A Level Design and Technology - Component 1 Flashcards

Fill-in-the-blank flashcards based on the A Level Design and Technology Edexcel Component 1 lecture notes.

__ woods

come from deciduous or broad-leafed trees

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is a very strong wood, light in color, open grain, but hard to work with, and used for high class furniture, boats, beams, and veneers.

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is an easy to work wood, reddish brown in color and is used for expensive indoor furniture and veneers.

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is a straight-grained hardwood with a fine texture and is also very easy to work with, used for furniture, toys and tool handles.

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is a low density straight grain fine texture wood, often used for sculpting and pattern making.

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is a pale white to grey softwood, with a distinct velvety feel and exceptional strength to weight properties, used for model making and airplane construction.

__ woods

come from coniferous trees, grow faster than hardwoods, are cheaper, and easier to work with, and is used for cheap quiality furniture.

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is a straight-grained but knotty softwood, cheap and readily available, used for cheap quality furniture and construction work.

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is a hard and straight-grained softwood that is almost knot free and fairly strong,used for good quality knot free pine furniture such as doors and staircases.

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is a pale yellow-colored softwood with a fine even texture that is light in weight but stiff and stable, primarily used for furniture, boat building, veneers, and model making.

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is a tough, waterproof and durable softwood that is resistant to rot, used for building yachts and exterior cladding.

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is a quite strong softwood, cheap, durable when preserved, and used for general woodwork.

__ metals

consist mostly of iron. They are prone to rusting and can be picked up by a magnet.

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is iron mixed with carbon, ductile and malleable, but mild steel will rust quickly.

__ steel

contains up to 1.5% carbon content, is very strong and hard, and resistant to abrasion, used for hand tools.

__ iron

contains 93% iron and 4% carbon, very strong in compression, but very brittle, and is suitable for car brake discs and manhole covers.

__ metals

do not have any iron in them, they are not attracted to a magnet and they also do not rust in the same way.

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is a light in color, light in weight metal used for saucepans, cooking foil, and window frames.

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is a ductile and malleable metal, often red/brown in color, and is a very good conductor of heat and electricity.

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is a very resistant to corrision material, but is very weak.

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is a very ductile and very malleable metal, resistant to corrosion, bright silver, and used as a coating on food cans and used for soldering.

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are substances that contain two or more different metals and occasionally other elements.

__ steel

is an alloy of iron with chromium, nickel, and magnesium content, very resistant to wear, water corrosion, and rust.

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has excellent strength to weight ratio, is extremely hard and tough, and is used for aircraft and vehicle structures.

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is a mixture of copper and zinc, cast and machined and plated, and is used for decorative metal work.

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can be heated and shaped many times and will soften when it is heated and can be shaped when hot but can be reshaped because there are no links between the polymer chains.

Polyethylene terephthalate (__)

is used to form fizzy drink bottles, food packaging, food trays

High density polyethylene (__)

is used for unbreakable bottles and packaging sheets

Polyvinyl chloride (__)

is weather resistant, chemical resistant and strong, used for food and drink packaging.

Low density polyethylene (__)

Good resistance to chemicals and a barrier to water, lightweight and flexible, used to produce cling film and milk carton coatings is

Polypropylene (__)

is a lightweight, rigid plastic with excellent chemical resistance, making it suitable for food packaging.

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used for covers of car lights, aircraft canopies and windows

Acrylonitrile butadiene styrene (__)

Impact resistance and toughness, light weight and can be injection molded and extruded, used in protective headgear, drain pipes and lego bricks is

__ plastics

can only be heated and shaped once and is where polymer chains are interlinked, joining separate polymers to form a huge polymer..

__ resins

is a good electrical insulator, hard but brittle, resists chemicals, and used for casting, encapsulation and adhesives.

Urea formaldehyde (__)

Stiff, hard, strong but brittle Good electrical insulator, used for electrical fittings, handles and control knobs, handles is

__ resin

is a stiff, hard material that can be brittle unless laminated and is often used for casting and car bodies.

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is a polymer with the property of elasticity, that deforms under stress and returns to its original shape when the stress is removed..

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It has good elasticity and high tensile strength when vulcanised, making it ideal for car tyres and tubes.

__ material

is formed when two or more materials are combined by bonding, with an improved strength to weight ratio..

__ fibre (GRP)

is made of polyester or epoxy resin reinforced by fine fibres of glass in the form of a woven matting.

__ fibre (CFRP)

uses carbon fibres to take tensile loads placed into a polymer resin matrix that take the compressive loads for high-performance structural applications.

__ Density Fibre Board (MDF)

is made from wood waste subjected to heat and pressure, mixed with a synthetic resin adhesive and heat pressed to form a fine textured surface.

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is an engineered wood product, denser and much stronger than MDF because it is made out of exploded wood fibres that have been highly compressed.

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is where in wood particles are glued together under heat and pressure resulting a rigid board that has a relatively smooth surface

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is manufactured from layers of veneers that are bonded together using glue so that grain direction on each sheet is at 90° to the sheet of veneer above and below it.

__ paper

is thin translucent paper with a smooth surface mainly used for outline sketches and marker renderings where its translucent property allows tracing through onto another sheet.

__ paper

is thin transparent paper with a smooth surface and heavier weight which allows tracing through onto another sheet in order to develop design ideas..

__ paper

is the lightweight grade of quality paper with a good quality bleached surface and is good for B/W photocopying and Printing from inkjet and laser printers.

__ paper

is a creamy-white paper with a smooth surface with a slight texture, commonly used as a good general purpose drawing paper..

