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Pedro M. Vargas
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Proceedings Papers

Fatigue and Strength Performance of Underwater Fillet Welds and Broco ® Underwater Cutting Edges

Pedro M. Vargas, Steven Altstadt, Max Lewis
Proc. ASME. OMAE2017, Volume 4: Materials Technology, V004T03A013, June 25–30, 2017
Paper No: OMAE2017-62235
https://doi.org/10.1115/OMAE2017-62235
View Paper titled, Fatigue and Strength Performance of Underwater Fillet Welds and Broco ® Underwater Cutting Edges
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Topics: Cutting, Fatigue, Welded joints, Fracture (Materials), Testing, Cracking (Materials), Fracture (Process), Flames, Heat, Hydrogen
Proceedings Papers

Issues in Welding Residual Stress Model in Fitness for Service Assessment of Crack-Like Defect in Weld Area

Jeong K. (J. K.) Hong, Richard P. Brodzinski, Pedro M. Vargas, H. Chong Rhee, K-John Young, Jorge A. Penso
Proc. ASME. OMAE2015, Volume 4: Materials Technology, V004T03A028, May 31–June 5, 2015
Paper No: OMAE2015-41319
https://doi.org/10.1115/OMAE2015-41319
View Paper titled, Issues in Welding Residual Stress Model in Fitness for Service Assessment of Crack-Like Defect in Weld Area
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Topics: Fitness-for-service, Fracture (Materials), Stress, Welding, Finite element analysis, Boundary-value problems, Ambiguity, Computer simulation, Engineering standards, Manufacturing
Proceedings Papers

Small Scale Sour Fatigue Testing With Dense Phase Gases

Weiwei Yu, Pedro M. Vargas, Ben Crowder, Sam Mishael, Ramgopal Thodla
Proc. ASME. OMAE2012, Volume 6: Materials Technology; Polar and Arctic Sciences and Technology; Petroleum Technology Symposium, 301-308, July 1–6, 2012
Paper No: OMAE2012-83973
https://doi.org/10.1115/OMAE2012-83973
View Paper titled, Small Scale Sour Fatigue Testing With Dense Phase Gases
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Topics: Fatigue testing, Gases, Water, Fracture (Materials), Fatigue, Fatigue cracks, High pressure (Physics), Temperature, Testing, Fatigue life
Proceedings Papers

Full Scale Sour Fatigue Testing With Dense Phase Gases

Pedro M. Vargas, Ben Crowder, Weiwei Yu, Sam Mishael, Keith Armstrong
Proc. ASME. OMAE2012, Volume 6: Materials Technology; Polar and Arctic Sciences and Technology; Petroleum Technology Symposium, 235-245, July 1–6, 2012
Paper No: OMAE2012-83898
https://doi.org/10.1115/OMAE2012-83898
View Paper titled, Full Scale Sour Fatigue Testing With Dense Phase Gases
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Topics: Fatigue testing, Gases, Fracture (Materials), Fatigue, Water, Pipelines, Steel, Fracture mechanics, High pressure (Physics), Petrochemicals
Proceedings Papers

Offshore Platform Fluid Structure Interaction Simulation

Ali Marzban, Murthy Lakshmiraju, Nigel Richardson, Mike Henneke, Guangyu Wu, Pedro M. Vargas, Owen Oakley
Proc. ASME. OMAE2012, Volume 2: Structures, Safety and Reliability, 235-242, July 1–6, 2012
Paper No: OMAE2012-83472
https://doi.org/10.1115/OMAE2012-83472
View Paper titled, Offshore Platform Fluid Structure Interaction Simulation
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Topics: Fluid structure interaction, Offshore platforms, Simulation, Computational fluid dynamics, Fluids, Waves, Computer software, Damage, Deflection, Deformation
Journal Articles

Corrosion Effects on Reliability of Flat Plates in Tension

Weiwei Yu, Dale G. Karr, Pedro M. Vargas
Journal: Journal of Offshore Mechanics and Arctic Engineering
Article Type: Materials Technology
J. Offshore Mech. Arct. Eng. May 2012, 134(2): 021404.
https://doi.org/10.1115/1.4004520
Published Online: December 6, 2011
View Article titled, Corrosion Effects on Reliability of Flat Plates in Tension
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Topics: Corrosion, Failure, Finite element analysis, Reliability, Safety, Shells, Ships, Stress, Stress concentration, Plates (structures)
Journal Articles

