Professor Handouts
G.Giordano – Tecnologia del legno Vol.1,2,3. UTET , Torino, 1981
Wood Handbook-Wood as Engineering Material, Forest Products Society, 1999 USA.
Learning Objectives
Understanding wood structure and behaviour, getting knowledge about characterisation standards and techniques.
Prerequisites
nothing
Teaching Methods
lectures and laboratory practicals.
Contact hours for Lectures (hours): 30
Contact hours for Practical activities (in laboratory and lecture room): 18
Further information
Attending lectures, practice and lab, although non compulsory, is strongly recommended
Teaching equipments: Video projector, PC, woodworking workshop, laboratories for wood anatomy, physical and mechanical properties at DAGRI Department.
Type of Assessment
Write test and oral examination on the subjects of lectures and laboratory practice.
Evaluation criteria: command of basic concepts, ability to apply them in real cases, adequateness of technical language.
Course program
Wood as a material of biological origin: implications on the Carbon cycle.
The structure of wood: elements of ultrastructure of the cell wall, types of wood structures.
The nomenclature of wood species, elements of macroscopic and microscopic identification.
The defects of the wood. - The relationships wood water, the water contained in the wood, equilibrium moisture, effects of changes in humidity on the behavior of the wood, shrinking swellings. Cupping and other types of deformation. The density and basal density.
Mechanical characteristics of wood. Elastic behavior. Influence of defects and humidity on resistance. Viscoelastic behavior and mechano sorption.
The natural durability of wood: wood-altering organisms. Environmental conditions that favor the alteration of wood.
Technical standards in the wood and derivatives sector, classification for structural uses. Technological characteristics of wood species and their intended use.
Wood processing. Sawing, blanking, peeling, numerical control work centers. Wood-derived products: sawn, glue laminated products, plywood panels, LVL, particle board and fibreboard, OSB, Parallam, microlaminar. Wood Plastic composites.
The glues for wood. Thermosetting glues and thermo-plastic glues. Glues urea formaldehyde, phenol glues, MUF glues, vinyl glues. Bonding of wood critical factors.
Modified wood. Definition and main processes of wood treatment. High temperature treatments, chemical treatments. Acetilizzazione. Curvature of wood and related technologies.