__ paper

is a high-quality durable writing paper that often has a watermark, used for graphic work involving pencil, pen and felt-tip marker.

__ paper

has a coating with china clay, pigment and adhesive to give a smooth surface finish, is used for high-quality print jobs

__ board

is a thick board with color on one side only, mostly used for presentations and displays work.

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is used for protective packing of fragile goods

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consists of two card liners with a foam core and is used for interior design models

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has Bleached virgin pulp top surface and unbleached middle layer, used for the majority of food packaging.

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has a laminated foil coating in matt or gloss finish is used for packaging and provides an excellent barrier against moisture..

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is soft fibre that grows around the seeds of the cotton plant and is suitable for Jeans, T-shirts and towels that is cool to wear and absorbant but creases easily.

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is a material made from the fibres of the flax plant and is suitable for summer clothing, tea towels pillowcases and tablecloths that is fresh and cool to wear but creases badly.

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is the fibre derived from the hair of domesticated animals, usually sheep for Jumpers, suits and blankets that is warm to wear and breathable, but dries slowly and can shrink

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is a synthetic polymer used to make active sportswear, fleece jackets, socks and seat belts providing warmth and durability

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is not absorbent but good chemical resistance used for home furnishings and automotive markets that can’t be ironed and is flammable .

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Is non-absorbent and drics quickly which makes for used in for Raincoats, fleece jackets, children's nightwear, medical textiles and working clothes that but is low warmth

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fabric are normally treated to different British Standards, these could include household furnishings or clothing.

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and functional textiles are suitable for Alleviate skin irritation in patients with neurodermatitis and psoriasis and can prevent bedsores in bedridden patients.

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are very advanced ceramic materials that have properties that make them particularly useful in some specialist engineering situations where there is a need for stability and strength at high temperatures.

shape-memory alloy (__)

If a part made from a __ is bent out of shape, when it is heated above a certain temperature it will return to its original shape,

__ glass

is a smart glass that requires an external stimulus to make it turn from clear to dark that is used in masks for electric arc welding.

__ displays (LCD)

are organic, carbon-based compounds that can exhibit both liquid and solid crystal characteristics used in digital clocks and wristwatches .

__ materials

change colour according to different lighting conditions. used for security markers that can only be seen in ultraviolet light.

__ materials

change colour as the temperature changes used on contact thermometers made from plastic strips and test strips on the side of batteries.

quantum tunneling composites (__)

When __ is in its relaxed state, it is a near perfect electrical insulator but when it is stretched, compressed or twisted it become an electrical conductor and allows, in some instances, very high currents to pass through it.

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is the ability of material to resist deformation.

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is the ability of material to regain its original shape after removal of external applied forces.

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is the ability of material to retain its shape (deformed shape) after removal of external applied forces (permanent deformation).

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is the ability of a material to undergo large permanent deformation in compression is known

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is a measure of the degree to which a material can strain or elongate between the onset of yield and eventual fracture under tensile loading.

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is Resistance to penetration or indentation.

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is the ability of material with which the material opposes rupture or fracture..

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measures the length of a product’s life. When the product can be repaired, estimating __ is more complicated.

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is the capacity of a material to decompose over time as a result of biological activity, especially to be broken down by microorganisms

__ and Tempering

If carbon steel is heated to red heat and then quenched in water, it will become very __.

__ hardening

This technique is used for steels with a low carbon content, where is added to the outer surface of the steel.

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is a heat process whereby a metal is heated to a specific temperature /color and then allowed to cool slowly in order to soften metal, which mean it can be cut and shaped more easily.

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is a process that is undertaken on ferrous metals that have become hardened, in order to return them to their original unhardened state. The steel is heated until cherry red, and then allowed to cool in air.

__ metals

are rarely used in manufacturing because they are too soft, so other elements are added to the molten metal so that the resulting solid is harder and has other desirable properties.

__ lithography

uses oil and water differences and an aluminum plate to transfer an image.

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uses a plastic or rubber plate, fountain roller submerged in ink, and raised surface transfer ink.

__ printing

uses a fabric stretched over a screen, place screen over the material, apply ink to screen, and use a squeegee to push ink onto screen.

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uses a digitally engraved copper plate partially submerged in ink that get scraped by a doctor blade before printed with impressed cylinder

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uses molten metal poured into a cavity a sand mould product and it is in expensive and is used to make complex shapes but has surface finish not always good and can only be used once - which creates a slow production rate.

__ casting

is also known as lost-wax casting that Produces a wax pattern is encased and destroyed allowing molten metal poured Advantages excellent surface and Extremely intricate parts are castable almost any metal  but expensive overall.

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ClampingInjectionCoolingEjectionTrimming is the process of that forces molten metal Products Tradional toy cars Engine pars advantagesHigh dimensional accuracy fast Producion walls DisadvantagesCost of Effective Casting must be smaller

__ casting

A mould is filled with a liquid synthetic resin, industrial for industrial prototypes Dentistry advantagesResin can be casted or  painted in color Disadvantages drying time not good for batch/mass production

__ casting

is when the moulding material is plaster of Paris Advantages excellent surface produces minimal

__ machine

which is a process of making holes by using a rotating cutting tool

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can be undertaken using either a metalwork centre lathe or a woodworking lathe while the work turns

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is the process of placing flat sheet metal where a tool and die surface forms the metal into a net shape under a stamping press

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is where a material has been produced by gluing together thin sheets, or veneers, to make up that material and bond them with strong glues.

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consists of using granules of plastic in a hopper forcing which a thread melts then into a liquid mould and then forcing the injected material product into a mould cooled and a unit is remove with great precision