caa a22 4500 463248007 CHVBK 20180405153331.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10086-006-0828-x doi (NATIONALLICENCE)springer-10.1007/s10086-006-0828-x Vibrational properties of wetwood of todomatsu ( Abies sachalinensis ) at high temperature [Elektronische Daten] [Hisashi Ohsaki, Yoshitaka Kubojima, Mario Tonosaki, Masamitsu Ohta] The object of this study was to understand precisely the drying characteristics of wetwood of todomatsu (Abies sachalinensis Mast.). For this purpose, the vibrational properties of wetwood of todomatsu at high temperature were compared with those of normal parts that had lower green moisture content than the wetwood. Specimens were cut respectively from the wetwood and normal parts, and matched in the radial direction. The specimens and the measuring systems were placed in an electric drying oven and free-free vibration tests were conducted in the oven under absolutely dry conditions. The wetwood and the normal parts were tested separately. The temperature was raised from room temperature to 200°C and then lowered to 50°C in steps of 25°C. The specific Young's modulus decreased with an increase in temperature during the heating process while it increased with the decreasing temperature during the cooling process. There was no significant difference in the specific Young's modulus between the wetwood and the normal part at all tested temperatures. The loss tangent took a minimum value at about 100°C in both the heating and cooling processes. There was no significant difference in the loss tangent between the wetwood and the normal part. Thus, the elastic and viscoelastic behaviors of the wetwood appear to be similar to those of the normal part in the temperature range of an actual kiln-drying process. The Japan Wood Research Society, 2006 Wetwood nationallicence Japanese fir nationallicence Vibrational properties nationallicence High-temperature drying nationallicence Ohsaki Hisashi Hokkaido Forest Products Research Institute, 1-10 Nishikagura, 071-0198, Asahikawa, Japan aut Kubojima Yoshitaka Forestry and Forest Products Research Institute, Tsukuba Norin Kenkyu Danchi-nai, 305-8687, Ibaraki, Japan aut Tonosaki Mario Forestry and Forest Products Research Institute, Tsukuba Norin Kenkyu Danchi-nai, 305-8687, Ibaraki, Japan aut Ohta Masamitsu Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657, Tokyo, Japan aut Journal of Wood Science Springer-Verlag 53/2(2007-04-01), 134-138 1435-0211 53:2<134 2007 53 10086 https://doi.org/10.1007/s10086-006-0828-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0828-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ohsaki Hisashi Hokkaido Forest Products Research Institute, 1-10 Nishikagura, 071-0198, Asahikawa, Japan aut NATIONALLICENCE 700 1- Kubojima Yoshitaka Forestry and Forest Products Research Institute, Tsukuba Norin Kenkyu Danchi-nai, 305-8687, Ibaraki, Japan aut NATIONALLICENCE 700 1- Tonosaki Mario Forestry and Forest Products Research Institute, Tsukuba Norin Kenkyu Danchi-nai, 305-8687, Ibaraki, Japan aut NATIONALLICENCE 700 1- Ohta Masamitsu Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/2(2007-04-01), 134-138 1435-0211 53:2<134 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer