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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Elastic strain at semi-isostatic compression of Scots pine (Pinus sylvestris)

Journal of Wood Science volume 51, pages 401–404 (2005)Cite this article

Abstract

Quarter-sawn and plain-sawn specimens of Scots pine were semi-isostatically compressed at 5, 15, 50, and 140 MPa in a Quintus press. Elastic strain was measured using a telescope device that was pushed together when wood was compressed and remained in this position at release of pressure. Delayed elastic and plastic strains were assessed through repeated callipering during 5 years after densification. At 140 MPa, wood reached an almost compact structure (ρ ≈ 1450 kg/m3) but as a result of elastic springback the density decreased to just below 1000 kg/m3. At 140 MPa, the elastic and delayed elastic strains were 14.6% and 1.8%, respectively, in quarter-sawn specimens, and were 13.1% and 0.8%, respectively, in plain-sawn specimens. The higher elastic strains in quarter-sawn specimens can be attributed to elastic springback in the tangentially deformed latewood bands.

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Authors and Affiliations

  1. Dalarna University, SE-781 88, Borlänge, Sweden

    Jonas Blomberg

  2. Luleå University of Technology, Skellefteå Campus, Skeria 3, SE-931 87, Skellefteå, Sweden

    Jonas Blomberg

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  1. Jonas Blomberg
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Correspondence to Jonas Blomberg.

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Blomberg, J. Elastic strain at semi-isostatic compression of Scots pine (Pinus sylvestris). J Wood Sci 51, 401–404 (2005). https://doi.org/10.1007/s10086-004-0666-7

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  • DOI: https://doi.org/10.1007/s10086-004-0666-7

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