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Proceedings Papers

Results From Fatigue Testing of Subsea Wellhead Connector Segments

Agnes Marie Horn, Pedro Barros, Anders Wormsen, Per Osen, Kenneth A. Macdonald
Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A048, June 21–30, 2021
Paper No: OMAE2021-62360
DOI: https://doi.org/10.1115/OMAE2021-62360
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Topics: Fatigue testing, Ocean engineering, Stress, Finite element analysis, Testing, Fatigue, Drilling, Drilling rigs, Failure mechanisms, Fatigue analysis
Proceedings Papers

Hydrogen’s Peculiar Effect on Material Properties: Do We Need to Be Concerned About Hydrogen Transport in Pipelines?

Erling Østby, Bjørn-Andreas Hugaas, Agnes Marie Horn
Proc. ASME. OMAE2021, Volume 3: Materials Technology, V003T03A004, June 21–30, 2021
Paper No: OMAE2021-63753
DOI: https://doi.org/10.1115/OMAE2021-63753
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Topics: Hydrogen, Hydrogen embrittlement, Materials properties, Pipelines, Atoms, Mechanical properties, Steel, Underwater pipelines
Proceedings Papers

Method for Fatigue Testing of Subsea Wellhead Connector Segments

Pedro Barros, Agnes Marie Horn, Anders Wormsen, Per Osen, Kenneth A. Macdonald
Proc. ASME. OMAE2020, Volume 2A: Structures, Safety, and Reliability, V02AT02A054, August 3–7, 2020
Paper No: OMAE2020-18652
DOI: https://doi.org/10.1115/OMAE2020-18652
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Topics: Fatigue testing, Ocean engineering, Stress, Fatigue, Testing, Finite element analysis, Drilling, Drilling rigs, Boundary-value problems, Friction
Proceedings Papers

Environmental Assisted Cracking of High Strength Subsea Material due to CP

Agnes Marie Horn, Erling Østby, Viggo Røneid, Finn Kirkemo
Proc. ASME. OMAE2019, Volume 4: Materials Technology, V004T03A048, June 9–14, 2019
Paper No: OMAE2019-96685
DOI: https://doi.org/10.1115/OMAE2019-96685
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Topics: Cracking (Materials), Fracture (Process), Ocean engineering, Design, Testing, Fracture toughness, Life extension, Seawater, Ductility, Fatigue
Proceedings Papers

The Rationale for Update of S-N Curves for Single Sided Girth Welds for Risers and Pipelines in DNV GL RP C-203 Based on Fatigue Performance of More Than 1700 Full Scale Fatigue Test Results

Agnes Marie Horn, Inge Lotsberg, Oddvin Orjaseater
Proc. ASME. OMAE2018, Volume 4: Materials Technology, V004T03A024, June 17–22, 2018
Paper No: OMAE2018-78408
DOI: https://doi.org/10.1115/OMAE2018-78408
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Topics: Fatigue, Fatigue testing, Pipeline risers, Pipelines, Risers (Casting), Welded joints, Pipes, Currents, Failure, Stress
Proceedings Papers

Design Under Arctic Conditions: A Summary of the Arctic Materials Project Guideline

Agnes Marie Horn, Erling Østby, Odd Akselsen, Mons Hauge
Proc. ASME. OMAE2018, Volume 4: Materials Technology, V004T03A033, June 17–22, 2018
Paper No: OMAE2018-78426
DOI: https://doi.org/10.1115/OMAE2018-78426
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Topics: Arctic region, Design, Fracture toughness, Ocean engineering, Temperature, Low temperature, Structural elements (Construction), Acceptance criteria, Brittle fracture, Brittleness
Proceedings Papers

The Fracture Resistance Approach to Rationalize Overall Temperature and Wall Thickness Effects on Fracture Toughness for Design of Offshore Structures Under Arctic Conditions

Agnes Marie Horn, Erling Østby, Odd Akselsen, Mons Hauge
Proc. ASME. OMAE2017, Volume 4: Materials Technology, V004T03A031, June 25–30, 2017
Paper No: OMAE2017-62188
DOI: https://doi.org/10.1115/OMAE2017-62188
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Topics: Arctic region, Fracture (Materials), Fracture (Process), Fracture toughness, Offshore structural design, Temperature, Wall thickness, Design, Low temperature, Brittle fracture
Proceedings Papers

