TY - GEN
T1 - Flaw evaluations using master curve methodology
AU - Sham, T. L.
AU - Mahmoud, Samer H.
AU - Gunawardane, Heshan P.
AU - Hawileh, Rami A.
PY - 2008
Y1 - 2008
N2 - The Master Curve (MC) reference temperature, T0, characterizes the fracture performance of pressure vessel steels in the ductile-brittle transition region. An MC-based flaw-evaluation analysis procedure that accounts for the variations of stress intensity factor, temperature, constraint, and material conditions is presented. The analysis procedure is applied to an example problem of pressure-temperature curve construction for a Section XI, Appendix G, internal, axial, semi-elliptical surface flaw subjected to a simple cool-down transient. The results show that the enhancement in the fracture toughness due to constraint loss in the ductile-brittle transition region as seen in data from test specimen geometries does not always translate to similar benefits in structural applications. Analyses such as those carried out in this work are necessary to quantify the potential benefit for each application.
AB - The Master Curve (MC) reference temperature, T0, characterizes the fracture performance of pressure vessel steels in the ductile-brittle transition region. An MC-based flaw-evaluation analysis procedure that accounts for the variations of stress intensity factor, temperature, constraint, and material conditions is presented. The analysis procedure is applied to an example problem of pressure-temperature curve construction for a Section XI, Appendix G, internal, axial, semi-elliptical surface flaw subjected to a simple cool-down transient. The results show that the enhancement in the fracture toughness due to constraint loss in the ductile-brittle transition region as seen in data from test specimen geometries does not always translate to similar benefits in structural applications. Analyses such as those carried out in this work are necessary to quantify the potential benefit for each application.
UR - https://www.scopus.com/pages/publications/43449104737
U2 - 10.1115/PVP2007-26648
DO - 10.1115/PVP2007-26648
M3 - Conference contribution
AN - SCOPUS:43449104737
SN - 0791842843
SN - 9780791842843
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
SP - 135
EP - 144
BT - 2007 Proceedings of the ASME Pressure Vessels and Piping Conference - Materials and Fabrication
T2 - 2007 ASME Pressure Vessels and Piping Conference, PVP 2007
Y2 - 22 July 2007 through 26 July 2007
ER -