High strain rate radial compression of Norway spruce earlywood and latewood

Carolina S. Moilanen; Tomas Björkqvist; Birgitta A. Engberg; Lauri I.  Salminen; Pentti Saarenrinne

doi:10.1007/s10570-015-0826-5

High strain rate radial compression of Norway spruce earlywood and latewood

Carolina S. Moilanen, Tomas Björkqvist, Birgitta A. Engberg, Lauri I. Salminen, Pentti Saarenrinne

Research output: Contribution to journal › Article › Scientific › peer-review

9 Citations (Scopus)

Abstract

The mechanical properties of Norway spruce were studied and a compression model for mechanical pulping was developed. The split-Hopkinson pressure bar technique was combined with high-speed photography to analyse local radial compression. Data analysis focussed on the differences between mechanical properties of earlywood and latewood. Measurements were conducted at both room temperature and 135 °C. The effect of pre-fatigue treatment was also studied. A simple material model was defined linearly in parts and fitted to the measurement data to quantify the differences. New results were found on the differences in inelastic behaviour of earlywood and latewood at large deformations. In addition, other results were in line with previously published results.

Original language	English
Pages (from-to)	873-889
Number of pages	17
Journal	Cellulose
Volume	23
Issue number	1
Early online date	26 Nov 2015
DOIs	https://doi.org/10.1007/s10570-015-0826-5
Publication status	Published - 1 Feb 2016
Publication type	A1 Journal article-refereed

Keywords

Norway spruce
radial compressio
split-Hopkinson pressure bar
high speed photography
local strain

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10.1007/s10570-015-0826-5

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abstract = "The mechanical properties of Norway spruce were studied and a compression model for mechanical pulping was developed. The split-Hopkinson pressure bar technique was combined with high-speed photography to analyse local radial compression. Data analysis focussed on the differences between mechanical properties of earlywood and latewood. Measurements were conducted at both room temperature and 135 °C. The effect of pre-fatigue treatment was also studied. A simple material model was defined linearly in parts and fitted to the measurement data to quantify the differences. New results were found on the differences in inelastic behaviour of earlywood and latewood at large deformations. In addition, other results were in line with previously published results.",

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AU - Moilanen, Carolina S.

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AU - Engberg, Birgitta A.

AU - Salminen, Lauri I.

AU - Saarenrinne, Pentti

N1 - ORG=mei,0.7 ORG=ase,0.3

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N2 - The mechanical properties of Norway spruce were studied and a compression model for mechanical pulping was developed. The split-Hopkinson pressure bar technique was combined with high-speed photography to analyse local radial compression. Data analysis focussed on the differences between mechanical properties of earlywood and latewood. Measurements were conducted at both room temperature and 135 °C. The effect of pre-fatigue treatment was also studied. A simple material model was defined linearly in parts and fitted to the measurement data to quantify the differences. New results were found on the differences in inelastic behaviour of earlywood and latewood at large deformations. In addition, other results were in line with previously published results.

AB - The mechanical properties of Norway spruce were studied and a compression model for mechanical pulping was developed. The split-Hopkinson pressure bar technique was combined with high-speed photography to analyse local radial compression. Data analysis focussed on the differences between mechanical properties of earlywood and latewood. Measurements were conducted at both room temperature and 135 °C. The effect of pre-fatigue treatment was also studied. A simple material model was defined linearly in parts and fitted to the measurement data to quantify the differences. New results were found on the differences in inelastic behaviour of earlywood and latewood at large deformations. In addition, other results were in line with previously published results.

KW - Norway spruce

KW - radial compressio

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KW - local strain

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JO - Cellulose

JF - Cellulose

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High strain rate radial compression of Norway spruce earlywood and latewood

Abstract

Keywords

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