1. Role Of Materials In Design Flashcards
(22 cards)
Metals and alloys
Iron and steels
Aluminium (and alloys)
Magnesium (and alloys)
Beryllium (and alloys)
Nickel (and alloys)
Titanium (and alloys)
Ceramics and glasses
Zirconia
Alumina
Silica
Silicon carbide
Silicon nitride
Cements and concrete
Polymers (examples)
Polyethylene
Perspex
Nylon
Polyvinylchloride
Rubbers
Composites (examples)
Cermets (ceramic-metal)
Wood
Fibreglass
Carbon fibre composite
Filled polymers
Properties:Metals and alloys
Good conductor of heat and electricity
Low cost
Strong
Easy to form/malleable
Properties: polymers
Light weight
Appearance/colour choice
Low electrical conductivity
Corrosion resistant, tough like vinyl
Inexpensive
Easy to form
Properties: ceramics and glasses
Strong
Low thermal and electrical conductivity
Heat-resistant (used for coatings)
Resistance to wear
Properties: polymer composites
Strong
Light weight
Bulk mechanical properties of materials
Density
Modulus (stiffness)
Strength
Fracture toughness
Fatigue strength
Creep resistance
Surface properties of materials
Oxidation and corrosion
Friction and wear
Production properties of materials
Ease of manufacture
Ease of joining
Aesthetic properties of materials
Appearance
Texture
Feel
What is creep resistance
The ability of a material to resist any kind of distortion under the influence of stresses over a period of time
What is stiffness
How much give a material allows
(Bending)
What is strength
The ability to resist permanent bending
What is toughness
How likely a materialist to fracture
How brittle
Define modulus
An indication of the materials resistance to elastic deflection or bending
What is casting
Pouring liquid into a mould and let it solidify
-> power metallurgy is pouring a metal powder into a mould and pressing together to hold shape before sintering (heating but below melting point)
What is forging
Taking a solid and pressing it into shape in a die/mould
What is machining
Removing material from a larger piece to form a shape
What is joining/fabrication
Making complex shapes by joining pieces together
What sustainability factors affect manufacture and cost
Energy of manufacture
Energy for getting materials
Lifetime (efficiency, heat loss)
Disposal
Remanufacture
Finite elements
