Which category includes composite materials used in aircraft construction?

Which category includes composite materials used in aircraft construction?

• A. Metals
• B. Composites
• C. Ceramics
• D. Gases

Answer: (B)

Materials in aircraft are grouped by what they’re made of. Composite materials are formed by combining two or more constituents to achieve properties not possible with a single material. In aviation, this usually means a polymer resin matrix reinforced with fibers such as carbon or glass. This combination yields very high strength and stiffness for a given weight, along with good fatigue and corrosion resistance, which is why composites are used extensively in airframes, wings, and other structures. That distinctive approach places them in the composites category, separate from metals (like aluminum or titanium), ceramics (used for heat shields and wear-resistant parts), or gases (which aren’t a structural material category).

Materials in aircraft are grouped by what they’re made of. Composite materials are formed by combining two or more constituents to achieve properties not possible with a single material. In aviation, this usually means a polymer resin matrix reinforced with fibers such as carbon or glass. This combination yields very high strength and stiffness for a given weight, along with good fatigue and corrosion resistance, which is why composites are used extensively in airframes, wings, and other structures. That distinctive approach places them in the composites category, separate from metals (like aluminum or titanium), ceramics (used for heat shields and wear-resistant parts), or gases (which aren’t a structural material category).