Inner and Outer Cracks in Internally Pressurized Cylinders

Kobayashi, A. S.; Polvanich, N.; Emery, A. F.; Love, W. J.

doi:10.1115/1.3454523

Cited by 47 publications

(12 citation statements)

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“…For cylindrical boundaries, the point forces to be continuously distributed on each element of imaginary cylindrical surfaces are approximated by a single point force acting at a point near and outside the center of each ele- From the comparison between the present results and those of Raju and Newman (1982), it is found that their results agree well with our results. Figure 16 gives the comparison between the present results and those of Kobayashi et al (1977). Their results are in good agreement with the present results for the case when baa b 0X6X Figure 17 also gives the comparison among the present results and those of Heliot et al (1979), andMcGown andRaymund (1979).…”

Section: Stress Intensity Factorssupporting

confidence: 94%

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Body force method and its applications to numerical and theoretical problems in fracture and damage

Nisitani

Chen

1997

Computational Mechanics

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Body force method is a method based on the principle of superposition. The solution in BFM is obtained by the superposition of fundamental solutions so as to satisfy a given boundary condition. By means of these fundamental solutions all problems can be solved in principle. In this paper, ®rst the short history and fundamental principle of BFM are stated and then some numerical and theoretical problems treated by BFM are shown.

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Section: Stress Intensity Factorssupporting

confidence: 94%

“…The values for the case when bat 0 were taken from the results of a semi-elliptical surface crack in semi-in®nite body. Kobayashi et al (1977) …”

Section: Stress Intensity Factorsmentioning

confidence: 97%

Body force method and its applications to numerical and theoretical problems in fracture and damage

Nisitani

Chen

1997

Computational Mechanics

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“…Kobayashi et al [14] obtained a theoretical K I formula for a thinwalled tube, and Anderson [15] improved the theoretical K I formula by correcting the geometrical factor…”

Section: Pre-crack Testmentioning

confidence: 99%

Stress-corrosion crack initiation and propagation behavior of Zircaloy-4 cladding under an iodine environment

Park¹,

Kim²,

Lee³

et al. 2008

Journal of Nuclear Materials

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“…These approximations were based mostly on flat plate solutions that neglect curvature effects. These have been shown by Kobayashi et al (1977) to give relatively good results for shallow surface flaws for a/t < 50%.…”

Section: Stress Intensity Factor Solutionsmentioning

confidence: 96%

Acceptance criteria for ultrasonic flaw indications in the inner liner of double-shell waste storage tanks

Simonen¹,

Graves²,

Johnson³

1995

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Radioactive defense waste, resulting from the chemical processing of spent nuclear fuel, has been stored in double-shell tanks (DSTs) at the Hanford Site since 1970. As part of the program to assure that the DSTs maintain their structural integrity, an inspection plan is being developed and implemented.This report provides recommendations and technical bases for acceptance criteria for flaw indications detected during ultrasonic inspection of inner liners of the DSTs. The types of indications addressed are crack-like flaws, wall thinning, and pitting. In establishing acceptable flaw sizes, the evaluations have taken into consideration the potential for crack growth by the mechanism of stress corrosion cracking. Consideration was given to technical approaches used in ASME Codes, for reactor tanks at the Department of Energy Savannah River facilities, and in recommendations by the Tank Structural Integrity Panel. The goal was to ensure that indications discovered during inspections are not large enough to ever cause a leak or rupture of the tank inner liner. The acceptance criteria are intended to be simple to apply using a set of tables giving acceptable flaw sizes. These tables are sufficiently conservative to be applicable to all double-shell tanks. In those cases that a flaw exceeds the size permitted by the tables, it is proposed that additional criteria permit more detailed and less conservative evaluations to address specific conditions of stress levels, operating temperature, flaw location, and material properties. DISCLAIMERThis report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Executive SummaryRadioactive defense waste, resulting from the chemical processing of spent nuclear fuel, has been stored in double-shell tanks @STs) at the Hanford Site since 1970. As part of the program to assure that the DSTs maintain their structural integrity, an inspection plan is being developed and implemented. This report provides recommendations and technical bases for acceptance criteria for flaw indications detected during ultrasonic inspection of inner liners of the DSTs.This report describes prior evaluations of tank stresses and reviews the materials and welding procedures used in the construction of the ...

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Inner and Outer Cracks in Internally Pressurized Cylinders

Cited by 47 publications

References 0 publications

Body force method and its applications to numerical and theoretical problems in fracture and damage

Body force method and its applications to numerical and theoretical problems in fracture and damage

Stress-corrosion crack initiation and propagation behavior of Zircaloy-4 cladding under an iodine environment

Acceptance criteria for ultrasonic flaw indications in the inner liner of double-shell waste storage tanks

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