Composite Material Properties Quiz: Test Your Knowledge

Question 1

In a composite material, which phase primarily contributes to the material's overall strength and stiffness?

Accepted Answer

Reinforcement phase

Answer

Void phase

Answer

Matrix phase

Answer

Interphase

Question 2

Which property of composites makes them suitable for applications involving high temperatures?

Accepted Answer

Thermal stability

Answer

Electrical conductivity

Answer

High strength-to-weight ratio

Answer

Lightweight

Question 3

Composites with a continuous reinforcement phase, like long fibers, typically exhibit:

Accepted Answer

Anisotropic properties

Answer

Brittle behavior

Answer

Homogeneous properties

Answer

Isotropic properties

Question 4

Which of the following is a common manufacturing method for polymer matrix composites?

Accepted Answer

Hand lay-up

Answer

Chemical Vapor Deposition (CVD)

Answer

Sputtering

Answer

Powder metallurgy

Question 5

The primary factor influencing the electrical conductivity of a composite material is:

Accepted Answer

Conductivity of the reinforcement phase

Answer

Volume fraction of reinforcement

Answer

Shape of the reinforcement

Answer

Conductivity of the matrix phase

Question 6

Which of the following is a potential drawback of using composites?

Accepted Answer

High cost

Answer

Lightweight

Answer

High strength

Answer

Corrosion resistance

Question 7

Composites with a high volume fraction of reinforcement generally have:

Accepted Answer

Increased strength and stiffness

Answer

Improved electrical conductivity

Answer

Reduced thermal expansion

Answer

Decreased toughness

Question 8

Composites that exhibit similar properties in all directions are classified as:

Accepted Answer

Isotropic composites

Answer

Orthotropic composites

Answer

Anisotropic composites

Answer

Quasi-isotropic composites