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Perforate Sheet Concepts for Improved Low-Frequency Absorption of Acoustic LinersTwo perforate sheet concepts are presented that attempt to improve the lower frequency absorption characteristics of acoustic liners: hole-clustered facesheet and bent-perforation-path facesheet. The theory behind each will be discussed, and normal incidence experimental data will also be shown to demonstrate acoustic benefits. Preliminary modeling efforts are in work and will be discussed as well.
Document ID
20240002701
Acquisition Source
Langley Research Center
Document Type
Presentation
Authors
Jordan Kreitzman (Langley Research Center Hampton, United States)
Date Acquired
March 1, 2024
Subject Category
Acoustics
Meeting Information
Meeting: Acoustics Technical Working Group Meeting
Location: Hampton, VA
Country: US
Start Date: March 19, 2024
End Date: March 20, 2024
Sponsors: Langley Research Center
Funding Number(s)
WBS: 081876.02.07.19.01.02.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
acoustic liner perforate sheet low frequency absorption

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