An experimental and numerical study of moisture transport and moisture-induced strain in fast-grown Sitka spruce

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dc.creatorConan O’Ceallaigh
dc.creatorKarol Sikora
dc.creatorDaniel McPolin
dc.creatorAnnette M. Harte
dc.date2019
dc.date.accessioned2026-07-07T04:37:14Z
dc.descriptionThe use of fast-grown timber in the manufacture of engineered wood products is increasing; however, the fast growth rate results in a low-density timber that is susceptible to significant swelling and shrinkage deformations under changing moisture content. The current study focuses on the characterisation of the moisture diffusion and swelling/shrinkage of fast-grown Sitka spruce and the prediction of the moisture-induced strain development in Sitka spruce glulam beams under variable humidity cycles. Moisture content evolution and swelling/shrinkage coefficients were measured and the longitudinal swelling/shrinkage was found to be significantly greater than for slow-grown timber. Sitka spruce glued-laminated beams were subjected to controlled relative humidity cycling for 52 weeks and the moisture distribution and moisture-induced strains were measured continuously. Coupled moisture-displacement numerical models, incorporating the experimentally measured material parameters were developed. The effect of the glue-line was found to have an insignificant effect on moisture transport, however, the material orientation greatly influenced the predicted moisture-induced strain. Accurately mapping the material orientation produced significantly better predictions of the experimental results over the 52-week period.
dc.formatapplication/pdf
dc.identifier0717-3644
dc.identifierhttps://www.redalyc.org/articulo.oa?id=48559143005
dc.identifierhttps://www.redalyc.org/journal/485/48559143005/
dc.identifierhttps://www.redalyc.org/journal/485/48559143005/html/
dc.identifierhttps://www.redalyc.org/journal/485/48559143005/48559143005.epub
dc.identifierhttps://www.redalyc.org/journal/485/48559143005/movil
dc.identifier.urihttp://hdl.handle.net/123456789/467147
dc.languageen
dc.publisherUniversidad del Bío Bío
dc.relationhttp://www.redalyc.org/revista.oa?id=485
dc.rightsMaderas. Ciencia y Tecnología
dc.sourceMaderas. Ciencia y Tecnología (Chile) Num.1 Vol.21
dc.subjectAgrociencias
dc.titleAn experimental and numerical study of moisture transport and moisture-induced strain in fast-grown Sitka spruce
dc.typeartículo científico

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Maderas. Ciencia y Tecnología - Universidad del Bío Bío