This paper describes the use of the crack opening displacement (COD) test to predict the fracture initiation transition temperature of high toughness, low-transition temperature in line pipe. A series of COD tests using t × t and t × 2t specimens made from this line pipe material. The COD test was conducted over a range of temperatures and the point where the upper shelf COD values began to decrease with decreasing temperature was defined. To verify the full-scale significance of this temperature, a series of three experiments was conducted on 48-in. (1.22m) dia line pipe to bracket the transition temperature defined in the COD Test. The results suggest that the COD transition temperature can ve used to define the fracture initiation temperature for static loading in pipe. In addition, in the transition temperature region, the full-scale results, while limited in number, suggest that the COD values could possibly be used to predict the critical flaw sizes in the pipe material.
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October 1974
Research Papers
Predicting the Fracture Initiation Transition Temperature in High Toughness, Low Transition Temperature Line Pipe With the COD Test
R. J. Podlasek,
R. J. Podlasek
Battelle’s-Columbus Laboratories, Columbus, Ohio
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R. J. Eiber
R. J. Eiber
Battelle’s-Columbus Laboratories, Columbus, Ohio
Search for other works by this author on:
R. J. Podlasek
Battelle’s-Columbus Laboratories, Columbus, Ohio
R. J. Eiber
Battelle’s-Columbus Laboratories, Columbus, Ohio
J. Eng. Mater. Technol. Oct 1974, 96(4): 330-334 (5 pages)
Published Online: October 1, 1974
Article history
Received:
December 24, 1973
Revised:
March 21, 1974
Online:
August 17, 2010
Citation
Podlasek, R. J., and Eiber, R. J. (October 1, 1974). "Predicting the Fracture Initiation Transition Temperature in High Toughness, Low Transition Temperature Line Pipe With the COD Test." ASME. J. Eng. Mater. Technol. October 1974; 96(4): 330–334. https://doi.org/10.1115/1.3443249
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