Design Flashcards

1
Q

Explain the benefits of using computer aided design in the development of products

A

Easier to alter the design
 Library of parts
 Carrying out testing such as stress analysis
 Easily rendered to provide visuals/animations for clients
 Easier to communicate design information with other members of the design team (collaborative working)
 Easily sent for rapid prototyping
 Reduced cost of physical modelling
 Quicker than physical modelling
 Production drawings easily created
 Assisted production planning
 Parts lists easily created

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2
Q

Describe appropriate methods of carrying out research into the needs of the target market

A

Focus groups
 Questionnaires/Surveys
 Analysis of market trends
 Analysis of ergonomic data

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3
Q

Describe appropriate methods of carrying out research into the performance of an existing product

A

User trials
 User trips
 Test rigs
 Analysis of existing data (performance specifications)

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4
Q

Give an example of the type of information found in the following specifications.
* Product design specification
* Marketing specification
* Technical specification

A

Product Design Specification
A product design specification is produced before designing begins and would be used to specify design intent:
 Intended performance
 Intended function
 Intended aesthetic appeal
 Intended ergonomic aspects
 Intended target market/user

Marketing Specification
A marketing specification is produced prior to launching a product’s advertising and marketing plan and would be used to identify:
 Intended market size in term of volume
 Target market/consumer
 Retail price
 Any unique selling points (USPs)
 Market sectors
 Methods of advertising
 Advertising budgets

Technical Specification
A technical specification is produced after the product is designed and tested to identify:
 Materials
 Dimensions
 Weights
 Maintenance cycles
 Performance
 Power supply
 Fuel used
 Comply with safety standards

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5
Q

Sketch models, test models and prototypes may be used at different stages of the design process.
Explain the purpose of each model type and how the information gained may advance the design of a product

A

Sketch models are used to:
 Quickly produce concept ideas
 Quickly produce development ideas
To assist with development of:
 Functional factors
 Ergonomic factors
 Aesthetic factors

Test models are used to:
 check a range of issues associated with products and their components
To provide information on:
 Functional suitability/efficiency/performance/working environment
 Structural suitability of product
 Material performance
 Compliance with Health & Safety regulations
 Product lifespan/obsolescence
 Allow alterations to be made

Prototypes are used to:
 Test a fully working product/component
 Assist with marketing
 Provide clients with a fully working product (for testing)
 Check for flaws
Information gained:
 Allow alterations to be made before beginning production
 Ensure that the final product meets the given brief/performance issues
 Allow testing by potential customers/focus groups
 Gauge the market opinion

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6
Q

Explain why standard components are used in production

A

Assumed quality of bought components
 Reduced production costs
 Supplied in common sizes/ratings
 Ease of replacement by consumer
 Allows parent company to focus on development of their product by outsourcing

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7
Q

Describe the steps that the company could take to maintain or improve the product’s market share throughout its life

A

Reduced price to improve sales
 Increase marketing/advertising
 Celebrity endorsement
 Use alternative or cheaper materials
 Purchase components from more economical suppliers (reduced costs)
 Use more efficient manufacturing processes (reduced costs)
 Available in a range of colours (target market choice)
 Minor changes to functionality
 Minor changes to aesthetics

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8
Q

Explain the advantages of using composite materials

A

Explanations are likely to be drawn from:
 Individual properties blend to give the composite improved properties
 Aesthetics
 Durability
 Rigidity
 Impact resistance
 UV resistance
 Reduced corrosion
 Strength/weight ratio
 Increased dimensional stability
 Part Consolidation i.e. one composite part as opposed to various
assembled parts
 Design flexibility (easier to form)

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9
Q

Describe how production methods and planning systems are used to improve efficiency

A

Production methods
 One-off production (prototypes), Batch production, Mass production,
Line, Flow, Use of jigs/fixtures, Use of patterns, Use of standard components, CAD/CAM, CNC machining (automation), Rapid prototyping, JIT, Sub-contracting, Quality control

Planning systems
 Gantt charts, Flow charts or any other sequence planning method
An understanding of appropriate use of production methods and planning systems and the effects they have on manufacturing efficiency, such as:
 Lead-time
 Product inventory
 Purchase inventory/storage of component parts reduced
 Delays in purchasing of components
 Maximising output/less hours lost in production time
 Maximising workforce/labour requirements
 Maximising efficient use of plant machinery
 Production to satisfy customer needs
 Structured project planning of production (JIT)
 Increased quality assurance and control of production
 Increased productivity
 Reduction in stock wastage
 Reduction in manufacturing costs

