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Year 10 GCSE Design + Technology > Dt All Flashcards > Flashcards

Dt All Flashcards

1
Q

What is the FSC logo ?

A

-The forest stewardship council is a non profit making orginisation to protect the sustainability of forests
- A product carrying this logo shows that the timber they are using comes from a forest managed in a sustainable way

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2
Q

What is an alloy ?

A

Metals forming by mixing together two or more metals to produce a new metal that has improved charicteristics .

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3
Q

What are polymers made from ?

A

-Polymers are made from crude oil .
- monomers are combined to form long strands

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4
Q

Thermoforming polymers ?

A

-They can be reheated and therefore shaped in various ways
-re heating them weakens the bonds so much that they become liable to re-shaping
- they are high recyclable , eco-friendly manufacturing .
- cons -if heated may melt , more expensive

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5
Q

High - impact polystyrene properities ?

A

-glass like texture , good dimensional strength , heat resistant
-uses: yogart containers , plastic cutlery

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6
Q

High - density polystyrene ?

A

Flexible, translucent , low cost , good low temperature toughness
- insulate walls

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7
Q

Polyethylene terephthate ?

A

-High strength, very low moisture desorbation , good chemical resistance
- textiles , packaging, litre bottles

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8
Q

Acrylic ?

A

-very high mechanical strength and hardness , easy to polish , low water absorption, transparent
-glass lenses , acrylic nails , bath-tub,

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9
Q

Polypropylene ?

A

-Semi-riged , good chemical resistance , tough , translucent , good heat resistance
- textiles , hot bevarage cups .

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10
Q

What are Thermosetting polymers ?

A

Once ‘set’ these plastics cannot be reheated to soften,shape or mould . They have a tridimensional lattice structure making the bonds between them very strong .
Pros -high heat resistance , excellent appearence , cost effective
Cons - cannot be recycled , difficult to apply surface finnish

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11
Q

What is QA?

A

QA - quality assurance
- it doesnt check the quality of the final product , but the quality of all system of the production line . Thinks more about customer then then the standards

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12
Q

What is QC ?

A
  • quality control
    -The process of inspecting productsto ensure that they meet the required quality standards.
  • it undergoes physical tests (e.g dropped from a height etc )
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13
Q

What is the kilemark trademark ?

A
  • this is linked to production and it assures the service quality and that safety is paramount .
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14
Q

What is the lion mark ?

A

This is a brittish consumer symbol developed in 1988 and is used to identify toys as safe and of a high quality

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15
Q

What are smart materials ?

A

Smart materials are designed materials that are changed by an external stimuli such as temperature moisture electric or magnetic feilds or uv light

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16
Q

What are some Timber manufacturing processes ?

A

Routering : shape , cut or create designs in wood . Different tools for differnet things
Turning : peices of timber are rotated and cutting tools are used to shape it
Laminating : thin strips of wood glued together in a former .
Steam bending : peices of timber can be bent by straming them as it temporarily softens them
Kerfing : adding thin saw cuts into wood you can make it flexible and make curved shapes

17
Q

What are the plastic manufacturing processes ?

A

Line bending : typically acrylic used , heated to 160oc polymer become pliable jigs are used to keep in place .
Injection moulding : plastic granules into hopper , heated jackets around screw melt polymer then the hydralic ram forces the plastic into the mould . Then the plastic is allowed to cool .
Extrusion : feeds grandules into a heater , they melt and forced through a die making shapes, dried
Vacuum forming : mould placed into former , heated former raised air suction , cool then removed.
Blow moulding : mould opened , hollow tube - parison is heated and put it , mould is shut and air is forced into mould at high pressure forced to mould into sides then cooled

18
Q

What are the scales of production ?

A

-One off production - expensive , long time to make , made from skilled craftsmakers
- batch production - all are identical , made in small batches , cost 2-10k
-mass production - produces in high volumes 10k+, high demand , cost ranges
- continuous production - cheap , factories found in developing countries
- Just in time - product made to a time schedule , everything exact times , production , shipping . Apple use this .

19
Q

What are the wastage metal manufacturing proccesses ?

A
  • turning - same as timber but with metal
  • sawing - you can use a junior hacksaw for polymers , metals and timbers for small jobs but a hacksaw can be removed from the frame and replaced when the teeth become blunt
  • milling - milling is similar to routering but due to metals being cut they have more durable cutting tools .
    -drilling - instead of a pillar drill or a slot drill (milling) high speed steel twist drill does this with a bit more accuracy and speed .
  • cutting and sheering - cutting and slicing action . Cutting - some saws cut thicker planks
20
Q

What is the term wastage ?

A

Cutting away material with tools and equipment .

21
Q

What are the addition proccesses of metal ?

A

Welding - usually metals , melting work peices and adding a filler material to form a pool of malten material when dried strengthens the material .
Brazing - metal joining process where a filler metal is heated and applied between two or more fitting parts close .
Soldering - where 2 or more metal parts are put together by melting and flowing soilder into a joint . The soilder must have a lower boiling point then adjoining metal .

22
Q

What is deforming and reforming ? ( bending and casting)

A

Bending and casting
- bending - simplest form of forming a metal , bending it with a vice or just hollowing it using jigs
Casting - pewter casting - low tech add pewter into a mould let it dry remove it .
Sand casting - oldest form of casting still used today

23
Q

What is UCD ?

A

Placing people at the heart of a design and its where designers focus on users needs in each phase of the design process .

24
Q

What is ergonomics ?

A
  • The study of how well and comfortably people can interact with products and systems
  • it should improve peoples life when using it increasing comfort and satisfaction and interaction .
25
Q

What is anthropometrics ?

A

This is the practice of taking human body measurments and provides catagorised data for designers .
- hairdryer - people hand sizes

26
Q

What is the normative data of anthropometrics shown as ?

A

There is a 0-5 th percentile of people who are very small
50th percentile - people average size
95-100th percentile are for prople who are very tall

27
Q

What are the 6 R’s

A

Reduce
Recycle
Refuse
Reuse
Repair
Rethink

28
Q

What does reduce mean ?

A

Cut down the amount of material and energy you use as much as possible

29
Q

What does reuse mean ?

A

Use a product to make something else with all parts of it

30
Q

What does recycle mean ?

A

Reproccess a material or product and make something else

31
Q

What does repair mean ?

A

When a product breaks down or doesnt work properly fix it

32
Q

What does refuse mean ?

A

Dont use a material or buy a product if you dont need it or if its bad for people or the environment

33
Q

What does rethink mean ?

A

Do we make to many products ? Design in a way that considers people and the environment

34
Q

What do the 6 R’s promote ?

A

How we can live a more sustainable life and how we can lessen the impact on our environment .

35
Q

What is sustainability ?

A

Can be broken down into 3 social environment and economic .
It is the proccess of replacing environmentally harmful equipments with renewable equipment

36
Q

What are the properties ferrous metal ?

A
  • contains iron
  • magnetic
  • carbon content makes it prone to corrosion when exposed to moisture and oxygen
  • very hard , malleability - the more the carbon content the harder due to bonds
37
Q

What is an example of a ferrous metal ?

A

Cast iron , low carbon steel , high carbon steel

38
Q

What are the properties of a non-ferrous metal ?

A
  • doesnt contain iron
  • corrosion resistant
  • many are not magnetic - good for phones
39
Q

What are non - ferrous metals ?

A

Aluminium , copper , zinc

Year 10 GCSE Design + Technology (1 decks)

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