MICROSCOPIC INVESTIGATION OF DEFECTS IN THERMALLY COMPRESSED POPLAR WOOD PANELS
Yükleniyor...
Dosyalar
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Univ Bio-Bio
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The combined effects of temperature and compression on the microstructure of solid-wood panels produced by Aspen (Populus tremula) wood were evaluated. Thermal compression was applied on aspen wood to increase the density for improving its physical and mechanical properties. The solid wood panels with dimensions of 100 mm by 500 mm by 25 mm were hot-pressed by using a laboratory hot press at a temperature of either 150 degrees C or 170 degrees C and pressure of either 1MPa or 2 MPa, respectively, for 45 min. Changes in the microstructure were detected by using a light microscope. The microscopic investigations revealed that the wood exhibited much defects in the process conditions of 170 degrees C / 2 MPa, and the distribution of defects were not uniform in the growth rings of the wood specimens in the two treatment groups. All defects in cell structure were quite distinct in the beginning and the last parts of the growth rings and the largest damages occurred in the fibers and vessels for the two process conditions. The results indicate that growth ring structure, vessel porosity, and cell wall thickness have a strong effect on wood behavior in various process conditions.
Açıklama
TUNCER, Fatma Digdem/0000-0002-6588-4789; Bakir, Davut/0000-0001-5480-1872
WOS: 000396793400011
WOS: 000396793400011
Anahtar Kelimeler
Cellular failure, poplar wood, thermally compressed wood, wood densification, wood microstructure
Kaynak
Maderas-Ciencia Y Tecnologia
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
18
Sayı
2
