Aerospace Materials Quiz

Which of the following materials was extensively used in early aircraft by the Wright Brothers?

• Titanium

• Wood

• Aluminum Alloy

• Composites

What is the most common alloy used in aerospace aluminum applications?

• 7075

• 7050

• 2024

• Inconel

Which property is not a key factor in material selection for aerospace components?

• Corrosion resistance

• Stiffness

• Transparency

• Toughness

Titanium is difficult to form because:

• It has a low melting point.

• It is affected by impurities like hydrogen, oxygen, and nitrogen.

• It cannot be machined.

• It is inexpensive.

Which material is flammable and prone to corrosion, requiring a protective finish?

• Magnesium

• Steel Alloy

• Ceramic

• Nickel Alloy

The centroid of a symmetrical object is:

• Located at the highest point of the object.

• Determined by its mass.

• Located on its line of symmetry.

• Always in the geometric center.

What is the mathematical property of a cross section that indicates resistance to deformation?

• Centroid

• Moment of Inertia

How does the orientation of a beam affect its resistance to deformation?

• Beams oriented with their width perpendicular to the load resist deformation better.

• Beams oriented with their width parallel to the load resist deformation better.

• Orientation has no effect on deformation.

• Orientation only affects deformation in composite materials.

What does the moment of inertia of a beam depend on?

• The material’s density and cost

• The cross-sectional area’s shape and orientation

• The length of the beam

• The external forces acting on the beam

Composite materials are often used in aerospace applications because:

• They are cheaper than metals.

• They provide both high strength and lightweight properties.

• They can withstand extreme heat without any modification.

• They are naturally abundant.