TY - GEN
T1 - Characterization of the effect of notch bluntness on hydrogen embrittlement and fracture behavior using fe analyses
AU - Jeon, Jun Young
AU - Larrosa, Nicolas O.
AU - Oh, Young Ryun
AU - Kim, Yun Jae
AU - Ainsworth, Robert A.
N1 - Funding Information:
The authors wish to acknowledge part-funding for this research to B.P. through the B.P. International Centre for Advanced Materials and to Engineering Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2007-0056094).
Publisher Copyright:
Copyright © 2015 by ASME.
PY - 2015
Y1 - 2015
N2 - This paper introduces a method to characterize the effect of notch bluntness on hydrogen embrittlement for high strength structural steel, FeE 690T, C(T) specimens. Hydrogen concentration depending on notch radius is assessed via finite element (FE) hydrogen diffusion analysis already developed and validated by the authors. Reduction in fracture toughness, KIC or JIC, due to hydrogen embrittlement is evaluated by means of a coupled hydrogen diffusion-ductile damage analysis. The ductile damage simulation used in this study is based on the model known as 'stress-modified fracture strain model'. Tensile properties and fracture strains are modified according to the level of hydrogen concentration in the simulation and its effect on the fracture behavior of the specimen is simulated for different notch radii.
AB - This paper introduces a method to characterize the effect of notch bluntness on hydrogen embrittlement for high strength structural steel, FeE 690T, C(T) specimens. Hydrogen concentration depending on notch radius is assessed via finite element (FE) hydrogen diffusion analysis already developed and validated by the authors. Reduction in fracture toughness, KIC or JIC, due to hydrogen embrittlement is evaluated by means of a coupled hydrogen diffusion-ductile damage analysis. The ductile damage simulation used in this study is based on the model known as 'stress-modified fracture strain model'. Tensile properties and fracture strains are modified according to the level of hydrogen concentration in the simulation and its effect on the fracture behavior of the specimen is simulated for different notch radii.
UR - http://www.scopus.com/inward/record.url?scp=84973369543&partnerID=8YFLogxK
U2 - 10.1115/PVP201545635
DO - 10.1115/PVP201545635
M3 - Conference contribution
AN - SCOPUS:84973369543
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
BT - Materials and Fabrication
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2015 Pressure Vessels and Piping Conference, PVP 2015
Y2 - 19 July 2015 through 23 July 2015
ER -