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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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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