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10
Q

Describe one advantage and one disadvantage of an open brief

A

An open brief would give the designer more creative freedom
 An open brief would enable the possibility of more innovative ideas
 An open brief could lead the designer to produce designs that are unsuitable
 An open brief may not give the designer enough information to fully understand client needs

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11
Q

Describe idea generation techniques

A

brainstorming/thought showers
 morphological analysis
 technology transfer
 analogy
 lateral thinking
 pencil for a walk/SAM
 lifestyle/mood board
 SCAMPER (may be done through sketch modelling)
 biomimicry.
Any other suitable answer.
Brainstorming is carried out as a group activity. The problem
is stated in a simple manner and members of the group
suggest solutions. (1 mark) All suggestions should be
welcomed and there should be no criticism of any ideas.
(1 mark) Group members are also encouraged to build on
each other’s ideas. (1 mark)
In morphological analysis a table is made with columns of
different options. (1 mark) One item from each column is
selected at random to provide a description of a possible
design. (1 mark)

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12
Q

Describe the impact of fully automated manufacturing technology on people and society

A

reduced work force
 demand for skilled workforce
 workers will have to learn new skills
 de-skilling of work force
 changed work patterns
 mass consumerism/products produced at lower cost,
society can easily afford
 population migration
 environmental impact (do not accept pollution)

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13
Q

Describe how consideration for environmental issues has impacted on the design and manufacture of products

A

 using recyclable materials
 materials from sustainable sources
 labelling of plastic components to assist recycling
 use of recycled materials in the manufacture of the
product
 use of processes that do not cause harm to the
environment
 manufacture of the product close to the market to
minimize transport
 efficient machinery
 easily dismantled products
 easily transported (lightweight/stackable)
 reduced volume of material used in each product
 reduce number of materials used
 reduce number of processes used
 minimise waste (during production)
 reuse components
 reduced or no packaging
 efficient in use (‘A’ rated products)
 use of ‘green’ materials as an alternative
 use of renewable energy for production
 use of durable materials to increase lifespan of product.
Any other suitable answer.
Designing cars to be run using electricity has had an impact
on the environment by reducing the volume of pollutants into
the atmosphere (1 mark), this can also be achieved in fuel
driven cars by designing them to be more aerodynamic.
(1 mark)

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14
Q

Describe technology push and market pull and give an example of how each has influenced the design of products

A

Technology push is when research and development in new
technology drives the development of new products. It tends
to start with a company developing an innovative technology
and applying it to a new product.
It is likely that candidates will draw from common
technology push aspects such as:
 touch screen technology
 3D graphics ability
 miniaturisation
 wi-fi capability
 improving audio technology
 improvements in graphics/video technology
 compatibility with existing products/previous version(s) of
product
 health and fitness benefits
 increased memory capability
 ‘cloud’ storage
 new/improved materials.

The term market pull refers to the need/requirement for a
new product or a solution to a problem, which comes from
the market place. The need is identified by potential
customers or through market research. A product or a range
of products are developed, to solve the original need.
It is likely that candidates will draw from common market
pull aspects such as:
 need for accessibility
 affordability
 portability
 improved quality (of product)
 online features
 compatibility with existing products/previous version(s) of
products
 health and fitness benefits
 different pull from different age groups
 aesthetics – colour/style options
 add-ons – different accessories.

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15
Q

Describe two benefits of using rapid prototyping

A

reduced lead times (quicker to market)
 reduced costs incurred in R&D mean products which were
marginal become profitable
 accuracy of model
 model/components made in actual material for testing
 ability to edit and make changes to the design relatively
quickly
 reduced outsourcing to specialist model makers

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16
Q

Describe a method that could be used to test the performance of a product and
identify the type of information that could be gained

A

user trial
 user trip
 test rig
 simulation testing
Two valid points at one mark each.
Responses are likely to include:
 ease of use
 ease of maintenance/ease of cleaning
 durability of construction
 ergonomic issues (comfortable to hold etc.)
 functional issues (fit for purpose)
 battery life/recharge time
 materials testing (component parts, durability, continual
use etc.)
 environmental testing (energy performance etc.)
 compatibility with accessories
 feedback to design team (flaws/potential improvements)

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17
Q

Describe what is meant by planned obsolescence and give an example of how this has influenced the design of a product

