Aircraft Materials \

What are metallic materials?

• Materials containing no metal

• Having the nature of metal or containing metal

• Only alloys of aluminum

What are non-metallic materials?

• Contain no metal

• Contain small iron content

• Contain high copper content

Which materials are ferrous?

• Contain no iron

• Iron or any alloy containing iron

• Only steel alloys

What are non-ferrous materials?

• Materials without iron

• Steel alloys only

• Metals with high carbon

Unit stress is defined as:

• Load per length

• Load per unit area

• Deformation per area

Stress that stretches or lengthens a material is:

• Compressive stress

• Torsion stress

• Tensile stress

Stress that shortens a material is:

• Tensile

• Compressive

• Shear

Stress that twists a material is:

• Shear

• Torsion

• Compressive

The maximum stress applied without permanent deformation is:

• Ultimate strength

• Yield strength

• Elasticity

Yield strength is defined as:

• Stress at which fracture occurs

• Maximum stress without permanent deformation

• Resistance to wear