1.1 Materials and applications

Mechanical properties are associated with....

• how a material reacts to an external force

• the actual make-up or structure of the material

• the ability to being crushed or shortened

• the ability to absorb impact force without fracture

Physical properties are associated with...

• the actual make-up or structure of the material

• how a material reacts to an external force

• the ability to resist sliding forces on a parallel plane

• the ability to withstand twisting forces

Malleability is the ability of a material to

• withstand impact.

• resist indentation, abrasion and wear.

• be plastictally deformed by a compressive force.

• be plastically deformed by a tensile force.

The drill would need to have what property?

• Malleability

• Ductility

• Conductivity

• Hardness

Hardness is the ability of a material to

• resist indentation, abrasion and wear.

• carry an electrical charge.

• resist impact.

• to be drawn into a wire.

Toughness is

• the ability of a material to resist indentation, abrasion and wear.

• the ability of a material to withstand impact.

• carry an electrical charge.

• the ability to be draw into a wire.

Ductility is

• when a material can be plastically deformed into shape using a compresive force.

• the ability of a material to resist fracture from a tensile force

• when a material can be plastically deformed into shape using a tensile force.

• the ability of a material to resist fracture from a compresive force.

To draw a material into a wire the material would need to possess which mechanical property?

• Elasticity

• Malleability

• Tenacity

• Ductility

Which of the following is not a material property?

• Malleability

• Strength to weight ratio

• Magnetism

• Cost

What do materials undergoing plastic deformation do?

• Change their shape when under a load, but return to their original shape when the load is removed.

• Change their shape when under a load, but they remain permanently deformed when the load is removed.

• Break or crumble rather than change their shape under a load.

• Can easily be shaped by hammering or rolling, and they keep their new shape. Some materials can be more easily shaped when heated.