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Determination of CTOD resistance curves in SENT specimens with a tilted notch

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Abstract
The Single Edge Notched Tension (SENT) specimen is a common tool for the determination of tearing resistance in pipeline steels and welds. However, it assumes pure mode I crack tip loading, which is unrepresentative for the evaluation of spiral seam weld flaws. To this purpose, the authors have performed SENT tests using specimens with a tilted notch. This paper evaluates experimental techniques to obtain the tearing resistance of such specimens. Mixed-mode crack opening displacement and ductile tearing are successfully measured using digital image correlation and direct current potential drop, respectively. The latter technique involves a calibration on the basis of a thermo-electric finite element model. Tearing resistance tends to increase with increasing notch tilt angle. Based on the limited number of tests performed, tilted notch SENT testing appears to be a promising tool for the assessment of spiral seam weld flaws.
Keywords
SENT specimen, pipeline, mixed mode loading, FRACTURE-TOUGHNESS, GROWTH, CRACKS

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Citation

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MLA
Van Minnebruggen, Koen et al. “Determination of CTOD Resistance Curves in SENT Specimens with a Tilted Notch.” PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4. 2014. Print.
APA
Van Minnebruggen, K., Verstraete, M., Hertelé, S., Thibaux, P., & De Waele, W. (2014). Determination of CTOD resistance curves in SENT specimens with a tilted notch. PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4. Presented at the 10th International Pipeline Conference.
Chicago author-date
Van Minnebruggen, Koen, Matthias Verstraete, Stijn Hertelé, Philippe Thibaux, and Wim De Waele. 2014. “Determination of CTOD Resistance Curves in SENT Specimens with a Tilted Notch.” In PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4.
Chicago author-date (all authors)
Van Minnebruggen, Koen, Matthias Verstraete, Stijn Hertelé, Philippe Thibaux, and Wim De Waele. 2014. “Determination of CTOD Resistance Curves in SENT Specimens with a Tilted Notch.” In PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4.
Vancouver
1.
Van Minnebruggen K, Verstraete M, Hertelé S, Thibaux P, De Waele W. Determination of CTOD resistance curves in SENT specimens with a tilted notch. PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4. 2014.
IEEE
[1]
K. Van Minnebruggen, M. Verstraete, S. Hertelé, P. Thibaux, and W. De Waele, “Determination of CTOD resistance curves in SENT specimens with a tilted notch,” in PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4, Calgary, Alberta, Canada, 2014.
@inproceedings{5903067,
  abstract     = {The Single Edge Notched Tension (SENT) specimen is a common tool for the determination of tearing resistance in pipeline steels and welds. However, it assumes pure mode I crack tip loading, which is unrepresentative for the evaluation of spiral seam weld flaws. To this purpose, the authors have performed SENT tests using specimens with a tilted notch. This paper evaluates experimental techniques to obtain the tearing resistance of such specimens. Mixed-mode crack opening displacement and ductile tearing are successfully measured using digital image correlation and direct current potential drop, respectively. The latter technique involves a calibration on the basis of a thermo-electric finite element model. Tearing resistance tends to increase with increasing notch tilt angle. Based on the limited number of tests performed, tilted notch SENT testing appears to be a promising tool for the assessment of spiral seam weld flaws.},
  articleno    = {V004T11A015},
  author       = {Van Minnebruggen, Koen and Verstraete, Matthias and Hertelé, Stijn and Thibaux, Philippe and De Waele, Wim},
  booktitle    = {PROCEEDINGS OF THE 10TH INTERNATIONAL PIPELINE CONFERENCE - 2014, VOL 4},
  isbn         = {978-0-7918-4613-1},
  keywords     = {SENT specimen,pipeline,mixed mode loading,FRACTURE-TOUGHNESS,GROWTH,CRACKS},
  language     = {eng},
  location     = {Calgary, Alberta, Canada},
  pages        = {8},
  title        = {Determination of CTOD resistance curves in SENT specimens with a tilted notch},
  year         = {2014},
}

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