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Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing
Conference proceeding   Open access

Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing

Alden Packer, C. Aaron Reimann, Julian Winkler, Kenji Homma, Jeffrey M. Mendoza, Eric Greenwood, Michael Manahan and Nicholas Meisel
Annual International Solid Freeform Fabrication Symposium, 36
2025
Appears in  Aviation Sustainability Center (ASCENT)
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Abstract

ASCENT Noise Pollution
Acoustic liners are integral to the noise management of aircraft engines. As such, acoustic liner designs and configurations are the subject of research and development to address the acoustic requirements of next generation engine layouts. Perforate sheet over honeycomb core, or single degree of freedom (SDOF) liners and double degree of freedom (DDOF) liners are traditional designs that have been used in turbofan engines for many years to reduce noise. Leveraging the design freedom of additive manufacturing, our current research explores the use of triply periodic minimal surface (TPMS) lattices as an advanced core structure for acoustic liners. In this study, previously developed design exploration methods are applied to identify and compare the performance of novel TPMS acoustic liners to SDOF and DDOF liners. The comparisons are used to assess the viability of TPMS-based novel acoustic liner designs and justify the need to further explore through future research efforts.

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