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Proceedings Papers

Determination of Crack-Initiation in Fracture Toughness Testing Using an Experimental Key-Curve Methodology

S. Pothana, G. Wilkowski, S. Kalyanam, J. K. Hong, C. J. Sallaberry

Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A046, July 13–15, 2021

Paper No: PVP2021-61812

DOI: https://doi.org/10.1115/PVP2021-61812

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Topics: Fracture (Materials), Fracture toughness, Testing, Stress, Fittings, Instrumentation, ASTM International, Deformation, Displacement, Electric potential

Proceedings Papers

Secondary Stress Weighting Factor and Plastic Reduction Factor for Circumferential Surface Cracked Pipe and Elbow Tests at Elevated Temperature and Internal Pressure

S. Pothana, G. Wilkowski, S. Kalyanam, Y. Hioe, F. Brust, F. Orth, P. Krishnaswamy, G. Hattery, S. Burger, S. Gilbert

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A045, July 13–15, 2021

Paper No: PVP2021-60449

DOI: https://doi.org/10.1115/PVP2021-60449

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Topics: Pipes, Pressure, Stress, Temperature, Fracture (Materials), Rotation, Displacement, Design, Fracture toughness, Pipe sizes

Proceedings Papers

Strain Based Damage Model Predictions of Ductile Crack Growth in Multiple Fracture Specimen Geometries

S. Kalyanam, L. T. Hill, G. Wilkowski, Y. Hioe, F. W. Brust

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A001, July 13–15, 2021

Paper No: PVP2021-61172

DOI: https://doi.org/10.1115/PVP2021-61172

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Topics: Damage, Ductile fracture, Fracture (Materials), Modeling, Pipes, Stress, Tension, Doors, Electric potential, Failure

Proceedings Papers

Assessment of Flaws in Non-Stress Relieved Carbon Steel Welds Caused by Hydrogen Attack

K. E. Bagnoli, Z. A. Cater-Cyker, C. A. Hay, R. L. Holloman, Y. Hioe, G. Wilkowski, B. C. Rollins, K. M. Nikbin

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A033, July 13–15, 2021

Paper No: PVP2021-61603

DOI: https://doi.org/10.1115/PVP2021-61603

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Topics: Carbon steel, Hydrogen, Stress, Welded joints, Fracture (Materials), Damage, Steel, Creep, High temperature, Inspection

Journal Articles

Secondary Stress Weighting Factor and Plastic Reduction Factor of Surface Cracked Pipes Under Bending

S. Pothana, G. Wilkowski, S. Kalyanam, Y. Hioe, G. Hattery, J. Martin

J. Pressure Vessel Technol. December 2021, 143(6): 061504.

Paper No: PVT-20-1159

DOI: https://doi.org/10.1115/1.4050987

Published Online: May 31, 2021

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Topics: Fracture (Materials), Pipes, Stress, Rotation, Design

Proceedings Papers

Flaw Design for d-c EP Monitoring of Crack Initiation and Growth During Full-Size Pipe Experiments

J. K. Hong, M. Brongers, S. Kalyanam, Y. Hioe, G. Wilkowski, Y. Zeng, J. F. Hallai

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A013, August 3, 2020

Paper No: PVP2020-21579

DOI: https://doi.org/10.1115/PVP2020-21579

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Topics: Cracking (Materials), Design, Electric potential, Fracture (Materials), Fracture (Process), Modeling, Pipes, Stress

Proceedings Papers

Investigation of Circumferential Internal Surface-Cracked Pipes and Elbows Tested at Conditions Similar to PWR and an “Apparent Net-Section-Collapse” Prediction Methodology

G. Wilkowski, S. Kalyanam, S. Burger, S. Gilbert, S. Pothana, Y. Hioe, F. W. Brust, M. Myers, P. Krishnaswamy, F. Orth, G. Hattery

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A057, August 3, 2020

Paper No: PVP2020-21532

DOI: https://doi.org/10.1115/PVP2020-21532

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Topics: Collapse, Pipes, Pressurized water reactors, Stress, Fracture (Materials), Leakage, Flow (Dynamics), Surface cracks, Temperature, Bending (Stress)

Proceedings Papers

A Novel Approach to Account for Weld Residual Stresses in Pressure Vessel Flaw Assessments

F. W. Brust, L. Hill, G. Wilkowski, Y. Hioe, K. Bagnoli

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A055, July 14–19, 2019

Paper No: PVP2019-94022

DOI: https://doi.org/10.1115/PVP2019-94022

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Topics: Finite element analysis, Pressure vessels, Residual stresses, Stress, Fracture (Materials), Vessels, Inspection, Pressure, Approximation, Finite element methods

