AQA GCSE DT flashcards

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a cooperative

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Key terms that you need to know for AQA GCSE DT

242 Terms

1

a cooperative

a business owned and self managed by its workers all shares are held by the workforce

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2

Absorbency

A materials ability to soak up and retain liquid, heat or light

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3

ACCESFM

Aesthetics, cost, customer, environment (social, environment and cultural factors), x, function, material

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4

acrylic

hard, good optical quality

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5

advantages and disadvantages of batch production

  • jigs, templates and moulds can be kept for future use +specialist machinery isnt needed

  • labour intensive -takes time to make jigs, moulds, and templates

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6

advantages and disadvantages of massproduction

+can make products quickly and cheaply -expensive machinery -only works for making a lot of products

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7

advantages and disadvantages of oil

+waterproofing +vegetable oil is non-toxic -oily surface

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8

advantages and disadvantages of one off production

  • no set up cost +can be customised -slow and expensive

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9

advantages and disadvantages of painting

+lots of colours -covers up natural wood grain

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10

advantages and disadvantages of shellac

+used on expensive furniture for glossy lustre -easily damaged by water/heat

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11

advantages and disadvantages of staining

  • makes the wood darker to make it look like more expensive wood (like oak/mahogany) -pine grain still shows (making it look cheaper)

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12

advantages and disadvantages of varnishing

+hardwearing finish that shows grain +high gloss, or matte finish -can scratch/chip and expose the wood

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13

advantages and disadvantages of veneering

+expensive wood can be put on cheaper wood -still natural wood, so it still needs a finish

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14

advantages and disadvantages of wax

+easy to apply +plain/natural look -rubs away -can't be glossy

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15

ash

tough flexible

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16

automation

repetitive tasks on an assembly line carried out by machines or robots

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17

balsa

lightweight

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18

batteries

stores electrical energy alkaline batteries single use and secondary

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19

Baulk cut

Trunk is cut into a square to rectangular section

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20

beech

strong

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21

beed proof

smooth and prevents bleeding

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22

benefits of genetic engineering of timber

-makes trees resistant to diseases -can make trees grow faster

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23

biomass energy

renewable energy derived from burning organic materials such as wood and alcohol

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24

CAD

Computer Aided Design drawing, designing and modelling on screen if connected to a compatible machine

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25

CAM

Computer Aided Manufacturing it allows CAD designs to be made by machine things can be designed at one factory and made somewhere really far away

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26

capacitors

store electrical energy between two parallel plates

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27

cartridge paper

good quality, white, slight texture

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28

changing job roles

as tech develops the jobs either no longer exist or are changed new tech can perform the tasks

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29

CNC

Computer Numerical Control machine tools which are controlled by a computer

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30

coal power

Energy produced by burning coal causes atmospheric pollution

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31

coated metals

anodised aluminium, nickel-plates steels and polymer-coated aluminium

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32

composites

a material made from two or more different materials to combine their properties reinforced plastic carbon fibre

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33

conductive fabrics

fabrics that have conductive fibres woven into them

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34

Corn starch polymers

developed to replace oil based thermoplastics have a short life span biodegradable

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35

corrigated card

strong, lightweight

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36

Cotton

Strong absorbent

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37

Coversion (wood)

Turning wood into planks

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38

crowdfunding

raising money for a project by obtaining many small amounts of money from many people people may donate because they like the idea or think they may get use out of the product

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39

culture

Beliefs, customs, and traditions of a specific group of people. designers need to take into account not to offend a culture

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40

Density

A materials mass per unit volume

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41

Design for maintenance

designing a product so that it needs functions performing on it to keep it working

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42

designing and its effect on the environment

designers need to understand the effect that their product will have on the environment

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43

designing for society

designers need to meet the needs of everyone in society

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44

Ductility

A materials ability to be drawn or pulled into a long length or wire without breaking

