Design T4

The response of a material due to stress, defined as the change in length divided by the original length

A force on a material divided by the cross sectional area of the material

The resistance of and elastic body to deflection by an applied force

Alloy the exhibits exceptional mechanical properties, resistance to thermal creep deformation, good surface stability, and resistance to errosion

Fibers made from man made materials, spun into threats; the joining of monomers into polymers through polymerization

Heat treating process that increases the toughness of iron based metals by heating the metal and allowing it to cool in air. This can increase ductility and decrease brittleness

Imperfections in timber, caused by the growth of branches in the tree that reduces its strength

A method for creating a decorative fabric that is woven into symmetrical patterns and figures

Sheets of material made from layers of veneers (plywood)

A rapid prototyping system that creates a 3D product by converting it into slices, cutting the slices, and joining the slices

Covering the surface of a material with a thin sheet of another material typically for protection, preservation, or aesthetic reasons

The weight a robot can manipulate

Wired or wireless communication between similar devices

The smart property relates to a fluid that can undergo a dramatic change in viscosity when exposed to a magnetic field

Also known as engineered wood or composite wood, these are wood products that are made by binding or fixing strands, particles of fibers, veneers of boards of wood together with adhesives or other fixing methods to create a composite materials. Typical examples include MDF, plywood and chipboard

A distortion in which the 2 ends of a materiel do not lie in the same plane

Relates to the amount of matter in a given volume

A sophisticated CIM system that manufactures products to individual customer orders. The benefits of economy of scale are gained whether the order is for a single item or for thousands

The production of large amounts of standardized products on production lines, permitting a very high rate of production per worker

A chart used to identify appropriate materials based on the desired properties

Properties of a material that involve the relationship between stress and strain or a reaction to an applied force

A volume production involving machines controlled by humans

A type of robot that can preform more than one task in a manufacturing environment

A volume production process involving machines controlled by computers.

The product ensures the continued health of a biological environment.

Breaks into numerous sharp shards

Designing a product so that when it becomes obsolete it can easily and economically be taken apart, the components reused or repaired, and the materials recycled.

Designing in relation to materials during processing

Designing to enable the product to be manufactured using a specific manufacturing process, for example, injection molding.

When timber is subject to decay and attacked by fungus

The ability of a material to be drawn or extruded into a wire or other extended shape

The extent to which a material will return to its original shape after being deformed

Reduces transmission of electric charge

The measure of a material's ability to conduct electricity. A material with low resistivity will conduct electricity well.

This smart property relates to a fluid that can undergo a dramatic change in its viscosity when exposed to an electric field.

EMC is at which the moisture content of wood achieves an equilibrium with the environment which can be affected by humidity and temperature.

A method for converting yarn into fabric by matting the fibers together

A simple mechanical arm that has ability to make precise motions at high speed. They need constant supervision by a human operator.

The moisture within timber that is contained within the cell cavities and inter cellular spaces.

A hard, brittle and typically transparent amorphous solid made by rapidly cooling a fusion of sand, soda, and lime.

Metals are crystalline structures comprised of individual grains. The grain size can vary and be determined by heat treatment, particularly how quickly a metal is cooled. Quick cooling results in small grains, slow cooling results in large against. Grain size in metals can affect the density, tensile strength and flexibility.

Designers design specifically for optimum use of existing manufacturing capability

A small-scale production process centered on manual skills.

Designing taking account of assembly at various level, for example, component to component, components into sub-assemblies and sub-assemblies into complete products.

A material that penetrates the timber fibers protecting the integrity of the wood from attack from borer, wood lice, and fugal attack.

The mass per unit volume of a material. Its importance is in portability in terms of a product's weight and size. Design contexts include, pre-packaged food (instant noodles) is sold by weight and volume, packaging foams.

A warp across the width of the face of wood, in which the edges are higher or lower than the centre

A production method used to manufacture, produce or process materials without interruption.

The slow, permanent deformation of a solid material under the influence of a mechanical stress.

Refers specifically to the computer control of machines for the purpose of manufacturing complex parts in metals and other materials. Machines are controlled by a program commonly called a "G code". Each code is assigned to a particular operation or process. The codes control X, Y, Z movements and feed speeds.

