About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Architected Structures and Multifunctional Metamaterials
|
| Presentation Title |
Polymer Based Additively Manufactured Acoustic Sealing Components and Testing Thereof |
| Author(s) |
Ion Pelinescu, Yong Yeong, Andrew Loughner |
| On-Site Speaker (Planned) |
Ion Pelinescu |
| Abstract Scope |
This work describes the development and testing of additively manufactured linear components designed to function as gap sealing solutions which are needed in aerospace interior applications where strict vibration and acoustic isolation requirements are present. Potential uses include sealing interfaces between aircraft cabin partitioning elements (panels), such as avionics enclosures, and other noise-sensitive structural boundaries. The sealing components are based on thermoset polymer chemistry which supports low-temperature curing and forms elastomeric networks with high elongation, chemical resistance, sound-sealing, and vibration-damping characteristics. These components are fabricated via additive manufacturing processing. Acoustic performance is evaluated by using a custom designed sound transmission loss chamber. Acoustic measurements are conducted at room temperature, in an anechoic room, over 1/3-octave frequency bands with band center frequencies between 50 Hz to 12.5 kHz. The additively manufactured linear sealing components demonstrate high acoustic insertion loss across the full tested frequency spectrum relative to an open gap. |