THE EFFECT OF DENSIFICATION ON DENSITY AND BENDING STRENGTH OF THERMALLY TREATED BLACK POPLAR (Populus nigra) WOOD
Yükleniyor...
Dosyalar
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gazi University and Pozna University
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The aim of this study was to determine the effect of thermo-mechanical densification on density and bending strength of thermal treated black poplar wood specimens. The wood specimens were thermally treated at four different temperatures (140 °C, 160 °C, 180 °C and 200 °C) for 7 and 9 hours. The specimens were then densified at 150 °C with compression ratios of 20% and 40%. Air-dry density and static bending strength tests were performed on these wood specimens. According to the results of the tests, it was observed that thermal treatments negatively affected the density and bending strength values of the specimens. Compared to control (untreated) specimens, the density and bending strength values of the specimens decreased by up to 8.2% and 37%, respectively, due to the increase in temperature and time of the thermal treatment. On the other hand, the densification process positively affected the determined properties of the wood specimens. Higher values were obtained at high compression ratio (40%). After densification, the density and bending strength values of the wood specimens increased up to 42% and 41% respectively. According to the results, it may be suggested to apply a densification process in order to increase the density and strength in thermal treated specimens.
Açıklama
Anahtar Kelimeler
Wood material, Thermal treatment, Densification, Bending strength
Kaynak
The XXIXth International Conference Research for Furniture Industry
