Lecture 2

Question 1

Original design

Answer 1

Involves a new working principle
Involves consideration of all solutions and method of choosing between
New materials can offer properties which enable the design
Can demand the development of new/improved materials or process route

Question 2

Adaptive or developmental design

Answer 2

Slight advance in performance via refinement in working principle
Made possible through advances in materials

Question 3

Variant design

Answer 3

Change of scale or dimension with changing the function or method
May involve changes in materials

Question 4

Technical Systems

Answer 4

Consists of assemblies, which consists of components, each component (materials selection) is made up of a different material

Question 5

Design Process

Answer 5

Market need
|
Concept 
|
Embodiment 
|
Detail
|
Product

Question 6

Conceptual design

Answer 6

• All options are open and designer considers
• -> alternate working principles for the functions
• -> ways in which subfunctions are combined or separated
• -> implications of each scheme for cost and performance
• Approximate material property data needed

Question 7

Embodiment design

Answer 7

Starts with a function structure

Analyses its operation at an approximate level

Question 8

Detailed design

Answer 8

• Specifications for each component are drawn up
• Components may be subjected to precise mechanical or thermal analysis
• Optimisation methods are applied to components to maximise performance
• Design costed
• Materials and productions routes are chosen

Question 9

Function, material, shape, process

Answer 9

Function dictates choice of material
Shape is chosen to perform the function using the material
Process is influenced by material properties
Process interacts with shape
Shape and process restricts choice of materials

Question 10

Material Requirements of a beverage container

Answer 10

Rigid, Non-permeable, Strong, Low density, Resistant to chemical attack, Cheap

Question 11

Material Requirements of a bridge

Answer 11

Strength, Cost, Stiffness, Environment, Form (material can be produced in sufficient lengths to span the gap of the bridge), Longevity

Question 12

Material selection dependancy

Answer 12

• Requirements imposed by service conditions
• Requirements imposed by the proposed manufacturing route
• Cost