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Proceedings Papers

Rupture Proof CO 2 Pipelines by Design – Not by Chance

Gery Wilkowski, Elizabeth Twombly, Yunior Hioe
Proc. ASME. IPC2024, Volume 5: Risk and Reliability; Offshore, Upstream, and Production Pipelines; Emerging Fuels and Greenhouse Gas Emissions, V005T09A031, September 23–27, 2024
Publisher: American Society of Mechanical Engineers
Paper No: IPC2024-134007
https://doi.org/10.1115/IPC2024-134007
View Paper titled, Rupture Proof CO 2 Pipelines by Design – Not by Chance
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Topics: Carbon dioxide, Design, Ductile fracture, Fracture (Materials), Pipelines, Rupture, Welded joints
Proceedings Papers

Sensitivity Studies on the Evaluations of Hydrogen Effects on Linepipe Integrity Challenges

Lance Hill, Ken Bagnoli, Elizabeth Twombly, Ed Punch, Xiaosheng Gao, Gery Wilkowski
Proc. ASME. IPC2024, Volume 5: Risk and Reliability; Offshore, Upstream, and Production Pipelines; Emerging Fuels and Greenhouse Gas Emissions, V005T09A032, September 23–27, 2024
Publisher: American Society of Mechanical Engineers
Paper No: IPC2024-134020
https://doi.org/10.1115/IPC2024-134020
View Paper titled, Sensitivity Studies on the Evaluations of Hydrogen Effects on Linepipe Integrity Challenges
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Topics: Finite element analysis, Fracture (Materials), Hydrogen, Hydrogen embrittlement, Maintenance, Pipelines
Proceedings Papers

Evaluation of the Inherent LBB Behavior of Small-Diameter Class 1 and 2 Nuclear Piping Systems

Elizabeth Twombly, Lance Hill, Gery Wilkowski, Frederick Brust, Bruce Lin, Robert Tregoning
Proc. ASME. PVP2023, Volume 5: Materials & Fabrication, V005T06A042, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-107685
https://doi.org/10.1115/PVP2023-107685
View Paper titled, Evaluation of the Inherent LBB Behavior of Small-Diameter Class 1 and 2 Nuclear Piping Systems
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Topics: Leak-before-break, Pipes, Piping systems, Stress, Displacement, Fracture (Materials), Plasticity, Boiling water reactors, Design, Pressurized water reactors
Proceedings Papers

An Improved Axial Surface Crack Model to Predict Crack Growth and Burst Pressures Based on FE Analyses For J plastic And J-R Curve Methodology

Gery Wilkowski, Jeong K. Hong, Frederick W. Brust, Yunior Hioe
Proc. ASME. IPC2022, Volume 2: Pipeline and Facilities Integrity, V002T03A008, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-86904
https://doi.org/10.1115/IPC2022-86904
View Paper titled, An Improved Axial Surface Crack Model to Predict Crack Growth and Burst Pressures Based on FE Analyses For J plastic And J-R Curve Methodology
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Topics: Finite element analysis, Fracture (Materials), Fracture toughness, Pipes, Pressure, Surface cracks
Proceedings Papers

Initial Experimental and Analytical Efforts to Predict Sustained Load Crack Growth During a Hydrotest and Subsequent Fatigue Crack Growth During Pressure Cycling

Yunior Hioe, Fabian Orth, Gery Wilkowski, Frederick Brust, Ken Bagnoli
Proc. ASME. IPC2022, Volume 2: Pipeline and Facilities Integrity, V002T03A014, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87354
https://doi.org/10.1115/IPC2022-87354
View Paper titled, Initial Experimental and Analytical Efforts to Predict Sustained Load Crack Growth During a Hydrotest and Subsequent Fatigue Crack Growth During Pressure Cycling
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Topics: Fatigue cracks, Fracture (Materials), Pressure, Stress
Proceedings Papers

Computational Mechanics Based Validation of Crack Growth Approaches for Fracture Specimen Predictions

Sureshkumar Kalyanam, Lance Hill, Gery Wilkowski, Frederick Brust
Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A021, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84898
https://doi.org/10.1115/PVP2022-84898
View Paper titled, Computational Mechanics Based Validation of Crack Growth Approaches for Fracture Specimen Predictions
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Topics: Computational mechanics, Fracture (Materials), Damage, Modeling, Ductile fracture, Finite element methods, Finite element model, Stress, Structural steel, Tension
Proceedings Papers

Crack Growth Modeling and Constraint Behavior Observations in Complex Crack Geometries

