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Study Decks > Tech > Flashcards

Tech Flashcards

1
Q

What’s the 2 main categories of wood?

A

Softwood, Hardwood

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2
Q

What’s properties of wood?

A

Durability, Stable, Toughness

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3
Q

What’s advantages of wood?

A

Can be recycled, Sustainable Material, Uniquely aesthetic

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4
Q

Whats disadvantages of wood?

A

Unwanted characteristics ie bowing, crooking, warping etc

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5
Q

Where do hardwood come from and examples of them are?

A

Deciduous trees

Remember BOAM

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6
Q

Where do softwoods come from and examples of them are?

A

Coniferous trees

Pine, Spruce, Cedar, Douglas Fir

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7
Q

What’s manufactured board made from?

A

Pulp, blocks, chips or strips

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8
Q

What’s good about Manufactured board?

A

Mostly inexpensive, bought in large sheets, have a flat surface ideal for smooth finish

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9
Q

What is plastic?

A

A synthetic material

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10
Q

What’s the properties of plastic?

A

Brittle, Flexible, Strength

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11
Q

What’s advantages of plastics?

A

Recyclability, Corrosion resistant, Easy to shape/mould

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12
Q

Whats disadvantages of Plastics?

A

Dust can be dangerous to inhale
Surfaces of certain plastics can scratch easily

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13
Q

What’s the 2 categories of plastic?

A

Thermoplastic, Thermosetting plastics

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14
Q

Describe thermoplastics?

A

They soften when heated and can be shaped and then harden as they cool, That process can be repeated over and over again as thermoplastics have plastic memory

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15
Q

Describe Thermosetting plastics?

A

When thermosetting plastics harden they cannot be reheated and reshaped
Usually used for products that need to withstand high temperatures

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16
Q

What’s the properties of metals?

A

Brittle, Durable, strength

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17
Q

Advantages of metals?

A

They can take a range of finishes from painting, oiling and polishing to plastic dip coating & electroplating

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18
Q

What’s disadvantages of metals?

A

Ferrous metals are prone to rusting
A finish will require maintenance
Metals are a finite resource

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19
Q

Describe ferrous metals?

A

Refers to any metal that contains iron
They rust over time with continued exposure to moisture and oxygen
They are magnetoc due to iron compound

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20
Q

Describe Non ferrous metals?

A

Contains no iron
Referred as pure metals
Not magnetic
Corrosion resistant
Can tarnish

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21
Q

What’s metal alloys?

A

When 2 or more metals are combined to create a new material
Ferrous alloys are produced to make iron more practical material
This can be done to make metals more asthetically pleasing

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22
Q

What’s an open brief?

A

When the designer has more creative control over the product

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23
Q

What’s a closed brief?

A

When the design has fine margins dosen’t have a lot of creative control

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24
Q

What’s a specification?

A

What the product your design must contains/ be able to do

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25
Q

What’s the primary function?

A

What the product has been designed mostly to do

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26
Q

What’s the secondary function?

A

What else a product can do

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27
Q

What’s Asthetics?

A

The study of beauty
Aesthetically pleasing products appeal to all of our senses

28
Q

What’s the 3 categories of ergonomics?

A

Anthropometrics, Phsiology, Psychology

29
Q

What’s ergonomics?

A

Study of how humans interact with everyday products

30
Q

What’s Anthropometrics?

A

Practice of taking measurements of the human body and provided categorised data that the designer can use

31
Q

What’s the percentile graph called?

A

The bell curve

32
Q

What’s psychology?

A

The study of human mind and behaviour

33
Q

What’s phsiology?

A

The area of ergonomics that deal with the physical capabilities, strength and limitations of the human body

34
Q

What’s a user trip?

A

A research activity a designer can do on an existing product

35
Q

What’s good about a questionnaire?

A

Fast efficient, can be given to large groups, can ask very specific questions, result can be put into graphs/charts

36
Q

What’s idea generation techniques?