Bending Capacity Analyses of Corroded Pipeline

Weiwei Yu, Pedro M. Vargas, Dale G. Karr
Journal: Journal of Offshore Mechanics and Arctic Engineering
Article Type: Piper And Riser Technology
J. Offshore Mech. Arct. Eng. May 2012, 134(2): 021701.
https://doi.org/10.1115/1.4004521
Published Online: December 5, 2011
View Article titled, Bending Capacity Analyses of Corroded Pipeline
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Topics: Corrosion, Finite element analysis, Pipelines, Pipes, Pressure, Testing, Tension, Stress, Compression
Proceedings Papers

Consistent Endurance Fatigue Knockdown Factors for Sour Service From Industry-Wide Database

Weiwei Yu, Pedro M. Vargas, Jonathan Bowman
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, 559-570, June 19–24, 2011
Paper No: OMAE2011-50204
https://doi.org/10.1115/OMAE2011-50204
View Paper titled, Consistent Endurance Fatigue Knockdown Factors for Sour Service From Industry-Wide Database
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Topics: Databases, Fatigue, Fracture (Materials), Design, Testing, Welded joints, Embrittlement, Fatigue testing, Hydrogen, Metal surfaces
Proceedings Papers

Bending Capacity Analyses of Corroded Pipelines

Weiwei Yu, Pedro M. Vargas, Dale G. Karr
Proc. ASME. OMAE2009, Volume 3: Pipeline and Riser Technology, 401-410, May 31–June 5, 2009
Paper No: OMAE2009-79501
https://doi.org/10.1115/OMAE2009-79501
View Paper titled, Bending Capacity Analyses of Corroded Pipelines
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Topics: Pipelines, Pipes, Finite element analysis, Pressure, Testing, Compression, Containment, Corrosion, Fitness-for-service, Vessels
Proceedings Papers

Stress Based Design Guidelines for Hydrogen Induced Stress Cracking (HISC) Avoidance in Duplex Materials

Pedro M. Vargas, Stig Wa¨stberg, Paul Woollin
Proc. ASME. OMAE2009, Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation, 91-99, May 31–June 5, 2009
Paper No: OMAE2009-79504
https://doi.org/10.1115/OMAE2009-79504
View Paper titled, Stress Based Design Guidelines for Hydrogen Induced Stress Cracking (HISC) Avoidance in Duplex Materials
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Topics: Cracking (Materials), Design, Fracture (Process), Hydrogen, Stress, Creep, Cathodic protection, Failure, Failure mechanisms, Finite element analysis
Proceedings Papers

Hydrogen Induced Stress Cracking (HISC) in Duplex Stainless Steels: DNV-RP-F112, Design of Duplex Stainless Steel Subsea Equipment Exposed to Cathodic Protection

Stig Wa¨stberg, Morten Solno̸rdal, Gustav Heiberg, Rikard To¨rnqvist, Pedro M. Vargas
Proc. ASME. OMAE2009, Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation, 123-135, May 31–June 5, 2009
Paper No: OMAE2009-79655
https://doi.org/10.1115/OMAE2009-79655
View Paper titled, Hydrogen Induced Stress Cracking (HISC) in Duplex Stainless Steels: DNV-RP-F112, Design of Duplex Stainless Steel Subsea Equipment Exposed to Cathodic Protection
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Topics: Cathodic protection, Cracking (Materials), Design, Fracture (Process), Hydrogen, Ocean engineering, Stainless steel, Stress, Failure, Failure mechanisms
Proceedings Papers

Stress Concentration Factors for Stud-Less Mooring Chain Links in Fairleads

Pedro M. Vargas, Teh-Min Hsu, Wai Kong Lee
Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 2, 909-917, June 20–25, 2004
Paper No: OMAE2004-51376
https://doi.org/10.1115/OMAE2004-51376
View Paper titled, Stress Concentration Factors for Stud-Less Mooring Chain Links in Fairleads
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Topics: Chain, Mooring, Stress concentration, Fatigue, Fatigue life, American Petroleum Institute, Geometry, Modeling, Offshore installations, Spar platforms
Proceedings Papers

Tensile Strength of a Girth Weld With a Low-Strength AWSR45 Buttering Layer

Pedro M. Vargas
Proc. ASME. PVP2005, Volume 3: Design and Analysis, 395-404, July 17–21, 2005
Paper No: PVP2005-71507
https://doi.org/10.1115/PVP2005-71507
View Paper titled, Tensile Strength of a Girth Weld With a Low-Strength AWSR45 Buttering Layer
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Topics: Tensile strength, Pipes, American Petroleum Institute, Containment, Finite element analysis, Materials properties, Metals, Pressure, Wall thickness, Welding