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Proceedings Papers

Fatigue Crack Growth Rate Testing for Clad and Lined Pipe Girth Weld

Zhengmao Yang, Youyou Wu, Jens P. Tronskar, Daqin Xu
Proc. ASME. OMAE2019, Volume 4: Materials Technology, V004T03A023, June 9–14, 2019
Paper No: OMAE2019-95500
DOI: https://doi.org/10.1115/OMAE2019-95500
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Topics: Fatigue cracks, Pipes, Testing, Fracture (Materials), Calibration, Crack propagation, Electric fields, Alloys, Carbon steel, Electric current
Proceedings Papers

Remaining Life Assessment and Life Extension of Offshore Pipelines

Jens P. Tronskar
Proc. ASME. OMAE2018, Volume 4: Materials Technology, V004T03A002, June 17–22, 2018
Paper No: OMAE2018-78482
DOI: https://doi.org/10.1115/OMAE2018-78482
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Topics: Life extension, Remaining life assessment, Underwater pipelines, Pipelines, Design, Damage, Ocean engineering, Production facilities, Risk, Service life (Equipment)
Proceedings Papers

Background and New Revision of DNVGL-RP-F108

Steinar Lindberg Bjerke, Jens P. Tronskar, Steven Chong, Asle Venås
Proc. ASME. OMAE2018, Volume 4: Materials Technology, V004T03A030, June 17–22, 2018
Paper No: OMAE2018-78652
DOI: https://doi.org/10.1115/OMAE2018-78652
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Topics: Acceptance criteria, Collapse, Computation, Deformation, Fatigue, Fatigue life, Finite element analysis, Fracture (Materials), Fracture (Process), Fracture mechanics
Proceedings Papers

Pipeline Girth Weld Inspection and Flaw Acceptance Criteria for Sour Service Applications

Shashi Bhushan Kumar, Kapil Mohan, Shaodong Zhang, Jens P. Tronskar
Proc. ASME. OMAE2017, Volume 4: Materials Technology, V004T03A005, June 25–30, 2017
Paper No: OMAE2017-62181
DOI: https://doi.org/10.1115/OMAE2017-62181
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Topics: Acceptance criteria, Inspection, Pipelines, Testing, Welded joints, Carbon steel, Condensed matter, Cracking (Materials), Crude oil, Design
Proceedings Papers

Optimization in Testing Techniques for Fracture Resistance Evaluation in Sour Environments

Wu Youyou, Chong Tse-Ven Steven, Xu Daqin, Jens P. Tronskar
Proc. ASME. OMAE2017, Volume 4: Materials Technology, V004T03A003, June 25–30, 2017
Paper No: OMAE2017-61556
DOI: https://doi.org/10.1115/OMAE2017-61556
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Topics: Fracture (Materials), Optimization, Testing, Fracture toughness, Geometry, Pipelines, Tension
Proceedings Papers

Cofferdam and Hyperbaric “Live” Repair of Gas Pipeline Leaks

Jens P. Tronskar, Chon Gee Lee
Proc. ASME. OMAE2016, Volume 4: Materials Technology, V004T03A004, June 19–24, 2016
Paper No: OMAE2016-55077
DOI: https://doi.org/10.1115/OMAE2016-55077
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Topics: Cofferdams, Leakage, Maintenance, Pipelines, Underwater pipelines, Water, Containment, Pressure, Clamps (Tools), Finite element analysis
Proceedings Papers

“Live” Repair of Gas Pipeline With Deep Girth Weld Crack

Jens P. Tronskar, Rikard Törnqvist, Ong Hock Guan, William A. Bruce
Proc. ASME. PVP2015, Volume 6B: Materials and Fabrication, V06BT06A044, July 19–23, 2015
Paper No: PVP2015-46005
DOI: https://doi.org/10.1115/PVP2015-46005
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Topics: Fracture (Materials), Maintenance, Pipelines, Welding, Inspection, Pipes, Fracture mechanics, Risk, American Petroleum Institute, Chemistry
Proceedings Papers

Avoiding Local Brittle Zones in Offshore Pipeline Girth Welds for Reeling Installation Involving Large Plastic Strain

Jens P. Tronskar, Vebjørn Andresen
Proc. ASME. OMAE2013, Volume 3: Materials Technology; Ocean Space Utilization, V003T03A041, June 9–14, 2013
Paper No: OMAE2013-11094
DOI: https://doi.org/10.1115/OMAE2013-11094
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Topics: Brittleness, Underwater pipelines, Welded joints, Pipelines, Fracture (Materials), Fracture (Process), Fracture toughness, Acceptance criteria, Structural steel, Carbon
Proceedings Papers

Fracture Toughness Testing and Validation of Pipeline Girth Weld Flaw Acceptance Criteria for Sour Service Under Large Strain

