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Engineering Material Properties
Engineering Material Properties
By Kyle Smith
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Slide 1:
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Engineering
Further Education (Key Stage 5)
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Engineering Material Properties
By Kyle Smith
Slide 1 - Diapositive
Recall three key points from the previous lesson.
Slide 2 - Carte mentale
Material Properties
and their definitions.....
Slide 3 - Diapositive
What Do you know about a materials 'strength'?
Slide 4 - Carte mentale
STRENGTH
The ability of a material to resist external forces. It is called
tensile, compressive, or shear strength depending on the load.
Slide 5 - Diapositive
What do you know about 'material toughness'?
Slide 6 - Carte mentale
TOUGHNESS
Ability of a metal to absorb energy and deform plastically
before fracturing.
Work per unit volume required to fracture a metal
and is equal to the area under the stress strain curve.
Slide 7 - Diapositive
What does 'elasticity' mean in terms of a material?
Slide 8 - Carte mentale
Elasticity
The ability of a material to return to its original form after
the load has been removed.
Slide 9 - Diapositive
Describe the terms -Hardness and Brittleness in your own words.
Slide 10 - Carte mentale
Hardness
The property of metal to resist being permanently deformed.
This is divided into three categories, resistance to penetration, resistance
to abrasion and elastic hardness.
Slide 11 - Diapositive
Brittleness
The property of materials to not deform under load, but
to break suddenly, for example, cast iron and glass are brittle. Brittleness
is opposite to plasticity.
Slide 12 - Diapositive
Plasticity
The quality of material such that it can be deformed without
breaking. Clay is completely a plastic material. Metals exhibit plasticity
in varying amounts.
Slide 13 - Diapositive
Ductility
Slide 14 - Diapositive
Based on todays class, state two new things you have learned and why.
Slide 15 - Question ouverte
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