A Tribute to the Extraordinary Research Work Within the Domain of Fatigue and Fracture of Offshore and Ship Structures Carried Out by Prof. Stig Berge and Per Jahn Haagensen at the Norwegian University of Science and Technology

Agnes Marie Horn, Kenneth A. Macdonald
Proc. ASME. OMAE2017, Volume 4: Materials Technology, V004T03A039, June 25–30, 2017
Paper No: OMAE2017-62189
DOI: https://doi.org/10.1115/OMAE2017-62189
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Topics: Fatigue, Fracture (Materials), Fracture (Process), Ocean engineering, Ships, Engineering teachers, Engineers, Marine engineering, Mechanical engineering, Welding
Proceedings Papers

The Fracture Resistance Approach in Order to Prevent Brittle Failure of Offshore Structures Under Arctic Environments

Agnes Marie Horn, Erling Østby, Per Olav Moslet, Mons Hauge
Proc. ASME. OMAE2016, Volume 4: Materials Technology, V004T03A021, June 19–24, 2016
Paper No: OMAE2016-54341
DOI: https://doi.org/10.1115/OMAE2016-54341
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Topics: Arctic region, Brittleness, Failure, Fracture (Materials), Fracture (Process), Offshore structures, Design, Steel, Temperature, Fracture toughness
Proceedings Papers

Fatigue of Risers and Pipeline Girth Welds

Agnes Marie Horn, Stig Wästberg, Rogers Cordes
Proc. ASME. OMAE2013, Volume 3: Materials Technology; Ocean Space Utilization, V003T03A030, June 9–14, 2013
Paper No: OMAE2013-10889
DOI: https://doi.org/10.1115/OMAE2013-10889
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Topics: Fatigue, Pipeline risers, Pipelines, Risers (Casting), Welded joints, Fatigue cracks, Nondestructive evaluation, Pipes, Currents, Failure
Proceedings Papers

Effects of Aging on the Mechanical Properties of Pipeline Steels

Martin Hukle, Brian Newbury, Dan Lillig, Jonathan Regina, Agnes Marie Horn
Proc. ASME. OMAE2008, Volume 5: Materials Technology; CFD and VIV, 457-470, June 15–20, 2008
Paper No: OMAE2008-57874
DOI: https://doi.org/10.1115/OMAE2008-57874
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Topics: Mechanical properties, Pipelines, Steel, Pipes, Elongation, Tensile strength, Coating processes, Coatings, Corrosion protection, Design
Proceedings Papers

Material Challenges in Arctic Areas

Agnes Marie Horn, Per Egil Kvaale, Mons Hauge
Proc. ASME. OMAE2007, Volume 4: Materials Technology; Ocean Engineering, 209-216, June 10–15, 2007
Paper No: OMAE2007-29579
DOI: https://doi.org/10.1115/OMAE2007-29579
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Topics: Arctic region, Climate, Low temperature, Pipelines, Steel, Structural steel, Alloys, Bulk solids, Engineering standards, Fracture toughness
Proceedings Papers

Development and Qualification of Pipeline Welding Procedures for Strain Based Design

Martin W. Hukle, Dan B. Lillig, Brian D. Newbury, John Dwyer, Agnes Marie Horn
Proc. ASME. OMAE2007, Volume 4: Materials Technology; Ocean Engineering, 217-223, June 10–15, 2007
Paper No: OMAE2007-29581
DOI: https://doi.org/10.1115/OMAE2007-29581
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Topics: Design, Pipelines, Welding, Testing, Construction, Gas metal arc welding, Ice, Pipes, Robustness, Underwater pipelines
Proceedings Papers

Cost Effective Fabrication of Large Diameter High Strength Titanium Catenary Riser

Agnes Marie Horn, Mons Hauge, Per-Arne Ro̸stadsand, Bjarne Bjo̸rnbakk, Peer Dahlberg, Terje Fossesholm
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 331-337, June 23–28, 2002
Paper No: OMAE2002-28445
DOI: https://doi.org/10.1115/OMAE2002-28445
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Topics: Manufacturing, Pipeline risers, Risers (Casting), Titanium, Welded joints, Coating processes, Coatings, Pipes, Weight (Mass), Welding