Acoustic materials for jet engine noise reductions

Acoustic materials play a crucial role in jet engine noise reduction, which is a major environmental hazard near airports and military bases. They are designed to absorb and disperse strong sound waves produced by jet engines and, in doing so, minimize their effects on human health, animals, and the overall quality of the environment. There have been previous developments in the creation of several noise-reducing materials, such as porous absorbers, metamaterials, and composites, which are each specific to different frequencies and sources of noise. Still, the subject faces issues concerning material performance, weight, durability, scalability, and cost. This paper discusses the effectiveness of such materials and their current and potential applications in reducing aviation noise according to literature review, limitations, original research, and identification of directions for potential future research. [Work supported by James Madison University Mathematics Department.]