A

Brainstorming, Morphological analysis & mood boards

37
Q

What’s sketch modelling?

A

Simple physical models that are easy to make
Made from low cost materials

38
Q

What’s block modelling?

A

Commonly used to communicate and develop the form, dimensions and surface details of the product

39
Q

What’s benefits of 3D computer modelling?

A

Reduced tooling costs/speeds up development stage.
Appropriate colours, materials, light sources can be added to make the product look realistic
Computer models can be seen in 360* view

40
Q

What’s technology push?

A

Describes how a product comes to the market based on new technologies, materials, manufacturing methods

41
Q

What’s market pull?

A

Describes consumer demand for a product
Companies produce more products based on needs/wants of the consumer

42
Q

What’s the process of injection moulding?

A

Plastics are heated until molten
A screw passes plastic through a heater to soften the plastic
Plastics then injected into mould
Remove the mould

43
Q

What’s rotational moulding?

A

Used to produce large hollow plastic products

44
Q

What’s the process of rotational moulding?

A

Plastic powder is weighted and placed into the mould
2 halved of mould are then joined together and sealed

45
Q

Describe vaccum forming?

A

Mould placed in bottom of vaccum former
Sheet of plastic is placed above mould
Mould is brung up and use vaccum switch to remove air and create mould
Remove the vac to introduce air then drop the bed back down

46
Q

What’s die casting?

A

Process that allows manufacture to form metal into complex designs with high degree of accuracy

47
Q

What’s identifying features of die casting?

A

Intricate detail
Sprue marks
Ejector pin marks

48
Q

What’s identifying features of sand casting?

A

Fettle marks, rough surface, tapered/filleted edges, marks where runner and riser have been

49
Q

What products are made from sand casting?

A

Parasol bases, anchors, pipe fittings, machine/engine parts

50
Q

What materials are used in sand casting?

A

Zinc aluminium bronze brass as they have low mp

51
Q

What materials are used in die casting

A

Zinc aluminium magnesium brass as they are metals/alloys with low melting points

52
Q

Describe standard components?

A

Known as knock down fittings
Used in flat-pack furniture
Make the manufacture of a product easier
Make it easy to get replacement parts

53
Q

What’s impact on society?

A

Impact of design & manufacture technologies

54
Q

What can changes to the workforce lead to?

A

Loss of specialist craft skills
Unstable jobs
Increased unemployment
Closure of factories
Decline of industrial towns

55
Q

Why has there been a rise in consumerism?

A

Due to increased global population & the introduction and availability of affordable products

56
Q

Explain designer/manufacturers responsibilities?

A

They have a responsibility towards the environment especially for mass manufactured products

57
Q

What recommendations should designers make?

A

Using alternative materials can be recycled
Reducing volume of material
Reducing the number of parts/ components

58
Q

What are examples of non-ferrous metals?

A

Aluminium, copper, tin, titanium, zinc

59
Q

What are example of ferrous metals?

A

Iron, mild steel, stainless steel

60
Q

What are examples of thermoplastics?

A

Polypropylene, Polystyrene, Acrylic, Nylon

61
Q

What are examples of thermosetting plastics?

A

Epoxy Resin, Fibreglass, Melamine Formaldehyde

62
Q

How do you prep a blank on wood turning lathe?

A

Mark diagonals w steel rule
Cut one end w tenon saw hole punch the other
Mark corners w marking gauge
Plane the corners till octagon shape

63
Q

What do you use to make pilot holes in wood?

A

Hand Drill

64
Q

Why might wax be used instead of varnish when applying to wood?

A

Applied quicker using a cloth
Gives an alternative aesthetic quality

65
Q

Why might a former be used to make bowls from acrylic?

A

To make sure the bowls are identical
Quicker when making more than one

66
Q

Why mite a specification be used during development?

A

To give guidance during design process
Used as an ongoing evaluation tool

67
Q

Why might you use computer generated graphics during development?

A

Suitable to show client
Dosen’t use materials like physical ones
Alterations can be made quickly

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