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Wood Science and Technology
Published in: Wood Science and Technology 1-3/2012

01-01-2012 | Original

Duration-of-load and creep effects in strand-based wood composite: experimental research

Authors: Jasmine B. Wang, Frank Lam, Ricardo O. Foschi

Published in: Wood Science and Technology | Issue 1-3/2012

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Abstract

The results from a duration-of-load and creep testing program on a thick strand-based composite product, using wood from forests attacked by the mountain pine beetle, are presented. The constant loading of experimental beams lasted for 1 year. The long-term deflection was monitored and recorded at a pre-set frequency. Time-to-failure data were also obtained for all the broken specimens. Ramp load test was carried out at different rates of loading to investigate its influence on short-term strength. Finally, the fatigue test was conducted with a triangular cyclic load history, and the strain history was obtained to elucidate the low-cycle fatigue behavior of the composite.
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Literature
ASTM D 6815-02a (2004) Evaluation of duration of load and creep effects of wood and wood-based products. West Conshohocken, PA. USA
Foschi RO, Barrett JD (1982) Load duration effects in western hemlock lumber. J Str Div ASCE 108(7):1494–1510
Foschi RO, For BR, Yao FZ (1993) RELAN: reliability analysis user’s manual. Civil Engineering Department, University of British Columbia, Vancouver, Canada, p 51
Kommers WJ (1943) The fatigue behavior of wood and plywood subjected to repeated and reversed bending stresses. US Forest Products Laboratory Report 1327. Madison, Wis
Kommers WJ (1944) The fatigue behavior of Douglas-fir and Sitka spruce subjected to reversed stresses superimposed on steady stresses. US Forest Products Laboratory Report 1327-A. Madison, Wis
Lam F (1992) Performance of laminated veneer wood plates in decking system. Ph.D. Thesis. Department of forestry, University of British Columbia
Lam F, Kadla JF, Smith G, Oudjehane A, Wang J (2008) FII-MDP-08-0066C-Development of thick MPB strand based wood composites. Annual Report for Forestry Innovation Investment Ltd
Metadata
Title
Duration-of-load and creep effects in strand-based wood composite: experimental research
Authors
Jasmine B. Wang
Frank Lam
Ricardo O. Foschi
Publication date
01-01-2012
Publisher
Springer-Verlag
Published in
Wood Science and Technology / Issue 1-3/2012
Print ISSN: 0043-7719
Electronic ISSN: 1432-5225
DOI
https://doi.org/10.1007/s00226-011-0402-6

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