Course title in Czech:
|Physical and Mechanical Properties of Wood|
Course title in English:
Physical and Mechanical Properties of Wood
|Semester: ||WS 2019/2020|
|Mode of completion and number of credits: ||Exam (4 credits)|
Mode of delivery and timetabled classes:
full-time, 2/1 (hours of lectures per week / hours of seminars per week)
|Level of course: ||master|
|Type of delivery: ||usual|
|Mode of delivery for our mobility students abroad: |
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|Language of instruction: |
|Ing. Václav Sebera, Ph.D.|
Course supervising department:
|Teachers: |Ing. Martin Brabec, Ph.D.
(examiner, instructor, tutor)Ing. Luděk Praus, Ph.D.
(examiner, instructor, lecturer, tutor)Ing. Václav Sebera, Ph.D.
(examiner, instructor, lecturer, supervisor, tutor)Ing. Jan Tippner, Ph.D.
(examiner, instructor, lecturer, tutor)
Timetable in this semester:
|-- item not defined --|
Aim of the course and learning outcomes:
|Knowledge of the properties of wood and wood-based materials for using in wood construction, furniture and for other wood products. Learning the fundamentals of materials engineering - understanding the relationship between chemical composition, anatomical structure and properties of wood.|
|Course content: |
Physical properties of wood. (allowance 0/2)
The nature of wood and wood products. Fundamental properties of softwoods and hardwoods.
Elementary wood structure -- macroscopic and microscopic characteristics of wood.
Density and specific gravity:
Basic wood -- moisture, density, and temperature, relationships. Specific gravity, moisture content, hygroscopicity, dimensional changes due to changing moisture content.
Water and wood. Wood ultrastructure. Moisture movements in wood. Woos drying and dimensional changes.
Thermal conductivity and moisture diffusion:
Coupled mass and heat transfer.
Thermal properties of wood - heat capacity, heat transfer, heat and thermal conductivity.
Acoustic properties of wood - wood sound propagation, sound damping, resonant properties of wood, building acoustics.
Electrical and magnetic properties of wood - conductivity, dielectric strength properties. Optical properties of wood.
|Mechanical properties of wood. (allowance 0/2)|
Strength of wood. Lumber and composite products.
Introduction. Mechanics of deformable body. Stress and strain tensors, transformation of stress and deformation components. Equilibrium equation. Simple stress-strain systems -- uniaxial and shear stress, stress-strain curve. Mohr's circle.
Hooke's law. Application of the theory of elasticity on simple states of stress - wood strength in pressure, tension, bending, shear and torsion.
Determination of mechanical properties.
|Rheology of wood - wood creep, the effect of stress time, permanent strength. Plasticity of wood, viscosity. Stiffness of wood.|
Factors influencing the physical and mechanical properties of wood. Evaluation of quality wood. Modification of wood properties. Durability and resistance.
Destructive and nondestructive testing. Numerical simulation of physical fields.
|Learning activities and teaching methods: |
|Type of teaching method|
|project work||2 h|
public presentation (oral)
preparation for regular assessment
preparation of presentation
|elaboration of reports|
writing of seminar paper
|Credit (reports of 10 exercises ranked 0-1, seminar worked rated 0-5, presentations rated 0-5, a minimum total of 13 points, test 20 questions)|
Test (solution of problems using available tools, oral exam of four topics - preparation in written form, verbal response).
Assessment criteria ratio:
|Requirement type||Daily attendance|
Recomended reading and other learning resources:
| Composite Materials: Mechanical Behavior and Structural Analysis. New York: Springer Verlag, 1998. 645 p. ISBN 0-387-98426-7.|
|BODIG, J. -- JAYNE, B A. Mechanics of Wood and Wood Composites. Malabar: Krieger Publish.Comp., 1993. 21 p. ISBN 0-89464-777-6.|
|BUCUR, V. Acoustics of Wood. Boca Raton: CRC Press, 1995. 284 p. ISBN 0-8493-4801-3.|
BUCUR, V. Nondestructive characterization and imaging of wood. Berlin: Springer, 2003. 354 p. Springer series in wood science ;. ISBN 3-540-43840-8.
Transport Processes in Wood. Berlin: Springer-Verlag, 1984. 245 p. ISBN 3-504-12574-4.
| Wood: Influences of moisture on physical properties. Virginia: Virg.Polytech.Institute&State University, 1995. 227 p. ISBN 0-9622181-0-3.|
| Wood-Water Relations. Berlin: Springer-Verlag, 1988. 283 p. ISBN 3-540-19258-1.|
|TORGOVNIKOV, G. Dielectric Properties of Wood and Wood-Based Materials. Berli: Springer-Verlag, 1993. 196 p. Springer Series in Wood Science. ISBN 3-540-55394-0.|
Course listed in study plans for this semester:
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Course listed in previous semesters:
|Teaching place: |