WOOD SPECIES / WOOD ANATOMY

Author
CONTACT:
Mikroskopy and Identification of wood:
DI Dr. Gerhard Grüll (Ext. -61, Email)
DI Florian Tscherne (Ext. -15, Email)

Physical and mechanical characteristics:
DI Dr. Andreas Neumüller (Ext. -53, Email)

Densified solid wood

Microscopic characteristics of wood facilitate the identification of wood species

The specialized area “wood species and wood anatomy” focuses on microscopic investigations of the structure of wood and wood-based materials, on the identification of wood species as well as on physical and mechanical properties of wood.

RESEARCH AND DEVELOPMENT

 

Densified solid wood

In the course of the development of new wood-based composites, investigations into the structure of densified solid wood were undertaken. Deformations of the wood structure brought about by the densification were visualized and conclusions on the technical properties of the resulting wood-based material could be drawn.

Investigation of the bonding of wood

Microscopic investigations of glue-lines enable conclusions to be drawn on the penetration of adhesives into wood, the formation of glue-lines for different adhesives, glue-spreads and surface qualities of the wood substrates. Microscopic investigations into the crack initiation and propagation in finger jointed wood loaded in tension are performed.

Physical and mechanical properties of wood

Physical and mechanical characteristics (tensile, compressive, flexural and shear strength, modulus of elasticity, density, differential swelling and shrinkage etc.) can be determined for wood species which are of special interest but for which insufficient published data exists.

TESTING AND INSPECTION

• Determination of the moisture content of wood according to ÖNORM EN 13183 parts 1 and 2 (oven dry method, electrical resistance method)
• Bestimmung der Rohdichte beispielsweise gemäß ÖNORM EN 408

ADDITIONAL SERVICES

Wood identification by microscopy

Microscopic and macroscopic characteristics of wood facilitate the identification of wood species. To this end, thin sections are prepared from splinters or larger pieces of the wood to be identified. The thin sections are aligned with the main anatomical directions of the wood. Technical literature and the collection of samples of numerous wood species maintained by Holzforschung Austria are used during the identification.

SPECIAL FACILITIES

• Laboratory for microscopy (incident and transmitted-light microscopy, measuring microscope, various methods of sample preparation, digital image processing)
• Device for applying bending and tensile loads to small specimens in order to make in-situ microscopic observations
• Collection of wood species encompassing approximately 1040 wood species and microscopic thin sections
• Laboratory for investigations of physical and mechanical properties
• Universal testing machine
• Conditioning rooms and chambers

For further informastion log on website :
http://www.holzforschung.at/holzarten-holzanatomie.html?&L=1