Creep deformation and rupture experiments are conducted on samples of the Ni-base superalloy directionally solidified GTD-111 tested at temperatures between and and two orientations (longitudinally and transversely oriented). The secondary creep constants are analytically determined from creep deformation experiments. The classical Kachanov–Rabotnov model for tertiary creep damage is implemented in a general-purpose finite element analysis (FEA) software. The simulated annealing optimization routine is utilized in conjunction with the FEA implementation to determine the creep damage constants. A comparison of FEA and creep deformation data demonstrates high accuracy. Using regression analysis, the creep constants are characterized for temperature dependence. A rupture prediction model derived from creep damage evolution is compared with rupture experiments.
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e-mail: calvin.stewart@knights.ucf.edu
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April 2011
Research Papers
Characterization of the Creep Deformation and Rupture Behavior of DS GTD-111 Using the Kachanov–Rabotnov Constitutive Model
Calvin M. Stewart,
Calvin M. Stewart
Department of Mechanical, Materials, and Aerospace Engineering,
e-mail: calvin.stewart@knights.ucf.edu
University of Central Florida
, Orlando, FL 32816-2450
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Ali P. Gordon,
Ali P. Gordon
Department of Mechanical, Materials, and Aerospace Engineering,
University of Central Florida
, Orlando, FL 32816-2450
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Erik A. Hogan,
Erik A. Hogan
Department of Mechanical Engineering,
University of Colorado at Boulder
, Boulder, CO 80309
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Ashok Saxena
Ashok Saxena
College of Engineering,
University of Arkansas
, Fayetteville, AR 72701
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Calvin M. Stewart
Department of Mechanical, Materials, and Aerospace Engineering,
University of Central Florida
, Orlando, FL 32816-2450e-mail: calvin.stewart@knights.ucf.edu
Ali P. Gordon
Department of Mechanical, Materials, and Aerospace Engineering,
University of Central Florida
, Orlando, FL 32816-2450
Erik A. Hogan
Department of Mechanical Engineering,
University of Colorado at Boulder
, Boulder, CO 80309
Ashok Saxena
College of Engineering,
University of Arkansas
, Fayetteville, AR 72701J. Eng. Mater. Technol. Apr 2011, 133(2): 021013 (11 pages)
Published Online: March 21, 2011
Article history
Received:
June 11, 2010
Revised:
September 1, 2010
Online:
March 21, 2011
Published:
March 21, 2011
Citation
Stewart, C. M., Gordon, A. P., Hogan, E. A., and Saxena, A. (March 21, 2011). "Characterization of the Creep Deformation and Rupture Behavior of DS GTD-111 Using the Kachanov–Rabotnov Constitutive Model." ASME. J. Eng. Mater. Technol. April 2011; 133(2): 021013. https://doi.org/10.1115/1.4003111
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