Which classification refers to a material made from two or more materials?

Which classification refers to a material made from two or more materials?

• A. Alloy
• B. Smart material
• C. Composite
• D. Modern material

Answer: (C)

Composite materials are made from two or more materials with different properties that are combined so they work together while keeping their own identities. The matrix binds the reinforcement, while the reinforcement—such as fibres or particles—provides strength or stiffness, giving a material that can be tailored for specific performance. This is why composites can be designed to be lightweight yet strong, like fibreglass (glass fibres in a polymer resin) or reinforced concrete (cement matrix with aggregates). Alloys, by contrast, are blends of elements (usually metals) at the atomic level, not distinct materials kept separate in a composite. A smart material changes its properties in response to a stimulus, which is a different concept. So the term that fits a material made from two or more materials is composite.

Composite materials are made from two or more materials with different properties that are combined so they work together while keeping their own identities. The matrix binds the reinforcement, while the reinforcement—such as fibres or particles—provides strength or stiffness, giving a material that can be tailored for specific performance. This is why composites can be designed to be lightweight yet strong, like fibreglass (glass fibres in a polymer resin) or reinforced concrete (cement matrix with aggregates). Alloys, by contrast, are blends of elements (usually metals) at the atomic level, not distinct materials kept separate in a composite. A smart material changes its properties in response to a stimulus, which is a different concept. So the term that fits a material made from two or more materials is composite.