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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

A Scientific Approach to the Process Development Bonded Attachments for High-Speed Rotor Application

[+] Author and Article Information
R. R. Cairo

Pratt and Whitney P.O. Box 109600, M/S 714-03, West Palm Beach, FL 33410-9600

K. A. Sargent

Air Force Research Laboratory AFRL/PRTC 1950 Fifth Street, Wright-Patterson AFB, OH 45433-7251

J. Eng. Gas Turbines Power 124(1), 190-195 (Feb 01, 2000) (6 pages) doi:10.1115/1.1414131 History: Received November 01, 1999; Revised February 01, 2000
Copyright © 2002 by ASME
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References

Figures

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Microstructure of metallurgical bond between single crystal and equiaxed nickel
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Line-on-line contact results in unacceptably high stresses in delta-alpha tooling
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Attempts to desensitize tooling with geometric compliance
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The sensitivity of bond pressure to material compliance
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Platform hook and spring concept
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Neck/pedestal fork concept
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Bond pressure distribution due to fork stiffening and cylindrical curvature
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Bond pressure distribution due to geometric realignment in center region of fork
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Contact zones on bond plane
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Wedge loaded neck/pedestal
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Combined spring and wedge loaded neck/pedestal
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Universal tool assembly allowing the spring or wedge approach

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