Actions for J-Integral modeling and validation for GTS reservoirs [electronic resource].

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J-Integral modeling and validation for GTS reservoirs [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2009.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
130 pages : digital, PDF file
Additional Creators
Sandia National Laboratories, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Non-destructive detection methods can reliably certify that gas transfer system (GTS) reservoirs do not have cracks larger than 5%-10% of the wall thickness. To determine the acceptability of a reservoir design, analysis must show that short cracks will not adversely affect the reservoir behavior. This is commonly done via calculation of the J-Integral, which represents the energetic driving force acting to propagate an existing crack in a continuous medium. J is then compared against a material's fracture toughness (J{sub c}) to determine whether crack propagation will occur. While the quantification of the J-Integral is well established for long cracks, its validity for short cracks is uncertain. This report presents the results from a Sandia National Laboratories project to evaluate a methodology for performing J-Integral evaluations in conjunction with its finite element analysis capabilities. Simulations were performed to verify the operation of a post-processing code (J3D) and to assess the accuracy of this code and our analysis tools against companion fracture experiments for 2- and 3-dimensional geometry specimens. Evaluation is done for specimens composed of 21-6-9 stainless steel, some of which were exposed to a hydrogen environment, for both long and short cracks.
Report Numbers
E 1.99:sand2009-0625
sand2009-0625
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Note
Published through SciTech Connect.
01/01/2009.
"sand2009-0625"
Margolis, Stephen B.; Somerday, Brian P.; Zimmerman, Jonathan A.; Ohashi, Yuki; Brown, Arthur A.; Antoun, Bonnie R.; Martinez-Canales, Monica L.; Hong, Soonsung; Connelly, Kevin; Nibur, Kevin A.; Lindblad, Alex J.; Huestis, Edwin.
Funding Information
AC04-94AL85000
View MARC record | catkey: 14390587