J-Integral modeling and validation for GTS reservoirs.

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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 ... continued below

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130 p.

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Martinez-Canales, Monica L.; Nibur, Kevin A.; Lindblad, Alex J.; Brown, Arthur A.; Ohashi, Yuki; Zimmerman, Jonathan A. et al. January 1, 2009.

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Description

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.

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130 p.

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  • Report No.: SAND2009-0625
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/978911 | External Link
  • Office of Scientific & Technical Information Report Number: 978911
  • Archival Resource Key: ark:/67531/metadc925759

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Nov. 29, 2016, 4:34 p.m.

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Martinez-Canales, Monica L.; Nibur, Kevin A.; Lindblad, Alex J.; Brown, Arthur A.; Ohashi, Yuki; Zimmerman, Jonathan A. et al. J-Integral modeling and validation for GTS reservoirs., report, January 1, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc925759/: accessed August 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.