Abstract
As a good building material, structural Finger-jointed (FJ) lumber are used mainly in structural applications. The paper evaluated strength properties of structural FJ Chinese fir lumber. Lumber was sawn from the logs following a pattern typically used in China to maximize the volume of recovered sawn timbers. After kiln-drying, the rough-sawed lumber was planned to 4.5 cm thick, 9.0 cm wide and 100cm long. The lumber pieces were assigned to two groups according to their dynamical MOE. FJ lumber was produced by cutting a series of sloping fingers on the end of the wood pieces to be joined and interlocking the two pieces by MDI glue. The FJ lumber was nondestructively tested using edge-wise bending, longitudinal and transversal vibration methods respectively. After three methods, tensile and bending strengths of FJ lumber were tested. The results showed that machine grading can help the finger joint played more active role, and dynamical MOE was a good indicator of the static MOE.
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References
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© 2012 Springer-Verlag Berlin Heidelberg
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Zhou, H. (2012). Strength Properties of Structural FJ Chinese Fir Lumber. In: Deng, W. (eds) Future Control and Automation. Lecture Notes in Electrical Engineering, vol 173. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31003-4_29
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DOI: https://doi.org/10.1007/978-3-642-31003-4_29
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31002-7
Online ISBN: 978-3-642-31003-4
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