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Measurement of ductile crack extension in single edge notch tensile specimens

Matthias Verstraete (UGent) , Stijn Hertelé (UGent) , Wim De Waele (UGent) , Rudi Denys (UGent) and Koen Van Minnebruggen (UGent)
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Abstract
The determination of ductile tearing resistance has since long been focused on high constraint single edge notch bend and compact tension specimens. However, several structures, such as pipelines, have a significantly lower constraint level. To minimize the conservatism involved in the assessment of defects in these structures, nowadays focus is put on the evaluation of tearing resistance using low constraint, single edge notched tension (SENT), specimens. This work compares two measurement techniques for the evaluation of ductile crack extension in such specimens. It is observed that both the unloading compliance and the direct current potential drop technique allow an accurate measurement. However, the calibration of the potential drop technique is more straightforward as it relies on the use of an analytical expression instead of advanced 3D elastic-plastic finite element simulations, as is the case for the unloading compliance technique.
Keywords
SENT, ductile crack extension, Unloading Compliance, Direct Current Potential Drop

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MLA
Verstraete, Matthias, et al. “Measurement of Ductile Crack Extension in Single Edge Notch Tensile Specimens.” 15th International Conference on Experimental Mechanics, Proceedings, edited by JF SilvaGomes and Vaz MAP, Ghent University, Department of Mechanical construction and production, 2012.
APA
Verstraete, M., Hertelé, S., De Waele, W., Denys, R., & Van Minnebruggen, K. (2012). Measurement of ductile crack extension in single edge notch tensile specimens. In J. SilvaGomes & V. MAP (Eds.), 15th International Conference on Experimental Mechanics, Proceedings. Ghent, Belgium: Ghent University, Department of Mechanical construction and production.
Chicago author-date
Verstraete, Matthias, Stijn Hertelé, Wim De Waele, Rudi Denys, and Koen Van Minnebruggen. 2012. “Measurement of Ductile Crack Extension in Single Edge Notch Tensile Specimens.” In 15th International Conference on Experimental Mechanics, Proceedings, edited by JF SilvaGomes and Vaz MAP. Ghent, Belgium: Ghent University, Department of Mechanical construction and production.
Chicago author-date (all authors)
Verstraete, Matthias, Stijn Hertelé, Wim De Waele, Rudi Denys, and Koen Van Minnebruggen. 2012. “Measurement of Ductile Crack Extension in Single Edge Notch Tensile Specimens.” In 15th International Conference on Experimental Mechanics, Proceedings, ed by. JF SilvaGomes and Vaz MAP. Ghent, Belgium: Ghent University, Department of Mechanical construction and production.
Vancouver
1.
Verstraete M, Hertelé S, De Waele W, Denys R, Van Minnebruggen K. Measurement of ductile crack extension in single edge notch tensile specimens. In: SilvaGomes J, MAP V, editors. 15th International Conference on Experimental Mechanics, Proceedings. Ghent, Belgium: Ghent University, Department of Mechanical construction and production; 2012.
IEEE
[1]
M. Verstraete, S. Hertelé, W. De Waele, R. Denys, and K. Van Minnebruggen, “Measurement of ductile crack extension in single edge notch tensile specimens,” in 15th International Conference on Experimental Mechanics, Proceedings, Porto, Portugal, 2012.
@inproceedings{3010073,
  abstract     = {{The determination of ductile tearing resistance has since long been focused on high constraint single edge notch bend and compact tension specimens. However, several structures, such as pipelines, have a significantly lower constraint level. To minimize the conservatism involved in the assessment of defects in these structures, nowadays focus is put on the evaluation of tearing resistance using low constraint, single edge notched tension (SENT), specimens. This work compares two measurement techniques for the evaluation of ductile crack extension in such specimens. It is observed that both the unloading compliance and the direct current potential drop technique allow an accurate measurement. However, the calibration of the potential drop technique is more straightforward as it relies on the use of an analytical expression instead of advanced 3D elastic-plastic finite element simulations, as is the case for the unloading compliance technique.}},
  author       = {{Verstraete, Matthias and Hertelé, Stijn and De Waele, Wim and Denys, Rudi and Van Minnebruggen, Koen}},
  booktitle    = {{15th International Conference on Experimental Mechanics, Proceedings}},
  editor       = {{SilvaGomes, JF and MAP, Vaz}},
  isbn         = {{9789728826260}},
  keywords     = {{SENT,ductile crack extension,Unloading Compliance,Direct Current Potential Drop}},
  language     = {{eng}},
  location     = {{Porto, Portugal}},
  publisher    = {{Ghent University, Department of Mechanical construction and production}},
  title        = {{Measurement of ductile crack extension in single edge notch tensile specimens}},
  year         = {{2012}},
}

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