Koczan, Grzegorz Karwat, Zbigniew Kozakiewicz, Paweł
Published in
Journal of Wood Science
This work concerns basic research on the concept of wood hardness in a sense similar to Brinell or in the modified sense of Monnin. The experimental part of this article is based on research carried out on beech wood with six indenters: three ball indenters of 10, 15 and 30 mm and three cylindrical indenters of 10, 15 and 30 mm. On the basis of mea...
Kubojima, Yoshitaka Sonoda, Satomi Kato, Hideo
Published in
Journal of Wood Science
This study examines a simple estimation method for the measurement of the mass of an on-site log through a vibration test. In this method, rather than the log itself, a cut end portion is weighed. For this purpose, the vibration method with additional mass (VAM) was applied to Sitka spruce (Picea sitchensis Carr.) circular truncated cones (model lo...
Murata, Koji Nakano, Mao Miyazaki, Kaoru Yamada, Norihiko Yokoo, Yoshihiro Yokoo, Kuniharu Umemura, Kenji Nakamura, Masashi
Published in
Journal of Wood Science
Over the past few decades, the sustainable forest area in China has increased remarkably, with 2400 million cubic meters of eucalyptus produced in 2018 in Guangxi which is the largest plantation area in China. In this study, the effect of alternating lamination using soft poplar veneers and hard eucalyptus veneers, on the mechanical properties of l...
Han, Yidan Chun, Qing Jin, Hui
Published in
Journal of Wood Science
Traditional Chinese timber buildings are lightweight, flexible, and quite vulnerable to wind. This paper aims to present a methodology for evaluating the wind-induced vibration performance of early Chinese hall-style timber buildings based on numerical simulations. First, the architectural and structural characteristics of early Chinese hall-style ...
Wang, Jiawei Minami, Eiji Kawamoto, Haruo
Published in
Journal of Wood Science
The thermal reactivities of cellulose and hemicellulose are significantly different in cell walls when compared with isolated components and differ in Japanese cedar (softwood) and Japanese beech (hardwood). Uronic acid bound to xylan promotes the thermal degradation of cellulose and hemicellulose, and its effect is different depending on the form ...
Zhou, Ling Liu, Qing Ma, Shengqiang Han, Xia
Published in
Journal of Wood Science
The column, which is the vertical main structural part of the building, bears the force transmitted from the upper beam and slab and is a crucial part of the structure. In this study, the columns with a rectangular section cut from poplar were reinforced by basalt fiber-reinforced polymer (BFRP) strips with four different reinforced configurations....
Sekino, Noboru Jiang, Zhuoqiu
Published in
Journal of Wood Science
To understand the fuel characteristics of a waste shiitake mushroom bed derived from hardwood chips, the moisture content at the time of disposal and after 1 month, as well as its calorific value, ash content, and elemental composition, were investigated. The moisture content on a wet basis (MCw) was 78% at the time of disposal and was as high as 6...
Suhara, Hiroto
Published in
Journal of Wood Science
Termites are ecologically significant in positive and negative ways; their role in breaking down debris greatly benefits forest environments, but this activity renders them a pest in domestic environments. This study examines the effect of nutrition on the feeding preference of termite Coptotermes formosanus Shiraki. Among 11 nutrition options test...
Zhao, Zhongyuan Wu, Di Huang, Caoxing Zhang, Min Umemura, Kenji Yong, Qiang
Published in
Journal of Wood Science
In this study, further research on an enzymatic hydrolysate-ammonium dihydrogen phosphate (EHADP) adhesive was carried out. Appropriate hot pressing conditions were clarified by measuring the bond strength of three-ply plywood bonded with EHADP adhesive, and the results indicated that the appropriate fabricate conditions were 170 °C and 5 min. The ...
Liu, Yingyang Wang, Yixuan Zhang, Yiming Chen, Minghui Nie, Xizhe
Published in
Journal of Wood Science
To study the force–displacement relations of bolted timber joints with slotted-in steel plates, we performed a monotonic loading test parallel to the grain on 24 specimens. The influences of the bolt diameter, timber thickness, and their ratio were considered. As shown by the test results, the joints had a high deformation capacity and experienced ...