Browsing NTNU Open by Author "Olden, Vigdis"
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A coupled diffusion and cohesive zone modelling approach for numerically assessing hydrogen embrittlement of steel structures
Jemblie, Lise; Olden, Vigdis; Akselsen, Odd Magne (Journal article; Peer reviewed, 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 ... -
A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures.
Jemblie, Lise; Olden, Vigdis; Akselsen, Odd Magne (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 ... -
A uniform hydrogen degradation law for high strength steels
Yu, Haiyang; Olsen, Jim Stian; Alvaro, Antonio; Olden, Vigdis; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2016)The degrading effect of hydrogen on high strength steels is well recognized. The hydrogen degradation is dependent not only on hydrogen content, but also on geometric constraints or equivalently, level of stress triaxiality, ... -
Cohesive zone modelling of hydrogen induced cracking on the interface of clad steel pipes
Jemblie, Lise; Olden, Vigdis; Maincon, Philippe Emmanuel; Akselsen, Odd Magne (Journal article; Peer reviewed, 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 ... -
Cohesive zone simulation of grain size and misorientation effects on hydrogen embrittlement in nickel
Yu, Haiyang; Olsen, Jim Stian; Olden, Vigdis; Alvaro, Antonio; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2017)The size and misorientation effects on hydrogen embrittlement of a four grain nickel aggregate are studied with the help of hydrogen informed cohesive zone model. The grain misorientation angle is parameterized by fixing ... -
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. ... -
Effect of Microstructure and Temperature on HydrogenDiffusion and Trapping in X70 grade Pipeline Steel and itsWeldments
Skjellerudsveen, Magnus; Akselsen, Odd Magne; Olden, Vigdis; Johnsen, Roy; Smirnova, Anna (Chapter, 2010) -
Effect of Plastic Deformation and Microstructure on Hydrogen Diffusion in Steel
Hope, Malin Sofie Berglund (Master thesis, 2015)This work has been part of the ROP (Repair Contingency of Pipelines) project executed by SINTEF, where Vigdis Olden is project lead. The main content of this report is the execution of hydrogen permeation tests on Fe3wt.%Si ... -
Evaluation of Welded Clad Pipe - Microstructures and Properties
Bjaaland, Helena (Master thesis, 2015)Clad pipes are used in the oil and gas industry for transportation of corrosive substances. Maintenance, repairs and tie-in connections to existing subsea structures is done by hyperbaric welding. There is per today no ... -
Experimental and numerical study on hydrogen-induced failure of X65 pipeline steel
Lin, Meichao; Yu, Haiyang; Wang, Dong; Díaz, Andrés; Alvaro, Antonio; Olden, Vigdis; Koren, Erik Aas; Ding, Yu; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2024)Hydrogen-induced fracture of X65 pipeline steel under in-situ electrochemical charging is investigated by using in situ slow strain-rate tensile (SSRT) test, hydrogen diffusion test, fractography analysis, and finite element ... -
FE modelling of hydrogeninduced stress crackingin 25% Cr duplex stainless steel
Olden, Vigdis (Doktoravhandlinger ved NTNU, 1503-8181; 2008:129, Doctoral thesis, 2008) -
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 (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 Embrittlement in Fe3%Si, Visited by Nanomechanical Testing and Cohesive Zone Simulation
Olden, Vigdis; Hajilou, Tarlan; Kheradmand, Nousha; Barnoush, Afrooz; Alvaro, Antonio; Osen, Vidar (Chapter, 2016)This work is part of a multi scale computational and experimental approach in which first principle modelling, nanoscale experiments and continuum simulations are combined in order to represent hydrogen induced degradation ... -
Hydrogen embrittlement of clad steel pipes: Experiments and FE modelling
Jemblie, Lise (Doctoral theses at NTNU;2018:200, Doctoral thesis, 2018)Pipes with an inner layer of corrosion resistant alloy, so called clad pipes, are increasingly used in the oil and gas industry as en economical viable option for corrosion management, combining the mechanical properties ... -
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-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 (Journal article; Peer reviewed, 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 ... -
Influence of Dissipative Cohesive Zone Law on Hydrogen Embrittlement
Islam, Sunny (Master thesis, 2016)The dissipative cohesive zone model of Gao was applied with the hydrogen transport model established by Sofronis to approximate a cracked geometry subject to constant load and hydrogen embrittlement. The model assumed small ... -
Materials testing and characterization of four X60-X65 pipeline steels
Alvaro, Antonio; Hagen, Anette Brocks; Lervåg, Malin; Nyhus, Bård; Olden, Vigdis (SINTEF Rapport;, Research report, 2020)The report summarizes the main results from the slow strain rate tensile testing campaign performed within the framework of the HyLINE project. The metallurgical characterization of the pipe, in terms of base metals (BM), ...