Blar i SINTEF Open på forfatter "Olden, Vigdis"
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Assessing fracture toughness of vintage and modern X65 pipeline steels under in situ electrochemical hydrogen charging using advanced testing methodology
Myhre, Aleksander Omholt; Wan, Di; Sendrowicz, Aleksander; Nyhus, Bård; Matsunaga, H.; Olden, Vigdis; Alvaro, Antonio; Vinogradov, Alexei (Peer reviewed; Journal article, 2024)The susceptibility of pipeline steels to hydrogen embrittlement, which can significantly impair mechanical performance, especially fracture toughness, is a critical issue in infrastructure integrity. This study evaluates ... -
Cohesive zone modelling of hydrogen induced cracking on the interface of clad steel pipes
Jemblie, Lise; Olden, Vigdis; Maincon, Philippe Emmanuel; Akselsen, Odd Magne (Peer reviewed; Journal article, 2017)A coupled finite element hydrogen diffusion and cohesive zone modelling approach has been applied to simulate hydrogen induced fracture initiation in a hot rolled bonded clad steel pipe. The results are compared to ... -
A comparative study of laser-arc hybrid welding with arc welding for fabrication of offshore substructures
Bunaziv, Ivan; Ren, Xiaobo; Olden, Vigdis (Peer reviewed; Journal article, 2023)Laser-arc hybrid welding (LAHW) is an efficient and promising joining method for offshore structures made from metallic alloys. Under a high-power laser output, a keyhole is formed that efficiently melts a metal and provides ... -
A coupled diffusion and cohesive zone modelling approach for numerically assessing hydrogen embrittlement of steel structures
Jemblie, Lise; Olden, Vigdis; Akselsen, Odd Magne (Peer reviewed; Journal article, 2017)Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the ... -
Dry hyperbaric welding of HSLA steel up to 35 bar ambient pressure with CMT arc mode
Bunaziv, Ivan; Aune, Ragnhild; Olden, Vigdis; Akselsen, Odd Magne (Peer reviewed; Journal article, 2019)Hyperbaric welding plays a significant role in subsea pipeline installations and repairs for transport of oil and gas from the offshore field to the market. The effect of ambient pressure, from 1 to 35 bar, on penetration ... -
Dual roles of pearlite microstructure to interfere/facilitate gaseous hydrogen-assisted fatigue crack growth in plain carbon steels
Ogawa, Yuhei; Nishida, Haruki; Nakamura, Masami; Olden, Vigdis; Vinogradov, Alexey; Matsunaga, Hisao (Peer reviewed; Journal article, 2021)Fatigue crack growth of two carbon steels with different pearlite volume fractions were studied in pressurized gaseous hydrogen environment. Notably, pearlite was found to mitigate hydrogen-assisted fatigue crack acceleration. ... -
Fracture toughness and hydrogen embrittlement susceptibility on the interface of clad steel pipes with and without a Ni-interlayer.
Jemblie, Lise; Bjaaland, Helena; Nyhus, Bård; Olden, Vigdis; Akselsen, Odd Magne (Peer reviewed; Journal article, 2017)The objective of the present work has been to study the fracture properties of the interface between clad and base material of two 316 L austenitic stainless steel - X60/X65 carbon steel hot roll bonded clad pipes; with ... -
Hydrogen Enhanced Fatigue Crack Growth Rates in a Ferritic Fe-3wt%Si Alloy
Alvaro, Antonio; Wan, Di; Olden, Vigdis; Barnoush, Afrooz (Journal article; Peer reviewed, 2018)It is well known that the presence of hydrogen in ferrous materials promotes both static fracture and affect the material fatigue crack growth rates. The latter is often referred to as Hydrogen Enhanced Fatigue Crack Growth ... -
Hydrogen enhanced fatigue crack growth rates in a ferritic Fe-3 wt%Si alloy and a X70 pipeline steel
Alvaro, Antonio; Wan, Di; Olden, Vigdis; Barnoush, Afrooz (Journal article; Peer reviewed, 2019)It is well known that ferrous materials can be damaged by absorption of hydrogen. If a sufficient quantity of hydrogen penetrates into the material, static fracture and the material's fatigue performances can be affected ... -
Hydrogen trapping in X70 structural pipeline steel and weldments
