Characterization of Ceramic Matrix Composite Fasteners Exposed in a Combustor Linear Rig Test

[+] Author and Article Information
M. J. Verrilli, D. Brewer

NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135-3191

J. Eng. Gas Turbines Power 126(1), 45-49 (Mar 02, 2004) (5 pages) doi:10.1115/1.1639005 History: Received December 01, 2001; Revised March 01, 2002; Online March 02, 2004
Copyright © 2004 by ASME
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Brewer,  D., 1999, “HSR/EPM Combustion Materials Development Program,” Mater. Sci. Eng., A, 261, pp. 284–291.
Brewer, D., Ojard, G., and Gibler, M., 2000, “Ceramic Matrix Composite Combustor Liner Rig Test,” Proceedings of Turbo Expo 2000: ASME Turbo Expo, Land, Sea & Air, May 8–11, Munich, Paper No. TE00CER03-03.
Ojard, G., Stephan, R., Naik, R., Gibler, M., Cairo, R., Linsey, G., Hornick, J., and Brewer, D., 2000, “NASA Rich Burn Quick Quench Lean Burn Sector Rig SiC/SiC CMC Testing,” Proceedings of 24th Annual Conference onComposites, Materials, and Structures, Cocoa Beach, FL., Jan.
Miller, R. J., Moree, J. C., and Jarmon, D. C., 1998, “Design and Validation of High Temperature Composite Fasteners,” Proceedings of the 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Long Beach, CA., Apr. 20–23, 1998, AIAA Paper 98-1998.
Verrilli, M., Martin, L., and Brewer, D., 2002, “RQL Sector Rig Testing of SiC/SiC Combustor Liners,” NASA Technical Memorandum 2002-211380, Mar.
More,  K. L., Tortelli,  P. F., and Walker,  L. R., 2001, “Effects of High Water Vapor Pressures on the Oxidation of SiC-Based Fiber-Reinforced Composites,” Mater. Sci. Forum, 369–372, Part I, pp. 385–393.
Robinson,  R. C., and Smialek,  J. L., 1999, “SiC Recession Caused by SiO2 Scale Volatility Under Combustion Conditions: I, Experimental Results and Empirical Model,” J. Am. Ceram. Soc., 82(7), pp. 1817–1825.
Verrilli, M., 1998, unpublished data.


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Schematic of SiC/SiC fasteners. Dimensions are in mm.
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Combustor liner fastener assembly
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Configuration of the rich-burn, quick-quench, lean-burn (RQL) SiC/SiC sector rig
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Damage of fasteners after removal from the sector rig
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Cross sections of SiC/SiC fasteners, (a) as-manufactured, (b) exposed for 145 hours. The arrow indicates the head region of both fasteners.
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Configuration for tensile testing of SiC/SiC fasteners
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Failure modes of tensile-tested SiC/SiC fasteners, (a) as-manufactured material, (b) “ear” shear failure of exposed material, (c) failure associated with pre-existing cracks
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Failure mode versus failure load for SiC/SiC fasteners tensile tested at 25°C
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Lean transition liners, (a) as-manufactured part, (b) installed in the sector rig
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Lean transition liner fastener failure loads after exposure in the sector rig




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