Ductile Fracture Resistance of Pipeline Steels


== Abstract ==

ABSTRACT   The objective of this research is the development of a methodology for the characterization of the ductile tearing resistance of pipeline steels.  Tests carried out under quasistatic loading conditions have shown the effects of in-plane dimensions and the efficiency of different approaches (Sc, R-curves, local criteria). In particular, tests involving large crack propagation range are essential to the understanding of the real behaviour of the cracks in pipelines. For each crack propagation range, the parameters dJ/da, Sc, CTOA give an equivalent classification of the steels with respect to their ductile tearing resistance.  Dynamic tearing tests were conducted under different loading rates. Although these tests did not give the crack speeds representative of pipe burst tests, perceptible changes have been observed in the ductile tearing of the steels.  Mechanical results have been related to fractographic observations at each step of the research.


== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.1016/b978-0-08-034341-9.50035-8 http://dx.doi.org/10.1016/b978-0-08-034341-9.50035-8]

* [https://www.gruppofrattura.it/ocs/index.php/ICF/ICF7/paper/download/3401/7793 https://www.gruppofrattura.it/ocs/index.php/ICF/ICF7/paper/download/3401/7793] under the license cc-by

* [https://www.sciencedirect.com/science/article/pii/B9780080343419500358 https://www.sciencedirect.com/science/article/pii/B9780080343419500358],
: [https://academic.microsoft.com/#/detail/1525076536 https://academic.microsoft.com/#/detail/1525076536]