Sintered Fiber Metal Composites for Aircraft Acoustic Attenuation

Sintered Fiber Metal Composites for Aircraft Acoustic Attenuation

Sintered fiber metal composites are used in aircraft as an acoustic media within environmental ducting, inlet and exhaust systems. The material can be engineered to meet specific acoustic attenuation and noise reduction goals. Sintered metal fiber composites may be the most cost- or space-effective approach that can survive requisite aircraft temperatures. The material is used to address internal cabin noise, which is a concern for passenger comfort, and external noise generated by turbines and exhaust, which is a form of regulated noise pollution. Specifying an acoustic liner requires balancing noise reduction with total area within the turbine occupied by the liner to maximize acoustic attenuation without impeding gas flow.

Find out more by reading the entire article, which appeared in Aerospace & Defense Technology Tech Briefs. View the article here.