TY - GEN
T1 - The effect of pre-strain on ductile fracture toughness of reeled pipeline steels
AU - Tkaczyk, Tomasz
AU - O'Dowd, Noel P.
AU - Nikbin, Kamran
AU - Howard, Brett P.
PY - 2010
Y1 - 2010
N2 - The reel-lay method is a cost efficient alternative to the S-lay and J-lay methods for small to medium size steel offshore pipelines. The quality of the pipeline construction is enhanced by on-shore welding and inspection under controlled conditions. However, reeled pipelines are subject to at least two symmetrical plastic strain cycles during installation. The plastic straining associated with reeled installation modifies the axial tensile response of the pipe material. Also, it has been suggested that plastic straining may reduce the fracture toughness. In this work small scale tests, representative of conditions experienced under reeling of steel pipelines, have been carried out. The fracture resistance curves obtained for the material in the as-received and strained conditions have been compared. No significant effect of the reeling strain cycle on the fracture toughness during subsequent straining was observed.
AB - The reel-lay method is a cost efficient alternative to the S-lay and J-lay methods for small to medium size steel offshore pipelines. The quality of the pipeline construction is enhanced by on-shore welding and inspection under controlled conditions. However, reeled pipelines are subject to at least two symmetrical plastic strain cycles during installation. The plastic straining associated with reeled installation modifies the axial tensile response of the pipe material. Also, it has been suggested that plastic straining may reduce the fracture toughness. In this work small scale tests, representative of conditions experienced under reeling of steel pipelines, have been carried out. The fracture resistance curves obtained for the material in the as-received and strained conditions have been compared. No significant effect of the reeling strain cycle on the fracture toughness during subsequent straining was observed.
UR - http://www.scopus.com/inward/record.url?scp=77953018523&partnerID=8YFLogxK
U2 - 10.1115/PVP2009-77684
DO - 10.1115/PVP2009-77684
M3 - Conference contribution
AN - SCOPUS:77953018523
SN - 9780791843697
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
SP - 1203
EP - 1212
BT - Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
T2 - 2009 ASME Pressure Vessels and Piping Conference
Y2 - 26 July 2009 through 30 July 2009
ER -