Sezgin, Jean-Gabriel; Fjær, Hallvard Gustav; Matsunaga, Hisao; Yamabe, Junichiro; Olden, Vigdis (Chapter; Peer reviewed, 2018)Diffusion measurements and thermal desorption measurements have been performed on a X70 pipeline steel, in as received and normalized and quenched condition, after being hydrogen charged for 200 h at 100 MPa hydrogen gas ... -
Hydrogen-assisted fatigue crack growth in ferritic steels – a fractographic study
Wan, Di; Alvaro, Antonio; Olden, Vigdis; Barnoush, Afrooz (Journal article; Peer reviewed, 2018)Fatigue crack growth (FCG) behavior of a Fe-3wt.%Si ferritic alloy under different environmental conditions using in-situ electrochemical (cathodic) hydrogen (H) charging has been investigated. Three frequencies have been ... -
Hydrogen-enhanced fatigue crack growth behaviors in a ferritic Fe-3wt%Si steel studied by fractography and dislocation structure analysis
Wan, Di; Alvaro, Antonio; Olden, Vigdis; Barnoush, Afrooz (Peer reviewed; Journal article, 2019)The effect of hydrogen (H) on the fatigue behavior is of significant importance for metallic structures. In this study, the hydrogen-enhanced fatigue crack growth rate (FCGR) tests on in-situ electrochemically H-charged ... -
Knowledge basis for repair contingency of pipelines - Final report
Olden, Vigdis; Lindholm, Dag; Fjær, Hallvard Gustav; Rudshaug, Magne; Aune, Ragnhild; Ren, Xiaobo (SINTEF rapporter;2019:00027, Research report, 2019)The RCN competence project ROP was initiated in January 2014, with the main objective to establish basic knowledge on subsea hyperbaric repair welding and degradation of clad and lined pipes, as well as C-Mn steel. The ... -
Materials testing and characterization of four X60-X65 pipeline steels
Alvaro, Antonio; Hagen, Anette Brocks; Lervåg, Malin; Nyhus, Bård; Olden, Vigdis (Research report, 2021)This report summarizes the main results from the slow strain rate tensile testing campaign performed within the framework of the HyLINE project. The base metals and weld simulated heat affected zones of four pipeline steels, ... -
Metallurgical Aspects in the Welding of Clad Pipelines—A Global Outlook
Bunaziv, Ivan; Olden, Vigdis; Akselsen, Odd Magne (Journal article; Peer reviewed, 2019)In the present work, the metallurgical changes in the welding of clad pipelines are studied. Clad pipes consist of a complex multi-material system, with (i) the clad being stainless steel or a nickel-based superalloy, (ii) ... -
A microstructure informed and mixed-mode cohesive zone approach to simulating hydrogen embrittlement
Lin, Meichao; Yu, Haiyang; Wang, Xu; wang, ruijun; Ding, Yu; Alvaro, Antonio; Olden, Vigdis; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2022)Hydrogen induced failure under uniaxial tension is simulated in a duplex stainless steel considering microstructural feature of the material. There are three key ingredients in the modelling approach: image processing and ... -
A predictive model unifying hydrogen enhanced plasticity and decohesion
Lin, Meichao; Yu, Haiyang; Ding, Yu; Wang, Gang; Olden, Vigdis; Alvaro, Antonio; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2022)The detrimental effect of hydrogen on metals which manifests itself as a transition from a ductile to a brittle failure mode is, for the first time, incorporated into a unified continuum-scale predictive framework. The ... -
A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures.
Jemblie, Lise; Olden, Vigdis; Akselsen, Odd Magne (Peer reviewed; Journal article, 2017)Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the ... -
Simulation of ductile-to-brittle transition combining complete Gurson model and CZM with application to hydrogen embrittlement
Lin, Meichao; Yu, Haiyang; Ding, Yu; Olden, Vigdis; Alvaro, Antonio; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2022)A general simulation framework for modelling ductile-to-brittle transition in metals is proposed. The method combines the complete Gurson model and cohesive zone model, which brings ductile and brittle fracture mechanisms ...