A

Planned obsolescence is a strategy used in the design of
products to give the product a specific lifespan to cause the
product to be perceived as obsolete before it actually needs to be replaced.
One mark for example of how it has influenced a product.
Responses may include:
 changes in fashion/style
 ability to change parts of the product eg covers, personalisation
 durability of parts, materials and construction
 maintenance/replacement issues
 compatibility of software/hardware
 technology slowing down/lagging

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18
Q

A designer will work with a range of people when developing products.
These include:
* accountants
* material technologists
* production specialists
* marketing teams.
Describe the role of these people and how they influence each other’s decisions
during the development of products

A

 Accountant - Budgets the project. Offers advice to the
designer on the costing of the project, restrictions, etc. An
Accountant would be responsible for overseeing all the
costs related to the design and manufacture of the
product. They would be responsible for managing the
profit and losses and would liaise directly with the client
and other specialists during the process.
 Materials technologist - Has knowledge of materials and
their properties. Offers advice to the designer about the
materials which would be best suited to the job, taking
into consideration their properties, working
characteristics, cost, availability, etc. The materials
technologist provides advice on the selection of suitable
materials for manufacture of the product depending on
the target market. They work closely with production
specialists to ensure that any materials selected are suited
to the methods of production available.
page 25
Question Expected response Max
mark Additional guidance
6.  Production specialist - Has strong knowledge of available
processes and offers this to the designer during certain
stages of the design process. Will try to find the most
suitable method of production for a product by taking into
consideration economics, environmental concerns,
materials, availability, etc. Production specialists provide
advice on production planning and tooling for
manufacture. They liaise with engineers and material
technologists to ensure that the product is produced as
efficiently as possible.
 Marketing team - Carries out research on what consumers’
wants/needs are. Compiles findings and presents to the
designer. Is involved in the advertising and promotion. Aids
with sales of the product.
NB candidates must refer to the influence specialists have
on each other’s decisions to achieve marks in the top two
bands

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19
Q

Outline two considerations which would influence the selection of a production system

A

demand for product
 machinery available
 certain components might need to be mass produced
 how quickly parts are required
 flexibility of design (shape/form etc)
 economies of scale
 standardisation (identical parts)
 affordability
 materials to be used

20
Q

Explain the benefits of a strong brand image

A

sets the product apart from competition
 allows easy recognition of product
 gives greater advertising opportunities
 consumers might pay more for trusted brand
 consumers may have brand loyalty
 consumers more likely to purchase a brand that are familiar with
 consumers might insist on buying a particular brand
 the reputation of the brand is important to the consumer
 the brand can command a higher selling price

21
Q

Describe the of the stages of the product life cycle

A

Stage A — Introduction: the company seeks to build product awareness and develop a market for the product.
Stage B — Growth: the company seeks to build brand preference and increase market share.
Stage C — Maturity: strong growth in sales diminishes. Competition may appear with similar products. The main objective at this point is to defend market share while maximising profit.
Stage D — Decline: sales decline. The company can possibly rejuvenate the product adding new features and finding new uses

22
Q

Describe a range of methods that could be used to identify materials

A

testing
— flame test
— float test
— scratch test
— cut test
— magnetic
 identification symbols
 comparisons to other materials
 aesthetic aspects.

23
Q

Explain the purpose of location pins, bosses and ribs/webs

A

Location pins
 used to ensure the accurate positioning of a work piece
 adds product strength, less likelihood of movement of each part.
Bosses
 incorporate a space for a thread/bolt/screw for assembly
 adds component strength for the thread/bolt.
Ribs/webs
 add strength and rigidity to the finished component
 allow the material to flow evenly into all areas of the mould
 allow location of internal components.

24
Q

Describe benefits of symbols and labels for the consumer

A

recyclable material
 made from recycled material
 identify base material
 information on breaking down product into recyclable parts
 identify food grade plastics
 non-toxic
 dishwasher safe
 microwave compatible
 meets BS and CE safety standards
 explanation of function (direction for opening)
 branding

25
Q

Describe how graphics can be used effectively at different stages in the design process.
You should make reference to different types of graphics to support your answer

A

Descriptions are likely to make reference to some of the aspects below
 variety of graphics available. (2D/3D sketch, orthographic, oblique, one-point
perspective, isometric, two-point perspective, exploded/assembly, sectional,
scale drawing, working drawing, rendered — all can be manual or CAD.)
Idea generation
Graphics used at this stage are mainly exploratory. Simple, quick sketches outlining
the basic idea. No need for too much detail or rendering.
 freehand and carried out at a fast pace
 range of 2D/3D sketches
 oblique
 isometric
 perspective.