Sureshkumar Kalyanam, Lance Hill, Gery Wilkowski, Frederick Brust
Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A002, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84841
https://doi.org/10.1115/PVP2022-84841
View Paper titled, Crack Growth Modeling and Constraint Behavior Observations in Complex Crack Geometries
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Topics: Finite element analysis, Fracture (Materials), Modeling
Proceedings Papers

Evaluation of the Fracture Behavior of Cold-Worked Elbows With Prescribed Cracks

Sureshkumar Kalyanam, Sushma Pothana, Gery Wilkowski, Yunior Hioe, Fabian Orth, Frederick Brust, Steven Gilbert
Proc. ASME. PVP2022, Volume 4B: Materials and Fabrication, V04BT06A004, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84833
https://doi.org/10.1115/PVP2022-84833
View Paper titled, Evaluation of the Fracture Behavior of Cold-Worked Elbows With Prescribed Cracks
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Topics: Fracture (Materials), Pipes, Work hardening, Fracture (Process), Stress, Acceptance criteria, Collapse, Failure, Fittings, Fracture toughness
Journal Articles

Assessing the Secondary Stress in a Pipe System With Circumferential Surface Crack Using Finite Element Modeling

Mohammed Uddin, Sureshkumar Kalyanam, Gery Wilkowski, Frederick Brust, John Martin
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2022, 144(5): 051802.
Paper No: PVT-21-1071
https://doi.org/10.1115/1.4053883
Published Online: March 8, 2022
View Articletitled, Assessing the Secondary Stress in a Pipe System With Circumferential Surface Crack Using Finite Element Modeling
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Topics: Pipes, Fracture (Materials), Stress
Journal Articles

The Huge Missing Factor in Leak-Before-Break Analysis: How a Circumferential Through-Wall-Crack in a Pipe System Changes the Flexibility and Reduces the Applied Moments

Mohammed Uddin, Gery Wilkowski, Suresh Kalyanam, Fedrick Brust
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2022, 144(3): 031306.
Paper No: PVT-20-1213
https://doi.org/10.1115/1.4053287
Published Online: February 10, 2022
View Articletitled, The Huge Missing Factor in Leak-Before-Break Analysis: How a Circumferential Through-Wall-Crack in a Pipe System Changes the Flexibility and Reduces the Applied Moments
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Topics: Finite element analysis, Fracture (Materials), Leak-before-break, Pipes, Stress
Journal Articles

Flaw Evaluation Procedure for Cast Austenitic Stainless-Steel Materials Using a Newly Developed Statistical Thermal Aging Model

Mohammed Uddin, Cédric Sallaberry, Gery Wilkowski
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2021, 143(5): 051504.
Paper No: PVT-20-1162
https://doi.org/10.1115/1.4050222
Published Online: March 22, 2021
View Articletitled, Flaw Evaluation Procedure for Cast Austenitic Stainless-Steel Materials Using a Newly Developed Statistical Thermal Aging Model
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Topics: Databases, Fracture toughness, Pipes, Stainless steel, Ferrites (Magnetic materials), Fracture (Materials), Stress, Regression models
Proceedings Papers

Fracture Toughness of Welds Using As-Welded-Geometry/SENT Specimens

Mohammed Uddin, Gery Wilkowski
Proc. ASME. IPC2016, Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, V003T05A053, September 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64596
https://doi.org/10.1115/IPC2016-64596
View Paper titled, Fracture Toughness of Welds Using As-Welded-Geometry/SENT Specimens
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Topics: Fracture toughness, Geometry, Welded joints, Fracture (Materials), Fracture (Process), Pipes, Base metals, Brittleness, Machining, Tension
Proceedings Papers

Simulation of Dynamic Crack Propagation and Arrest Using Various Types of Crack Arrestor

Mohammed Uddin, Gery Wilkowski
Proc. ASME. IPC2016, Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, V003T05A014, September 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64561
https://doi.org/10.1115/IPC2016-64561
View Paper titled, Simulation of Dynamic Crack Propagation and Arrest Using Various Types of Crack Arrestor
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Topics: Crack propagation, Fracture (Materials), Simulation, Pipes, Ductile fracture, Steel, Design, Damage, Damage mechanics, Deformation
Proceedings Papers

Bulging Factor for Axial Surface Cracks in Pipes

Do-Jun Shim, Gery Wilkowski
Proc. ASME. IPC2014, Volume 3: Materials and Joining; Risk and Reliability, V003T07A014, September 29–October 3, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IPC2014-33440
https://doi.org/10.1115/IPC2014-33440
View Paper titled, Bulging Factor for Axial Surface Cracks in Pipes
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Topics: Pipes, Surface cracks, Engineering simulation, Fracture (Materials), Pressure, Simulation
Proceedings Papers