Proceedings Papers

Constraint Effects of Surface Crack Depth on Toughness: Experimental and Numerical Assessments

G. Wilkowski, S. Kalyanam, Y. Hioe, F. W. Brust, S. Pothana, M. Uddin, F. Orth

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A014, July 14–19, 2019

Paper No: PVP2019-93713

DOI: https://doi.org/10.1115/PVP2019-93713

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Topics: Fracture toughness, Surface cracks, Fracture (Materials), Stress, Pipes, Finite element analysis, Engineering standards, Errors, Failure, Failure analysis

Proceedings Papers

Direct-Current Electric Potential (D-C EP) Technique Validation Through an Experimental and Computational Study on Pipe With Surface Crack

Y. Hioe, S. Kalyanam, G. Wilkowski, F. W. Brust, E. Punch

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A017, July 14–19, 2019

Paper No: PVP2019-93771

DOI: https://doi.org/10.1115/PVP2019-93771

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Topics: Electric potential, Pipes, Surface cracks, Fracture (Materials), Finite element analysis, Probes, Calibration, Corners (Structural elements), Electric current, Electrical discharge machining

Proceedings Papers

Role of Constraint in Specimen Geometries When Evaluating Fracture Toughness/Material Fracture Resistance for a Surface-Flawed Elbow

S. Kalyanam, G. Wilkowski, F. W. Brust, Y. Hioe, E. Punch

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A065, July 14–19, 2019

Paper No: PVP2019-93732

DOI: https://doi.org/10.1115/PVP2019-93732

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Topics: Fracture (Materials), Fracture toughness, Surface cracks, Pipes, Finite element analysis, Tension, Displacement, Fatigue, Manufacturing, Pressure

Proceedings Papers

Modeling of Cracked Pipe System: Effect of Boundary Conditions on Displacement-Controlled and Load-Controlled Leak-Before-Break

M. Uddin, G. Wilkowski, E. Kurth, L. Hill, K. Bagnoli

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A066, July 14–19, 2019

Paper No: PVP2019-93927

DOI: https://doi.org/10.1115/PVP2019-93927

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Topics: Boundary-value problems, Displacement, Leak-before-break, Modeling, Pipes, Stress, Leakage, Design, Failure, Nuclear industry

Proceedings Papers

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

M. Uddin, C. Sallaberry, G. Wilkowski

Proc. ASME. PVP2019, Volume 1: Codes and Standards, V001T01A051, July 14–19, 2019

Paper No: PVP2019-93711

DOI: https://doi.org/10.1115/PVP2019-93711

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Topics: Stainless steel, Fracture toughness, Pipes, Stress, Pressurized water reactors, Casting, Ferrites (Magnetic materials), Databases, Dimensions, Embrittlement

Proceedings Papers

Next Generation Ductile Fracture Arrest Analyses for High Energy Pipelines Based on Detail Coupling of CFD and FEA Approach

K. K. Botros, E. J. Clavelle, M. Uddin, G. Wilkowski, C. Guan

Proc. ASME. IPC2018, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A002, September 24–28, 2018

Paper No: IPC2018-78097

DOI: https://doi.org/10.1115/IPC2018-78097

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Topics: Computational fluid dynamics, Ductile fracture, Finite element analysis, Pipelines, Fracture (Materials), Fracture toughness, Pipes, Geometry, Pressure, American Petroleum Institute

Proceedings Papers

Analysis of Full-Scale Burst Test Data by Examining Effects of Insulation and Using Fully-Instrumented Standard Pressed-Notch and Modified Backslot DWTT Specimens

M. Uddin, G. Wilkowski, C. Guan

Proc. ASME. IPC2018, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A015, September 24–28, 2018

Paper No: IPC2018-78243

DOI: https://doi.org/10.1115/IPC2018-78243

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Topics: Insulation, Pipes, Fracture toughness, Fracture (Materials), Soil, Ductile fracture, Steel, Testing, Clearances (Engineering), Cooling

Proceedings Papers

Initial Developments for LBB Application to HTHA Sensitive Non-Stress Relieved Carbon Steel Girth Welds in Refinery Plants

G. Wilkowski, Y. Hioe, E. Kurth, E. Punch, M. Uddin, F. Brust, K. Bagnoli, G. Pioszak

Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A001, July 15–20, 2018

Paper No: PVP2018-84669

DOI: https://doi.org/10.1115/PVP2018-84669

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Topics: Carbon steel, Stress, Welded joints, Hydrogen, Cracking (Materials), Fracture (Materials), Fracture (Process), Pipes, American Petroleum Institute, Methane

Proceedings Papers

Fracture Toughness Variation With Flaw Depth in Various Specimen Geometries and Role of Constraint in Material Fracture Resistance

