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RESEARCH PAPERS

Fiber Metal Acoustic Material for Gas Turbine Exhaust Environments

[+] Author and Article Information
M. S. Beaton

Brunswick Corporation, Technetics Division, Energy Conservation Systems, DeLand, FL 32724

J. Eng. Gas Turbines Power 111(1), 181-185 (Jan 01, 1989) (5 pages) doi:10.1115/1.3240221 History: Received September 30, 1987; Online October 15, 2009

Abstract

FELTMETAL® fiber metal acoustic materials function as broad band acoustic absorbers. Their acoustic energy absorbance occurs through viscous flow losses as sound waves pass through the tortuous pore structure of the material. A new FELTMETAL® fiber metal acoustic material has been designed for use in gas turbine auxiliary power unit exhaust environments without supplemental cooling. The physical and acoustic properties of FM 827 are discussed. Exposure tests were conducted under conditions that simulated auxiliary power unit operation. Weight gain and tensile strength data as a function of time of exposure at 650°C (1202°F) are reported. Fabrication of components with fiber metal acoustic materials is easily accomplished using standard roll forming and gas tungsten arc welding practices.

Copyright © 1989 by ASME
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