Comparison Between Standard and Modified Back-Slotted DWTT Specimens

Do-Jun Shim, Mohammed Uddin, Gery Wilkowski, Da-Ming Duan, James Ferguson
Proc. ASME. IPC2014, Volume 3: Materials and Joining; Risk and Reliability, V003T07A046, September 29–October 3, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IPC2014-33430
https://doi.org/10.1115/IPC2014-33430
View Paper titled, Comparison Between Standard and Modified Back-Slotted DWTT Specimens
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Topics: Displacement, Ductile fracture, Finite element analysis, Fracture (Materials), Fracture toughness, Pipes, Steel, Weight (Mass)
Proceedings Papers

Prediction of Margins in the TBS Seismic Considerations Analysis for Circumferential Surface-Cracked Piping Under Beyond Design Basis Seismic Loading

Mohammed Uddin, Frederick Brust, Gery Wilkowski, Tao Zhang, A. A. Betervide, O. Mazzantini, Ricardo A. Fernandez
Proc. ASME. PVP2014, Volume 8: Seismic Engineering, V008T08A025, July 20–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: PVP2014-28819
https://doi.org/10.1115/PVP2014-28819
View Paper titled, Prediction of Margins in the TBS Seismic Considerations Analysis for Circumferential Surface-Cracked Piping Under Beyond Design Basis Seismic Loading
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Topics: Design, Pipes, Fracture (Materials), ASME Standards, Earthquake risk, Earthquakes, Finite element model, Probability, Stress, Surface cracks
Proceedings Papers

Verification Analyses for Newly Developed Automatic 3D Finite Element Crack Propagation System

Hiroaki Doi, Hitoshi Nakamura, Wenwei Gu, Do-Jun Shim, Gery Wilkowski
Proc. ASME. PVP2014, Volume 1: Codes and Standards, V001T01A095, July 20–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: PVP2014-28602
https://doi.org/10.1115/PVP2014-28602
View Paper titled, Verification Analyses for Newly Developed Automatic 3D Finite Element Crack Propagation System
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Topics: Crack propagation, Finite element analysis, Pressurized water reactors, Boilers, Engineering mechanics, Finite element methods, Finite element model, Fracture (Materials), Nozzles, Nuclear power
Proceedings Papers

Beyond Design Basis Seismic Analysis for Atucha II Nuclear Plant

Tao Zhang, Frederick W. Brust, Gery Wilkowski, Heqin Xu, Alfredo A. Betervide, Oscar Mazzantini
Proc. ASME. ICONE20-POWER2012, Volume 5: Fusion Engineering; Student Paper Competition; Design Basis and Beyond Design Basis Events; Simple and Combined Cycles, 625-634, July 30–August 3, 2012
Publisher: American Society of Mechanical Engineers
Paper No: ICONE20-POWER2012-54241
https://doi.org/10.1115/ICONE20-POWER2012-54241
View Paper titled, Beyond Design Basis Seismic Analysis for Atucha II Nuclear Plant
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Topics: Design, Fracture (Materials), Nuclear power stations, Pipes, Safety, Seismic analysis
Journal Articles

Leak-Before-Break Under Beyond Design Basis Seismic Loading

Tao Zhang, Frederick W. Brust, Gery Wilkowski, Heqin Xu, Alfredo A. Betervide, Oscar Mazzantini
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2013, 135(5): 051801.
Paper No: PVT-12-1030
https://doi.org/10.1115/1.4024442
Published Online: September 16, 2013
View Articletitled, Leak-Before-Break Under Beyond Design Basis Seismic Loading
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Topics: Design, Fracture (Materials), Pipes, Rotation, Earthquakes
Proceedings Papers

LBB Under Beyond Design Basis Seismic Loading

Tao Zhang, Frederick W. Brust, Gery Wilkowski, Heqin Xu, Alfredo A. Betervide, Oscar Mazzantini
Proc. ASME. PVP2012, Volume 8: Seismic Engineering, 55-64, July 15–19, 2012
Publisher: American Society of Mechanical Engineers
Paper No: PVP2012-78581
https://doi.org/10.1115/PVP2012-78581
View Paper titled, LBB Under Beyond Design Basis Seismic Loading
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Topics: Design, Fracture (Materials), Nuclear power stations, Pipes, Earthquakes, Heavy water reactors, Leakage, Water, Construction, Dynamic response