Choosing Materials (Leaving Cert Engineering): Flashcards
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Practise the cards
15 cards from this deck
Materials selection
Materials selection
Process of choosing most appropriate material to meet specific requirements of an application
Ductility
Ductility
Ability to deform without breaking
Strength (material property)
Strength (material property)
Resistance to applied loads
Hardness
Hardness
Resistance to surface deformation
Toughness
Toughness
Ability to absorb energy before fracturing
Stiffness
Stiffness
Resistance to elastic deformation
Density
Density
Mass per unit volume
Thermal conductivity
Thermal conductivity
Ability to conduct heat
Corrosion resistance
Corrosion resistance
Ability to withstand chemical degradation
3 practical considerations in material selection
3 practical considerations in material selection
Cost, availability, and sustainability
How many stages in materials selection process?
How many stages in materials selection process?
Five stages
Stage 1 of materials selection
Stage 1 of materials selection
Define requirements
Tool used in Stage 3 to create shortlist
Tool used in Stage 3 to create shortlist
Ashby Charts
Consequence of insufficient yield strength
Consequence of insufficient yield strength
Structural failure
What % of product's environmental impact comes from material choice?
What % of product's environmental impact comes from material choice?
Up to 80%