Acoustic Metamaterials
Properties: Acoustic metamaterials are artificial materials whose unique acoustic properties, such as negative refraction and sound wave focusing, are derived from their structural design rather than their chemical composition.
Applications:Acoustic metamaterials are artificial materials whose unique acoustic properties, such as negative refraction and sound wave focusing, are derived from their structural design rather than their chemical composition.
Acoustic Porous Materials
Properties: Porous materials have numerous micro or nanopore structures that effectively absorb sound waves and reduce noise. These materials include metal foams, aerogels, and polyurethane foams.
Applications: Sound-absorbing panels, noise barriers, and silencers.
Fiber Composites
Properties: Fiber composites, made from fiber materials (such as fiberglass and carbon fiber) and resin matrices, offer excellent sound absorption and noise insulation properties, while also being strong and lightweight.
Applications: Soundproof wall panels, building acoustic materials, and automotive acoustic components.
Damping Materials
Properties: Damping materials convert sound energy into heat, reducing vibration and sound propagation. These materials typically have high internal loss capabilities.
Applications: Vibration pads, soundproof coatings, and mechanical vibration damping devices.
Sound-Absorbing Coatings
Properties: Sound-absorbing coatings are made from specially formulated polymers or rubber materials. They can be sprayed onto surfaces to reduce reflection and absorb noise.
Applications: Aerospace, interior noise control in buildings, and acoustic design in ships.