TECHNICAL PAPERS: Gas Turbines: Ceramics

Modeling the Thermostructural Capability of Continuous Fiber-Reinforced Ceramic Composites

[+] Author and Article Information
J. A. DiCarlo, H. M. Yun

NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135

J. Eng. Gas Turbines Power 124(3), 465-470 (Jun 19, 2002) (6 pages) doi:10.1115/1.1470480 History: Received November 01, 1999; Revised February 01, 2000; Online June 19, 2002
Copyright © 2002 by ASME
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Grahic Jump Location
Larson-Miller master curves for the time/temperature-dependent rupture strength of single-oxide and SiC-based fibers and single multifilament tows as measured in air (a) from ambient to high temperature and (b) at high temperatures
Grahic Jump Location
Predicted rupture strength behavior and measured stress-rupture data for Hi-Nicalon and Syl-2 reinforced CMC tested at high temperatures in air. Solid and dashed curves are based, respectively, on the single-fiber and bonded-tow LM curves of Fig. 1.
Grahic Jump Location
Predicted maximum rupture strength capability for cracked 0/90 CMC reinforced by the most creep-resistant oxide and SiC-based fiber types currently available (Vf*=20%). For comparison, measured strength curves are shown for a state-of-the-art nickel-based superalloy and for two types of monolithic ceramics.
Grahic Jump Location
Effective 1000-hour rupture strength predicted for cracked SiC/SiC CMC with Syl-2 fibers that fracture independently and a cracked SiC/SiC CMC with oxide-bonded Sylramic fibers. Solid curves=no recession; dashed curves=lean-burn combustion (19). For comparison, strength curves are shown for a nickel-based superalloy (measured) and an oxide/oxide CMC (predicted).




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