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Proceedings Paper

Integral acoustic control system for composite isogrid structures
Author(s): Michael L. Drake; James L. Koury; Thomas D. Kim; James A. Harvey
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Paper Abstract

This paper presents the details of the transmission loss test results for composite isogrid panels with different acoustic control systems (ACS) evaluated and the potential of these ACSs to function as mold materials. Two isogrid composite panels approximately two feet square with a skin thickness of 0.06 inch and a rib height of 0.6 inch were wound onto a silicon mold and cured in an autoclave at 350 degree(s)F. One panel had a center skin damping layer to enhance the basic damping of the panel. Comparative transmission loss measurements were made on aluminum flat panels (both solid and laminated with a damping material) and on an aluminum isogrid panel. Parallel to the transmission loss evaluations, the acoustic control materials were evaluated as a possible replacement of the silicon rubber as a mold material. These evaluations consisted of using the acoustic mold system during the fabrication and curing of the isogrid structure.

Paper Details

Date Published: 8 September 1993
PDF: 11 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152796
Show Author Affiliations
Michael L. Drake, Univ. of Dayton (United States)
James L. Koury, Air Force Phillips Lab. (United States)
Thomas D. Kim, Air Force Phillips Lab. (United States)
James A. Harvey, Univ. of Dayton Research Institute (United States)

Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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