|About this Abstract
|MS&T21: Materials Science & Technology
|Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|3D Printed Ceramic Acoustic Liners for Aircraft Noise Reduction
|David Nevarez-Saenz, Ted Adler, Wei Wei, Bhisham Sharma
|On-Site Speaker (Planned)
Aircraft noise is a significant constraint to increasing aviation capacity, efficiency, and flexibility. Current push towards the development of air taxis and supersonic aircrafts is bound to further exacerbate community noise issues. Overall aircraft noise is typically dominated by the sound emitted from turbofan engines. Traditionally, aircraft noise is reduced by a combination of passive acoustic liners installed in the engine nacelle. Recent research shows that insertion of acoustic liners directly over the engine rotors provides substantially better noise attenuation. However, current state-of-the-art liners are unable to withstand the harsh pressure and temperature environment in such locations. In this presentation, we discuss the feasibility of 3D printing ceramic liners for aircraft engine noise applications. The liners are printed using a material extrusion technique and their acoustic properties are characterized under normal incidence conditions. Our results suggest that 3D printed ceramic liners offer a feasible solution for improved aircraft noise reduction.