You You Wu, Wen Guo Yuan, Tse Ven Steven Chong, Jens P. Tronskar
Proc. ASME. OMAE2011, Volume 3: Materials Technology; Jan Vugts Symposium on Design Methodology of Offshore Structures; Jo Pinkster Symposium on Second Order Wave Drift Forces on Floating Structures; Johan Wichers Symposium on Mooring of Floating Structures in Waves, 387-391, June 19–24, 2011
Paper No: OMAE2011-49683
DOI: https://doi.org/10.1115/OMAE2011-49683
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Topics: Acceptance criteria, Fracture toughness, Pipelines, Testing, Buckling, Failure, Underwater pipelines, Welded joints
Proceedings Papers

Effects of Strain Rate on Fracture Toughness in Sour Environment

Wen Guo Yuan, Da Qin Xu, You You Wu, Jens P. Tronskar
Proc. ASME. OMAE2010, 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 6, 57-61, June 6–11, 2010
Paper No: OMAE2010-20298
DOI: https://doi.org/10.1115/OMAE2010-20298
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Topics: Fracture toughness, Pipelines, Testing, Welded joints, Temperature
Proceedings Papers

Fracture Toughness Testing Using SENT Specimens in a Sour Environment

Zhengmao Yang, Da Qin Xu, Jens P. Tronskar
Proc. ASME. OMAE2009, Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation, 45-53, May 31–June 5, 2009
Paper No: OMAE2009-79305
DOI: https://doi.org/10.1115/OMAE2009-79305
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Topics: Fracture toughness, Testing, Pipelines, Carbon steel, Fatigue cracks, Fracture (Materials), Pipeline risers, Risers (Casting), Underwater pipelines
Proceedings Papers

ECA of Pipeline With Girth Weld Strength Mis-Matching Subjected to Large Strain

Zhengmao Yang, Shashi Kumar, Jens P. Tronskar
Proc. ASME. OMAE2009, Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation, 75-82, May 31–June 5, 2009
Paper No: OMAE2009-79376
DOI: https://doi.org/10.1115/OMAE2009-79376
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Topics: Pipelines, Acceptance criteria, Base metals, Pipes, Stress, Alloys, Buckling, Corrosion, Design, Filler metals
Proceedings Papers

Influence of Localized Geometric Imperfections i.e. Buckles and Wrinkles on the Integrity of Pipelines

Zhengmao Yang, Kumar Shashi, Jens P. Tronskar
Proc. ASME. OMAE2008, Volume 5: Materials Technology; CFD and VIV, 41-48, June 15–20, 2008
Paper No: OMAE2008-57066
DOI: https://doi.org/10.1115/OMAE2008-57066
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Topics: Pipeline integrity, Pipes, Fracture (Materials), Fracture (Process), Pipelines, Damage, Geometry, Stress, Stress concentration, Deformation
Proceedings Papers

Probabilistic Inspection Optimization of Free-Span Surveys for Subsea Gas Pipelines

Jens P. Tronskar, Gudfinnur Sigurdsson, Olav Fyrileiv, Olav Forli, Joseph H. Kiefer, Colin Lewis
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 4, 59-72, June 23–28, 2002
Paper No: OMAE2002-28093
DOI: https://doi.org/10.1115/OMAE2002-28093
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Topics: Fatigue cracks, Fracture (Materials), Fracture (Process), Inspection, Ocean engineering, Optimization, Pipelines, Underwater pipelines, Welded joints, Probability
Proceedings Papers

Accounting for Constraint in Probabilistic Fracture Mechanics Analysis of Welds in Floating Production, Storage and Off-Loading (FPSO) Vessels

Jens P. Tronskar
Proc. ASME. OMAE2003, Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops, 327-337, June 8–13, 2003
Paper No: OMAE2003-37440
DOI: https://doi.org/10.1115/OMAE2003-37440
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Topics: Accounting, Fatigue cracks, FPSO, Fracture (Materials), Fracture mechanics, Storage, Stress, Vessels, Welded joints
Proceedings Papers

Deterministic and Probabilistic Fracture Mechanics Analysis of Pipeline Weld Flaws Accounting for Crack Tip Constraint Effects

Jens P. Tronskar, Zhang Li
Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 2, 829-846, June 20–25, 2004
Paper No: OMAE2004-51320
DOI: https://doi.org/10.1115/OMAE2004-51320
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Topics: Accounting, Arches, Fitness-for-service, Fracture (Materials), Fracture mechanics, Pipelines
Proceedings Papers

Probabilistic Integrity Assessment of Pipelines and Pressure Vessels With Localized Corrosion

Jens P. Tronskar, Zhang Li, John D. Edwards
Proc. ASME. OMAE2005, 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 3, 275-287, June 12–17, 2005
Paper No: OMAE2005-67543
DOI: https://doi.org/10.1115/OMAE2005-67543
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Topics: Corrosion, Pipelines, Pressure vessels