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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Investigation of Three-Dimensional Stress Fields and Slip Systems for fcc Single-Crystal Superalloy Notched Specimens

[+] Author and Article Information
Nagaraj K. Arakere, Shadab Siddiqui

Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611-6300

Shannon Magnan

Lieutenant Junior Grade, U.S. Navy Reserve

Fereshteh Ebrahimi, Luis E. Forero

Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6300

J. Eng. Gas Turbines Power 127(3), 629-637 (Jun 24, 2005) (9 pages) doi:10.1115/1.1850939 History: Received October 01, 2003; Revised March 01, 2004; Online June 24, 2005
Copyright © 2005 by ASME
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References

Figures

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Finite element analysis, specimens, and orientations 32
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3D Finite element model of specimen A with a close-up view of the notch 31
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(a) Close-up view of element sizing on the specimen front face near the notch and (b) Radial and angular coordinates used for producing slip sector plots 32
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(a) RSS values (specimen A) for the 12 slip systems, as a function of theta, at r=5*ρ on surface 32; and (b) RSS values (specimen A) for the 12 slip systems, as a function of theta, at r=5*ρ on midplane 32
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Dominant and active slip systems at the surface of specimen A as a function of θ and r32
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Experimental slip field results on the surface for specimen A
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Experimental slip field results on the surface for specimen B
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Dominant and active slip systems at the surface of specimen B as a function of θ and r32

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