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45

duplex board

thin, with onw side suitable for printing

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46

Elastane

Very stretchy so cannot be used alone

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47

Elasticity

A materials ability to stretch under force and return to its original shape

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48

Electrical conductivity

How easily electrical energy can be passed through it

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49

End of life disposal

materials are better recyclable

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50

Enhancing materials

Can be enhanced to resist and work with forces and stresses to improve functionality

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51

enterprise

a skill where organisations are prepared to show initiative and take risks to make things happen

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52

epoxy resin

electrical insulator, good chemical wear and resistance

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53

ethics during design

cutting costs during design by reducing jobs or making the product in a country where labour costs are lower

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54

factories

making materials into products, usually consisting of assembly lines and are split into sections known as shops

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55

fairtrade

A movement which aims to give all people a fair price for the goods they produce and safe working conditions and promotes sustainability

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56

fashions and trends

keeping up with the latest technology often affected by celebrities as part of a culture changing their fashion or tech

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57

Features of plain weave fabrics?

Simplest, cheapest, strong

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58

First order lever

fulcrum in the middle

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59

Five forces that can act upon a material

Tension, compression, shear, torsion and bending

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60

FMS

flexible manufacturing system a system where production is organised into cells of machines performing different tasks

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61

foam core board

two peices of board with a core of foam

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62

foil-lined board

one side covered in aluminium foi

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63

FSC

Forest Stewardship Council

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64

Fusibility

How easily a materials state can be altered o become a liquid

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65

Gore-Tex

a waterproof fabric that is able to breath by letting water vapor pass through it and is also waterproof. The fabric has a coating of Teflon

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66

graphene

thin 2D material layer of carbon strong lightweight

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67

grid paper

printed with grids

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68

Hardness

A measure of how easily a mineral can be scratched

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69

hat is foiled lined board used for?

takeaway food

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70

HDPE

hard and stiff

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71

HIPS

tough, hard, rigid, lightweight

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72

how can timber be sustained

some forests are sustainably managed; trees are replanted when others are cut down

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73

hydroelectricity

electricity generated by the kinetic energy of moving water

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74

industry

the way we manufacture

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75

innovation

bringing new ideas to the market developing things in a completely new or improved way

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76

JIT manufacturing

Just-in-time manufacturing a method where the materials are ordered to arrive at the assembly line when they are needed

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77

kevlar

A strong synthetic material used in the construction of protective clothing and equipment

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78

kinetic pumped storage system

similar to hydroelectric power two levels of water which the water can be transferred through a turbine creating electricity

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79

larch

tough easy to work

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80

layout paper

thin, translucent

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81

LDR

more light = less resistance

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82

lean manufacturing

focusing on giving customers value for money by reducing waste

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83

liquid crystal display (LCD)

A flat-panel monitor that creates an image when liquid crystals become electronically charged.

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84

mahogany

strong durable

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85

Malleability

A materials ability to be permanently deformed or shaped by impact, rolling or pressing without breaking

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86

market pull

where users want a product to be improved to redeveloped to meet their needs

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87

mechanical energy storage

flywheel a spinning mass that continues to spin when the driving force stops when spinning it stores rotational energy

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88

metal foam

A metal containing gas-filled pores, giving it a very low density

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89

MF

stiff, hard, good resistance to heat scratching and staning

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90

micro encapsulation

Substances that are fixed to the fabric or the fibre and can then be activated, such as perfumes

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91

microfibres

a very thin synthetic fibre

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92

nanomaterials

have tiny parts added to make materials stronger

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93

natural gas power

used for heating and cooking

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94

nuclear power

energy from splitting Uranium atoms (fission) very hazardous

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95

Nylon

Fine, lightweight and strong

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96

oak

hard durable

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97

oil power

does need to be precessed by refining from crude oil powers ships and large vehicles

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98

Paper stock sizes

A1, A2, A3, A4, A5, A6

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99

PET

durable, lightweight, cheap

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100

PF

hard, heat and chemical resistance, limited colours

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