Development — exploration/refinement
Graphics used at this stage are initially exploratory and will become progressively
more detailed.
 designer will still be problem solving, graphics may still be produced quickly
 some explanatory graphics may begin to appear to help visualise emerging
details
 range of 2D/3D sketches
 pictorial drawings
 scale drawings
 orthographic/dimensioned drawings of emerging details
 exploded sketches of emerging details
 sectional sketches of emerging details rendered views. (manual/CAD)

Production
Graphics used at this stage are to aid production. These will be rich in information
containing sufficient detail to allow prototypes to be made and final manufacture
to take place. These graphics require a high degree of accuracy.
 dimensioned orthographic drawings/working drawings — produced on CAD or
with drawing equipment
 sectioned orthographic
 exploded.

Presentation
Graphics used at this stage are mainly presentation/promotional. These graphics
would be used to communicate the design to the client and for advertising
purposes. These must not be too technical as the client may not understand them.
 must provide a very clear image that is visually appealing
 graphics should look as realistic as possible
 manual rendered illustration
 render CAD illustration/animations

26
Q

Plastics that are good electrical insulators

A

Melamine formaldehyde, Urea formaldehyde, polyester resin

27
Q

Advantages of thermoset

A

high impact strength
* scratch resistance
* heat resistance
* chemical/stain resistance
* range of colours available
* hygienic
* dishwasher safe
* durable (resistant to wear)
* tasteless/odourless

28
Q

P+U of ABS

A

Chemical resistant, durable, strong, scratch resistant, high surface finish.
Cases for products, helmets, kitchenware, telephones

29
Q

P+U of Polypropylene

A

Chemical resistant, light, rigid, resistant to bending and fatigue
Crates, seats, medical, equipment, kitchen chopping boards, hinges

30
Q

P+U of Nylon

A

Durable, tough, easily machined, self lubricating
Bearings, bristles, clothing and upholstery, gears

31
Q

P+U of Acrylic

A

Stiff, hard, clear, durable, easily machined and polished, easily scratched
Cases, jewellery, reflectors and lenses for lights, signs

32
Q

P+U of PVC

A

Soft, flexible, electrical insulator
Hosepipes, wire insulation.

33
Q

P+U of stainless steel

A

tough, ductile, higher tensile strength that mild steel, high resistance to corrosion
Cutlery, kitchen winks, door handles

34
Q

P+U of mild steel

A

tough, ductile, good tensile strength that mild steel, reasonably malleable, low resistance to corrosion
Car bodies, girders

35
Q

P+U of cast iron

A

Hard, brittle, strong in compression, weak in tension, self lubricating, low resistance to corrosion

36
Q

P+U of Aluminium

A

soft, ductile, malleable, good strength to weight ratio, lightweight, high resistance to corrosion

37
Q

Examples of Hardwood

A

Oak, Mahogany, beech

38
Q

Examples of Softwood

A

Pine, cedar, spruce

39
Q

Examples of manufactured boards

A

Plywood, hardboard, MDF, Chipboard, blockboard

40
Q

Advantages of woods

A

Easily worked, grain structure, sustainability

41
Q

Explain why vacuum forming is a suitable process

A

sheet material can be used
 low tooling cost
 economies of scale
 repeatability
 appropriate to material/thermoplastics
 patterns/textures transferred from the mould

42
Q

Explain why compression moulding is a suitable process

A

economies of scale (do not accept just ‘mass production’)
* components are a suitable form for the process
* process is suitable for thermosetting plastics
* little or no wasted material
* very accurate with little shrinkage
* it is a high-volume, high pressure method suitable for moulding complex shapes
* one piece production
* relatively low-cost production method
* quality surface finish/detail
* repeatability.

43
Q

Why are draft angles and ribs used

A

Draft angles
 Allow the component to be easily removed from the mould at the end of the production cycle
 Reduces wear on mould components
Webs/Ribs
 Add strength and rigidity to the finished component
 Allow the plastic to flow evenly into all areas of the mould
 Allow location of internal components

44
Q

Why do Rotational Moulding

A

Costs are low, quick production, large scale and small scale products, hollow form, complex surface detail, good finish.

45
Q

Manufacturer considers . . . in order to pick process

A
  • Volume of production
  • Cost of production
  • Size of components
  • Speed of production
  • Tooling costs
  • Level of accuracy and quality of finish