- Original Article
- Published:
Effect of compressive load on the dimensional changes of the Japanese larch dried in a radio-frequency/vacuum drier
Journal of Wood Science volume 54, pages 451–455 (2008)
Abstract
This study investigated the effect of a compressive load of 0.092 MPa on the dimensional changes of Japanese larch in a humidity chamber after continuous radio-frequency/vacuum drying. The dimensional changes in the loading directions were significantly increased while those perpendicular to the loading directions were decreased. The shrinkages showed higher values in continuous drying than in intermittent drying. For the specimens loaded on their tangential sections, the radial shrinkages were even higher than the tangential shrinkages; thus, the tangential/radial shrinkage ratio was decreased by 0.27. The transverse hygroscopicity was reduced for the specimens loaded on their cross sections, but increased for the specimens loaded on their tangential sections.
References
Stevens WC (1963) The transverse shrinkage of wood. Forest Prod J 13:386–389
Dinwoodie JM (2000) Timber — its nature and behavior. E&FN Spon. London, pp 58, 130–132
Gibson EJ (1965) Creep of wood: role of water and effect of a changing moisture content. Nature 206:213–215
Choong ET (1969) Effect of extractives on shrinkage and other hygroscopic properties of ten southern pine woods. Wood Fiber Sci 1:124–133
Skaar C (1988) Wood-water relations. Springer, Berlin Heidelberg New York, pp 153–159, 283
Zhou YG, Fushitani M, Kubo T (2000) Effect of stress level on bending creep behavior of wood during cyclic moisture changes. Wood Fiber Sci 32:20–28
Lee AWC, Harris RA (1984) Properties of red oak lumber dried by a radio-frequency/vacuum process and dehumidification process. Forest Prod J 34:56–58
Taniquchi Y, Nishio S (1991) High frequency power-vacuum drying of wood. IV. Comparison of physical and mechanical properties of lumber dried by several drying methods. J Jpn Wood Res Soc 37:405–414
Lee NH, Jung HS (2000) Comparison of shrinkage, checking, and absorbed energy in impact bending of Korean ash squares dried by a radio-frequency/vacuum process and a conventional kiln. Forest Prod J 50:69–72
Li C, Lee NH (2004) Effect of compressive load on shrinkage of larch blocks under radio-frequency/vacuum heating. Wood Fiber Sci 36:9–16
Li C, Lee NH (2008) Effect of compressive load on the moisture content of oak blocks during radio-frequency/vacuum drying. Forest Prod J 58:34–38
Hoffmeyer P (1993) Non-linear creep caused by slip plane formation. Wood Sci Technol 27:326–327
Wu Q, Milota MR (1995) Rheological behavior of Douglas-fir perpendicular to the grain at elevated temperatures. Wood Fiber Sci 27:288–289
Naderi N, Hernandez RE (1997) Effect of re-wetting treatment on the dimensional changes of sugar maple wood. Wood Fiber Sci 29:340–344
Chafe SC (1995) Predrying and continuous and intermittent drying in boards of Eucalyptus regnans F. Muell. II. Changes in shrinkage and moisture content during drying. Holzforschung 49:234–238
Tang YF, Simpson WT (1990) Perpendicular-to-grain rheological behavior of loblolly pine in press drying. Wood Fiber Sci 22: 326–342
Tabarsa T, Chui YH (2000) Stress-strain response of wood under radial compression. Part I. Test method and influences of cellular properties. Wood Fiber Sci 32:144–152
Burgert I, Okuyama T, Yamamoto H (2003) Generation of radial growth stresses in the big rays of konara oak trees. J Wood Sci 49:131–134
Kunesh RH (1961) The inelastic behavior of wood. A new concept for improved panel forming process. Forest Prod J 11:395–406
Ugolev BN (1976) General laws of wood deformation and rheological proportions of hardwood. Wood Sci Technol 10: 169–181
Shiraishi N, Kajita H, Norimoto M (1993) Recent research on wood and wood-based materials. Kyoto University, Japan, pp 141–145
Mãrath E (1932) Studien über die hygroskopischen Eigenschaften und die Härte der Hõlzer. Mitt Holzforsch Darmstadt
Pentoney RE (1953) Mechanisms affecting tangential and radial shrinkage. J Forest Prod Res Soc 32:27–32
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, C., Lee, NH. Effect of compressive load on the dimensional changes of the Japanese larch dried in a radio-frequency/vacuum drier. J Wood Sci 54, 451–455 (2008). https://doi.org/10.1007/s10086-008-0979-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10086-008-0979-z