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Keywords: CTOA
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Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A002, September 28–30, 2020
Paper No: IPC2020-9299
...RECENT PROGRESS IN DEVELOPMENT OF DUCTILE FRACTURE ARREST METHODOLOGY BASED ON CTOA: TEST STANDARD, TRANSFERABILITY AND METHODOLOGY S. Xu1, C. Bassindale2, J. Xue1, B.W. Williams1 and X. Wang2 1CanmetMATERIALS, Natural Resources Canada 183 Longwood Rd S, Hamilton, Ontario, Canada L8P 0A5 2Dept...
Proceedings Papers

Proc. ASME. IPC2010, 2010 8th International Pipeline Conference, Volume 2, 269-278, September 27–October 1, 2010
Paper No: IPC2010-31076
... Proceedings of the 8th International Pipeline Conference IPC2010 September 27-October 1, 2010, Calgary, Alberta, Canada IPC2010-31076 MEASUREMENT OF CTOA OF PIPE STEELS USING MDCB AND DWITT SPECIMENS S. Xu, W.R. Tyson, R. Eagleson CANMET-MTL, Natural Resources Canada, 568 Booth St., Ottawa...
Topics: Pipes, Steel
Proceedings Papers

Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 29-38, September 29–October 3, 2008
Paper No: IPC2008-64060
... 10 07 2009 A major issue of applying the crack-tip opening angle (CTOA) approach to fast ductile fracture control is to characterize material toughness (CTOA c ) using laboratory-scale specimens and to recommend a mill test. In this report, existing direct and indirect CTOA measurement...
Proceedings Papers

Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 273-278, September 29–October 3, 2008
Paper No: IPC2008-64362
... the use of crack arrestors, or the ability of the pipeline material to resist ductile fracture. To evaluate the resistance to crack growth, the crack tip opening angle (CTOA) is used. Recent articles on the CTOA of pipeline steels at quasi-static rates with modified double cantilever beam specimens (MDCB...
Proceedings Papers

Proc. ASME. IPC2004, 2004 International Pipeline Conference, Volumes 1, 2, and 3, 1725-1732, October 4–8, 2004
Paper No: IPC2004-0192
...% of machine capacity (i.e. the validity limit of ASTM E 23). As an alternative to the CVN energy, the crack tip opening angle (CTOA) measured using the drop-weight tear test (DWTT) has been proposed as a material parameter to characterize crack propagation resistance. Preliminary work on evaluating CTOA using...