The ability of a material to withstand being pushed or squashed

a material comprised of two or more constituent materials that have different properties

Lack of re-activity with other materials

A warp along the length of the face of the wood

Limited volume production (a set number of items to be produced)

Ability of a materials to withstand pulling force

A volume production process where products and components are moved continuously along a conveyor. As the product goes from one work station to another, components are added until the final product is assembled.

The measure of the degree of increase in dimensions when an object is heated. This can be measured by an increase in length, area, or volume. Can be found in fractional increase per kelvin

A fixed 3D space where work activities take place, considering clearance and reach.

Also known as strain hardening or cold working, this is the process of toughening a metal through plastic deformation.

Manufacturing technique that cuts away material to create a component

A long continuous length of interlocked synthetic or natural fibres

A measure of the stiffness of an elastic material and defined by stress/strain

Smart material that when heated can produce an electric current. Comprised of 2 dissimilar conductors

Treatment of wood can involve using solutions, which make the wood poisonous to insects, fungus, and marine borers as well as protecting it from the weather.

The quantity of a 3 dimensional object enclosed by a boundary. The space that an object takes up

A distortion in wood caused by uneven drying, resulting in material bending or twisting

Autonomous robots that can operate without supervision from people. Own central control unit. Swarms of small units fit in this catagory

Ability to allow light to pass through it with minimal distortion

Ability to resist the prorogation of cracks

A plastic that when it takes its shape will permanently stay in that shape

Wood recycling is the process of turning waste timber into usable products. Recycling timber is a practice that was popularized in the early 1990s as issues such as deforestation and climate change prompted both timber suppliers and consumers to turn to a more sustainable timber source.

A plastic that when heated can be reshaped and reformed

Measurement of how fast heat will transfer through material with a given temperature

Relies on mass and gravitational forces to provide measurable value. Weight is technically measure as a force, which is the Newton, i.e. a mass of 1 Kg is equivalent to 9.8 Newton [on earth].

Manufacturing techniques that add material in order to create it

A mixture that contains at least two metals. This can be a mixture of metals or a mixture of metals and non-metals.

Thermally insulated chamber, an oven, which produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes

A method for converting yarn into fabric by creating consecutive rows of interlocking loops of yarn

A property of a smart material. A piezoelectric material gives off a small electrical discharge when deformed.

The act of forming a sheet like material by interlacing long threads passing in one direction with other at a right angle to them.

Aspects of a product that relate to tastes, texture, smell and appearance

Air-drying places that stacks sawed timber in the open or in large shed hence there is little control over the drying process. Will warp the wood.

Any property that is measurable that describes a state of materials, for example, mass, weight, volume and density. These properties tend to be the characteristic of materials that can be identified through non-destructive testing (although some deformation is required to test hardness).

The ability of a material to be changed in shape permanently

The process of restoring tree cover to areas where woodlands or forest once existed. If this area never returns to its original state of vegetative cover the destructive process is called deforestation.

Seasoning is the commercial drying of timber which reduces the moisture content of wood.

Robots that are equipped with sensors that can provide information about their surroundings. They can synchronize with each other and do not require constant supervision by a human; however, they are controlled by an external control unit.

Shape memory alloys are metals that when deformed, can spring back into its original shape once released.

Manufacturing methods for modifying the shape of a material.

Robots that can perform one task only.

Materials that have been designed to have one or more properties that can be modified when subject to an external stimuli in a way that the output can be controlled.

The wood from a coniferous (evergreen) tree.

A continuous manufacturing process used to create composite materials that have a constant cross-section. Reinforcing fibres are saturated with a liquid polymer resin and then pulled through a heated die to form a part.

Materials produced by plants or animals that can be spun into a thread, rope or filament

Absence of toxic breakdown products/lack of reactivity.

An individual (often craft-produced) article or a prototype for larger scale production.

A property of a metal that means that it does not readily react with oxygen and degrade.

Often the first step in a rapid prototyping process, paper prototyping is widely used in UCD for designing and testing interfaces.

A property of a smart material. A photochromic material changes colour in response to an increase in light. When the light source is removed, it returns to its original colour.