Y. Hioe, S. Kalyanam, G. Wilkowski, S. Pothana, J. Martin

Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A032, July 16–20, 2017

Paper No: PVP2017-65441

DOI: https://doi.org/10.1115/PVP2017-65441

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Topics: Fracture (Materials), Fracture toughness, Pipes, Surface cracks, Stress, Collapse, Displacement, Failure mechanisms, Flat plates, Fracture mechanics

Proceedings Papers

“Apparent Net-Section-Collapse” Methodology for Circumferential Surface Flaws in Piping

S. Kalyanam, G. Wilkowski, S. Pothana, Y. Hioe, C. Sallaberry, J. Martin

Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A015, July 16–20, 2017

Paper No: PVP2017-65438

DOI: https://doi.org/10.1115/PVP2017-65438

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Topics: Collapse, Pipes, Fracture (Materials), Stress, Leakage, Surface cracks, Fracture toughness, Stainless steel, Temperature, Base metals

Proceedings Papers

Development of Secondary Stress Weighting Factor and Plastic Reduction Factor From Moment-Rotation Curves of Surface Cracked Pipe Tests

S. Pothana, G. Wilkowski, S. Kalyanam, Y. Hioe, G. Hattery, J. Martin

Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A027, July 16–20, 2017

Paper No: PVP2017-66033

DOI: https://doi.org/10.1115/PVP2017-66033

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Topics: Pipes, Rotation, Stress, Plasticity, Fracture (Materials), Design, Fracture toughness, Stress analysis (Engineering), Displacement, Hinges

Proceedings Papers

Evaluation of the Lowest Temperature for Ductile Crack Initiation in an Irradiated RPV

G. Wilkowski, F. W. Brust, M. Uddin, S. Kalyanam, V. Lacroix

Proc. ASME. PVP2016, Volume 1A: Codes and Standards, V01AT01A056, July 17–21, 2016

Paper No: PVP2016-63593

DOI: https://doi.org/10.1115/PVP2016-63593

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Topics: Ductile fracture, Temperature, Fracture toughness, Pipes, Fracture (Materials), Irradiation (Radiation exposure), Stress, Failure, Fracture (Process), Gas industry

2 3

Journal citation

NARROW

Determination of Crack-Initiation in Fracture Toughness Testing Using an Experimental Key-Curve Methodology

Secondary Stress Weighting Factor and Plastic Reduction Factor for Circumferential Surface Cracked Pipe and Elbow Tests at Elevated Temperature and Internal Pressure

Strain Based Damage Model Predictions of Ductile Crack Growth in Multiple Fracture Specimen Geometries

Assessment of Flaws in Non-Stress Relieved Carbon Steel Welds Caused by Hydrogen Attack

Secondary Stress Weighting Factor and Plastic Reduction Factor of Surface Cracked Pipes Under Bending

Flaw Design for d-c EP Monitoring of Crack Initiation and Growth During Full-Size Pipe Experiments

Investigation of Circumferential Internal Surface-Cracked Pipes and Elbows Tested at Conditions Similar to PWR and an “Apparent Net-Section-Collapse” Prediction Methodology

A Novel Approach to Account for Weld Residual Stresses in Pressure Vessel Flaw Assessments

Constraint Effects of Surface Crack Depth on Toughness: Experimental and Numerical Assessments

Direct-Current Electric Potential (D-C EP) Technique Validation Through an Experimental and Computational Study on Pipe With Surface Crack

Role of Constraint in Specimen Geometries When Evaluating Fracture Toughness/Material Fracture Resistance for a Surface-Flawed Elbow

Modeling of Cracked Pipe System: Effect of Boundary Conditions on Displacement-Controlled and Load-Controlled Leak-Before-Break

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

Next Generation Ductile Fracture Arrest Analyses for High Energy Pipelines Based on Detail Coupling of CFD and FEA Approach

Analysis of Full-Scale Burst Test Data by Examining Effects of Insulation and Using Fully-Instrumented Standard Pressed-Notch and Modified Backslot DWTT Specimens

Initial Developments for LBB Application to HTHA Sensitive Non-Stress Relieved Carbon Steel Girth Welds in Refinery Plants

Fracture Toughness Variation With Flaw Depth in Various Specimen Geometries and Role of Constraint in Material Fracture Resistance

“Apparent Net-Section-Collapse” Methodology for Circumferential Surface Flaws in Piping

Development of Secondary Stress Weighting Factor and Plastic Reduction Factor From Moment-Rotation Curves of Surface Cracked Pipe Tests

Evaluation of the Lowest Temperature for Ductile Crack Initiation in an Irradiated RPV

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