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TECHNICAL PAPERS

C-Specimen Fracture Toughness Testing: Effect of Side Grooves and η Factor

[+] Author and Article Information
Y. Kim, Y. J. Chao

Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208

M. J. Pechersky, M. J. Morgan

Savannah River Technology Center, Savannah River Company, Aiken, SC 29808

J. Pressure Vessel Technol 126(3), 293-299 (Aug 18, 2004) (7 pages) doi:10.1115/1.1762425 History: Received May 15, 2003; Revised June 17, 2003; Online August 18, 2004
Copyright © 2004 by ASME
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References

ASTM E 399-97, “Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials,” ASTM.
Brosa,  V. G., Bernal,  C., and Frontini,  P., 1999, “Calibration of Fracture Mechanics Parameters and J-R Curve Determination in Polyethylene Side-Grooved Arc-Shaped Specimens,” Eng. Fract. Mech., 62, pp. 231–248.
Goan,  J. M., Sutton,  M. A., and Chao,  Y. J., 1990, “Assessment of the Engineering Approach for the Evaluation of C-Shaped Specimens,” ASME J. Pressure Vessel Technol., 112, pp. 353–365.
Paris, P. C., 1977, “Fracture Mechanic in the Elastic-Plastic Regime,” Flaw Growth and Fracture, ASTM STP 631, American Society for Testing and Materials, pp. 3–27.
Paris, P. C., Tada, H., Zahoor, A., and Ernst, H., 1979, “The Theory of Instability of the Tearing Mode of Elastic-Plastic Crack Growth,” Elastic-Plastic Fracture, ASTM STP 668, American Society for Testing and Materials, pp. 5–36.
Landes, J. D., and Begley, J. A., 1972, “The Effect of Specimen Geometry on JIC,” Fracture Toughness, ASTM STP 514, American Society for Testing and Materials, pp. 24–39.
Landes, J. D., and Begley, J. A., 1974, “Test Results From J-Integral Studies: An Attempt to Establish a JIC Testing Procedure,” Fracture Analysis, ASTM STP 560, American Society for Testing and Materials, pp. 170–186.
deLorenzi,  H. G., and Shih,  C. F., 1977, “Elastic Compliances and Stress-Intensity Factors for Side-Grooved Compact Specimens,” Int. J. Fract., 13, pp. 544–548.
deLorenzi,  H. G., and Shih,  C. F., 1983, “Three-Dimensional Elastic-Plastic Investigation of Fracture Toughness Parameters in Side-Grooved Compact Specimen,” Int. J. Fract., 21, pp. 195–220.
Poulose,  P. K., 1987, “Determination of Fracture Toughness From Thin Side-Grooved Specimens,” Eng. Fract. Mech., 26(2), pp. 203–211.
Zhang,  X. P., and Shi,  Y. W., 1992, “Constraint of Side-Groove and Its Influence on Fracture Toughness Parameter in Charpy-Size Specimens,” Eng. Fract. Mech., 43(5), pp. 863–867.
Rice,  J. R., 1968, “A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks,” ASME J. Appl. Mech., 35, pp. 379–386.
ABAQUS, 2001, Version 6.2-1, Hibbitt, Karlsson and Sorensen, Inc., Pawtucket, RI.
Han,  L., Deng,  Y., and Liu,  C., 1999, “The Determination of JIC for Polyethylene Pipe Using Non-Standard Arc-Shaped Specimen,” Int. J. Pressure Vessels Piping, 76, pp. 647–651.
Elfer,  N., and Bachmann,  V., 1984, “Errors in the Determination of JIC Using Arc-Shaped Specimens,” Int. J. Fract., 24, pp. 73–80.
Imai,  Y., and Matake,  T., 1982, “Effects of Side Grooves on the Elastic-Plastic Stress State of Fracture Toughness Specimens—Three Dimensional Finite Element Analysis,” Eng. Fract. Mech., 16(5), pp. 659–668.
ASTM E 1820-99a, “Standard Test Method for Measurement of Fracture Toughness,” ASTM.

Figures

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Effect of side grooves on the distribution of J through the thickness
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Comparison of the distributions of elastic-plastic plane-strain constraint parameter between two-dimensional C-specimen and three-dimensional side-grooved C-specimen under the max load
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Development of the plastic zone for two-dimensional C-specimen under the plane-strain condition
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Plastic zones under the max load: (a) two-dimensional plane strain, (b) side grooved three-dimensional (at the center plane)
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Extent of plastic zone for side grooved three-dimensional under the max load
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Comparison of J versus load between two-dimensional plane-strain and side-grooved three-dimensional analyses (21-6-9 stainless steel)
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Comparison of η between two-dimensional plane-strain and side-grooved three-dimensional
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J versus load for side-grooved C-specimen and ASTM CT-specimen
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Comparison of η between 21-6-9 and 304 L side-grooved C-specimens
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J versus load for side-grooved C-specimen and ASTM CT-specimen (304 L stainless steel)
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Finite element meshes for the side-grooved C-specimen
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Stress-strain curves for 21-6-9 and 304 L stainless steels
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Comparison of load versus load-line displacement between two-dimensional plane-strain and side-grooved three-dimensional analyses
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Distribution of J through the thickness for the plane-sided C-specimen
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Distribution of J along the thickness for the side-grooved C-specimen
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Typical broken surface of the side-grooved C-specimen
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Arc-shaped tension specimen (C-specimen)

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