SAFRAN AIRCRAFT ENGINES (20240239025). ACOUSTIC METAMATERIAL AND METHOD FOR THE ADDITIVE MANUFACTURING THEREOF simplified abstract

ACOUSTIC METAMATERIAL AND METHOD FOR THE ADDITIVE MANUFACTURING THEREOF

Organization Name

SAFRAN AIRCRAFT ENGINES

Inventor(s)

Josué Costa Baptista of Québec (CA)

Edith-Roland Fotsing of Québec (CA)

Annie Ross of Québec (CA)

Jacky Novi Mardjono of Moissy-Cramayel (FR)

Jean Boulvert of Moissy-Cramayel (FR)

Daniel Therriault of Québec (CA)

ACOUSTIC METAMATERIAL AND METHOD FOR THE ADDITIVE MANUFACTURING THEREOF - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240239025 titled 'ACOUSTIC METAMATERIAL AND METHOD FOR THE ADDITIVE MANUFACTURING THEREOF

The present invention pertains to an acoustic metamaterial and a method for manufacturing the same. The acoustic metamaterial consists of channels or columns with a hydraulic radius between 5 and 300 µm, arranged with a periodic spacing between 2 and 600 µm to create a highly dense network for optimal acoustic absorption and impedance across a wide frequency range. The manufacturing method involves additive manufacturing with consecutive material deposition steps to form layers with periodically repeated cells separated by walls, stacked to align the cells and create channels.

• Channels or columns in the acoustic metamaterial have a hydraulic radius between 5 and 300 µm.
• Channels or columns are arranged with a periodic spacing between 2 and 600 µm.
• Additive manufacturing method involves consecutive material deposition steps to form layers with periodically repeated cells.
• Layers are stacked to align cells and create channels for optimal acoustic properties.
• Highly dense network provides optimal acoustic absorption and impedance over a wide frequency range.

Potential Applications: - Soundproofing in buildings - Noise reduction in industrial settings - Acoustic panels for recording studios - Improving audio quality in speakers and headphones

Problems Solved: - Inadequate acoustic absorption - Limited impedance control - Narrow frequency range coverage

Benefits: - Enhanced acoustic performance - Versatile applications in various industries - Improved sound quality and clarity - Customizable design options

Commercial Applications: Title: Advanced Acoustic Metamaterial for Enhanced Sound Control This technology can be utilized in architectural design, automotive manufacturing, consumer electronics, and aerospace industries to improve soundproofing, noise reduction, and audio quality.

Questions about Acoustic Metamaterial: 1. How does the hydraulic radius of the channels impact the acoustic properties of the metamaterial? The hydraulic radius affects the efficiency of sound absorption and impedance control in the material, with smaller radii providing better performance.

2. What are the advantages of using additive manufacturing for creating the acoustic metamaterial? Additive manufacturing allows for precise control over the design and structure of the material, enabling the creation of complex geometries for optimal acoustic performance.

Original Abstract Submitted

embodiments of the present invention relates to an acoustic metamaterial, as well as to a method for manufacturing the same. the acoustic metamaterial includes a plurality of channels or columns each having the same cross-section with a hydraulic radius between 5 and 300 �m, which channels or columns are arranged with a periodic spacing between 2 and 600 �m. this results in a highly dense network that can provide optimal acoustic absorption and/or impedance over a wide frequency range. the method for manufacturing the same includes additive manufacturing with a plurality of consecutive material deposition steps to form, in each step, a layer comprising a plurality of periodically repeated cells separated by walls. the layers deposited in the consecutive material deposition steps are stacked with their respective cells aligned to form channels.