Results 251 to 260 of about 1,106,534 (306)

Historical wood – structure and properties

Journal of Cultural Heritage, 2012
Abstract To understand what has happened to a historic wooden object, it is important to understand the wood structure and the chemistry of the original wood as well as the structure and chemistry of the historic wood. With this information, it is possible to understand the degradation that has occurred over time.
Nilsson, Thomas, Rowell, Roger
exaly   +2 more sources

Wood Variation and Wood Properties

1989
Wood, a most useful substance, varies greatly. Wood properties are changing throughout the world (Zobel et al 1983) and the magnitude and causes of the changes must be known. The importance of wood properties to the final product is becoming better known; one example is the relationship of the morphology of loblolly pine (Pinus taeda) tracheids and the
Bruce J. Zobel, Johannes P. van Buijtenen   +1 more
openaire   +1 more source

Fatigue properties of wood and wood composites

International Journal of Fracture, 1980
An overview of the state of fatigue research for wood and wood products is presented. The extreme lack of a satisfactory data base and the persistent neglect of fatigue characteristics in wood material design is emphasized. Some theoretical considerations are presented to point out the difficulties met when attempting to model the behavior of wood ...
openaire   +1 more source

Fracture Properties of Wood and Wood Composites

Advanced Engineering Materials, 2009
Wood has a complex hierarchical structure and is a kind of polymeric composite with elongated cells in an amorphous matrix. Therefore, fracturing is a complicated process that is influenced by loading mode and direction, humidity, etc. Standard linear-elastic fracture mechanics methods mostly cannot sufficiently quantify fracturing, and combining ...
openaire   +1 more source

The Vibrational Properties of Wood. II

Journal of the Physical Society of Japan, 1950
When the moisture content is reduced from the air-dried state, the internal friction of wood increases and the peak in tan δ-frequency curve shifts to the lower frequency. The Young's modulus and tan δ decreases and peak of tan δ shifts to the higher frequency with the increase of temperature at the absolutely dried state.
openaire   +1 more source

Ultrasonic Properties in Woods

Japanese Journal of Applied Physics, 1988
Ultrasonic velocity and absorption were observed at 1∼4 MHz in nine different kinds of woods. They showed a strong anisotropic feature: the direction of growth (L) has the fastest velocity and smallest absorption; the direction perpendicular to annual rings (R) has the second; and the direction tangential to them (T) has the slowest velocity and ...
Harue Sakai, Kenshiro Takagi, Akiko Minamisawa   +2 more
openaire   +1 more source

Property Improvements of Wood and Wood-Plastic Composites

2021
Several factors such as type of wood species e.g. soft wood, hard wood, wood flour (WF) particle size, particle shape, particle aspect ratio, type of polymer matrices, dispersion of wood flour in polymer matrix as well as interfacial interaction i.e.
openaire   +1 more source

WOOD PROPERTIES AND EFFECT OF WOOD PROPERTIES ON THE WOOD FINISHING

2011
Wood is basic raw material for furniture and joinery industries with wood structures. Wood is a biological material that has widely different properties depending on species, geographic area where the tree grew, the growth condition, size of the tree at harvest, sawing, and other manufacturing processes. Wood properties have been characterized 
MALKOÇOĞLU, Abdulkadir, ÖZDEMİR, Turgay, ARZ, Nurdan   +2 more
openaire   +1 more source