle Untersuchung und Finite-Elemente-Analyse

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Abstract

The characteristic bending strength (MOR) and mean modulus of elasticity (MOE) of red seraya (Shorea spp.) plywood was determined using European Standard bending tests EN 310 and EN 789. The experiment found that the MOR of EN310 was higher whereas MOE were lower than those obtained from EN 789. The study also found that the choice of wood species influenced the correlation of MOR and MOE obtained by EN 310 and EN 789. Finite element (FE) model was proposed to predict MOR and MOE values. The FE analysis method showed satisfactory agreement with the experimental results, especially for EN 789. The R2 values for EN 789 attempted through linear regressions range from 0.96 to 0.99. Nevertheless, it was noted that the FE models in this study had put some limitations on the prediction.

Zusammenfassung

Die charakteristische Biegefestigkeit (MOR) und der Elastizitätsmodul (MOE) von rotem Seraya (Shorea spp.) Sperrholz wurden mittels Biegeversuchen nach EN 310 und EN 789 bestimmt. Die Versuche nach EN 310 ergaben eine höhere Biegefestigkeit, jedoch einen niedrigeren E-Modul als nach EN 789. Die Ergebnisse weisen darauf hin, dass die Holzart einen Einfluss auf die Korrelation der nach EN 310 und EN 789 bestimmten Biegefestigkeits- und E-Modul-Werte hat. Weiterhin wurden die Biegefestigkeit und der Elastizitätsmodul über ein Finite-Element-Modell (FE) bestimmt. Die Ergebnisse der FE-Analyse stimmten mit den Versuchsergebnissen, insbesondere den nach EN 789 bestimmten gut überein. Das mittels linearer Regression ermittelte Bestimmtheitsmaß R² lag zwischen 0,96 und 0,99. Nichtsdestotrotz wurde erkannt, dass die in dieser Studie verwendeten FE-Modelle noch verbesserungsbedürftig sind.

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Authors and Affiliations

  1. Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia

    Tsen Shuk Fun & Mohd Zamin Jumaat

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  1. Tsen Shuk Fun
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  2. Mohd Zamin Jumaat
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Correspondence to Tsen Shuk Fun.

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Fun, T.S., Jumaat, M.Z. Comparison of European standard EN 310 and EN 789 in determining the bending strength and modulus of elasticity of red seraya (Shorea spp.) plywood panel: experimental and finite element analysis. Eur. J. Wood Prod. 71, 483–490 (2013). https://doi.org/10.1007/s00107-013-0702-7

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  • DOI: https://doi.org/10.1007/s00107-013-0702-7

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