Roberto Zanuttini, 2014, Il legno massiccio, materiale per un’edilizia sostenibile, Compagnia delle Foreste
Marinella Bosetto, Irene Lozzi, 2008, Chimica del legno, Aracne
The slides presented during the lessons will be made available
Learning Objectives - Part A
Understanding wood structure and behaviour, getting knowledge about wooden products
Learning Objectives - Part B
Understanding wood and wood derivates physical and mechanical fundamental behaviour in order to be proprly used in design.
Understanding the principal machinining technologyes used for manufacturing.
Prerequisites - Part A
none
Prerequisites - Part B
A general knowledge of material sciences can be useful.
Teaching Methods - Part A
lectures and laboratory practicals
Teaching Methods - Part B
Conventional class lectures, workshops, company visits.
Further information - Part A
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Type of Assessment - Part A
Write test and oral examination
Type of Assessment - Part B
Written and oral exam.
Course program - Part A
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.
Course program - Part B
FUNDAMENTALS OF WOOD SCIENCE
1. Wood and its uses
2. Trees and carbon cycle
3. Forests of the word
4. Forest certification
5. Origin and structure of wood
6. Properties of wood
7. Anatomical directions
8. Grain, texture, figure
9. Wood water relations
10. Physical properties of wood
11. Mechanical behaviour of wood