Research Progress on Sound Absorption of Fiber-Based Materials and Their Composites

Compared with traditional materials, fiber-based materials have the advantages of light weight, easy processing and low cost, which make them have great application potential in the field of noise control. Recently, the comprehensive use of various sound absorption mechanisms to design fiber-based sound-absorbing materials has become a research hotspot. In this paper, the sound-absorbing structures of fiber-based materials are described from the perspective of structural design, aiming to elucidate the constitutive relationship between the structure and the sound absorption performance of the materials. Here, the effects of the fiber structure and the internal structure of the substrate on the sound absorption of fiber-based materials are highlighted. In addition, an in-depth summary of the structural design of fiber-based composites is presented based on the existing mainstream theoretical structures. These works provide new ideas for the structural design of sound absorbers based on fiber-based materials.