TY - JOUR
T1 - Effects of depth in external and internal corrosion defects on failure pressure predictions of oil and gas pipelines using finite element models
AU - Capula Colindres, Selene
AU - Méndez, Gerardo Terán
AU - Velázquez, Julio Cesar
AU - Cabrera-Sierra, Roman
AU - Angeles-Herrera, Daniel
N1 - Publisher Copyright:
© The Author(s) 2020.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - This study presents, for the first time, the mechanical behavior of API 5L pipeline steels X42, X52, X60, X70, X80, and X100 with external and internal corrosion defects as well as a combination of both defects that has been named external–internal corrosion defects. The conventional methods to predict failure pressure in corroded pipes, such as B31G, RSTRENG-1, SHELL, DNV-99, PCORRC, and FITNET FFS, have also been discussed in this article. In addition, pipeline failure pressure has been estimated using the finite element method, considering that it is the best approach to calculate actual failure pressure. The external and internal corrosion defect investigated in this research manifests as a rectangular shape with spherical ends at the edges. When the external–internal corrosion defect appears, failure pressure data decrease dramatically because of severe damage. This is due to the decrease in the ligament (effective area) caused by the corrosion defect. To have a good estimation of the pipeline failure pressure with an external–internal corrosion defect, DNV-99 method can be used with acceptable certainty.
AB - This study presents, for the first time, the mechanical behavior of API 5L pipeline steels X42, X52, X60, X70, X80, and X100 with external and internal corrosion defects as well as a combination of both defects that has been named external–internal corrosion defects. The conventional methods to predict failure pressure in corroded pipes, such as B31G, RSTRENG-1, SHELL, DNV-99, PCORRC, and FITNET FFS, have also been discussed in this article. In addition, pipeline failure pressure has been estimated using the finite element method, considering that it is the best approach to calculate actual failure pressure. The external and internal corrosion defect investigated in this research manifests as a rectangular shape with spherical ends at the edges. When the external–internal corrosion defect appears, failure pressure data decrease dramatically because of severe damage. This is due to the decrease in the ligament (effective area) caused by the corrosion defect. To have a good estimation of the pipeline failure pressure with an external–internal corrosion defect, DNV-99 method can be used with acceptable certainty.
KW - corrosion defect
KW - failure pressure
KW - finite element method
KW - pipeline steel
UR - http://www.scopus.com/inward/record.url?scp=85086574153&partnerID=8YFLogxK
U2 - 10.1177/1369433220924790
DO - 10.1177/1369433220924790
M3 - Artículo
SN - 1369-4332
VL - 23
SP - 3128
EP - 3139
JO - Advances in Structural Engineering
JF - Advances in Structural Engineering
IS - 14
ER -