Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

Wood Physical Properties: Strength and Moisture Content

In course

MSE-466: Wood structures, properties and uses

The presentation of tree growth and formation of wood anatomical structures, linked to the description of specific physical and mechanical properties, makes it possible to understand the different forms of utilisation of this material, including aspects of ...

Description

This lecture covers the physical properties of wood, including types of failure in bending, strength distributions in compression, bending, and tension tests, species comparison for mechanical properties, energy absorption and fatigue, factors influencing strength, equilibrium moisture content, and longitudinal, radial, and tangential shrinkage. The instructor also discusses the practical application of wood properties in the sport sector, focusing on ski cores.

This video is available exclusively on Mediaspace for a restricted audience. Please log in to MediaSpace to access it if you have the necessary permissions.

Watch on Mediaspace

Official source

Related concepts (32)

Knot

A knot is an intentional complication in cordage which may be practical or decorative, or both. Practical knots are classified by function, including hitches, bends, loop knots, and splices: a hitch fastens a rope to another object; a bend fastens two ends of a rope to each another; a loop knot is any knot creating a loop; and splice denotes any multi-strand knot, including bends and loops. A knot may also refer, in the strictest sense, to a stopper or knob at the end of a rope to keep that end from slipping through a grommet or eye.

Knot theory

In topology, knot theory is the study of mathematical knots. While inspired by knots which appear in daily life, such as those in shoelaces and rope, a mathematical knot differs in that the ends are joined so it cannot be undone, the simplest knot being a ring (or "unknot"). In mathematical language, a knot is an embedding of a circle in 3-dimensional Euclidean space, . Two mathematical knots are equivalent if one can be transformed into the other via a deformation of upon itself (known as an ambient isotopy); these transformations correspond to manipulations of a knotted string that do not involve cutting it or passing it through itself.

Knot (mathematics)

In mathematics, a knot is an embedding of the circle S^1 into three-dimensional Euclidean space, R3 (also known as E3). Often two knots are considered equivalent if they are ambient isotopic, that is, if there exists a continuous deformation of R3 which takes one knot to the other. A crucial difference between the standard mathematical and conventional notions of a knot is that mathematical knots are closed — there are no ends to tie or untie on a mathematical knot.

Chiral knot

In the mathematical field of knot theory, a chiral knot is a knot that is not equivalent to its mirror image (when identical while reversed). An oriented knot that is equivalent to its mirror image is an amphicheiral knot, also called an achiral knot. The chirality of a knot is a knot invariant. A knot's chirality can be further classified depending on whether or not it is invertible. There are only five knot symmetry types, indicated by chirality and invertibility: fully chiral, invertible, positively amphicheiral noninvertible, negatively amphicheiral noninvertible, and fully amphicheiral invertible.

Wood

Wood is a structural tissue found in the stems and roots of trees and other woody plants. It is an organic material - a natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves.

Related lectures (28)

Knots: from reality to mathematics and back

Explores the transition of knots from practical applications to mathematical theory, covering equilibrium, tension analysis, ideal shapes, DNA mechanics, and pressure distributions.

Computational Exploration of Multistable Elastic Knots

Explores multistable elastic knots, mathematical knots, simulation, shape space, knot retrieval, jumping knots, and applications.

Analysis of Lattices: Knots and Equilibrium

Covers the analysis of lattices focusing on knots, equilibrium equations, and normal forces calculation.

Mechanical and Thermal Properties of Materials

Explores the mechanical and thermal properties of materials like wood, brick, concrete, and glasses, including their resistance to thermal shock and types of glazing.

Telescope Construction