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Proceedings Papers

A Review of Current Best Practice for Validation of Probabilistic Fracture Mechanics Codes for Assessment of Nuclear Structural Integrity

Steven X. Xu, David L. Rudland, Douglas A. Scarth
Proc. ASME. PVP2023, Volume 1: Codes & Standards, V001T01A054, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-107513
https://doi.org/10.1115/PVP2023-107513
View Paper titled, A Review of Current Best Practice for Validation of Probabilistic Fracture Mechanics Codes for Assessment of Nuclear Structural Integrity
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Topics: Fracture mechanics
Proceedings Papers

An Extended Process-Zone Modeling Framework for Overload Crack Initiation in Zr-2.5Nb Pressure Tubes

Steven X. Xu, Douglas A. Scarth, David Cho
Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A034, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-85158
https://doi.org/10.1115/PVP2022-85158
View Paper titled, An Extended Process-Zone Modeling Framework for Overload Crack Initiation in Zr-2.5Nb Pressure Tubes
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Topics: Fracture (Materials), Modeling, Pressure, Stress, Zirconium
Proceedings Papers

Modeling of Plastic Zones and Fracture Paths in Representative Material Elements With Bulk Hydrides in Hydrided Irradiated Zr-2.5Nb Pressure Tube Materials Under Plane Strain Conditions

Shengjia Wu, Jwo Pan, Douglas A. Scarth
Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A003, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-62458
https://doi.org/10.1115/PVP2021-62458
View Paper titled, Modeling of Plastic Zones and Fracture Paths in Representative Material Elements With Bulk Hydrides in Hydrided Irradiated Zr-2.5Nb Pressure Tube Materials Under Plane Strain Conditions
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Topics: Fracture (Materials), Modeling, Plane strain, Pressure, Zirconium, Stress, Elastic moduli, Finite element analysis, Stress-strain relations, Tension
Proceedings Papers

Further Improvements to ASME Section XI Code Case N-806 in a Proposed Second Revision

Robert O. McGill, George A. Antaki, Mark A. Moenssens, Douglas A. Scarth
Proc. ASME. PVP2019, Volume 1: Codes and Standards, V001T01A002, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93218
https://doi.org/10.1115/PVP2019-93218
View Paper titled, Further Improvements to ASME Section XI Code Case N-806 in a Proposed Second Revision
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Topics: Acceptance criteria, Design, Fatigue life, Finite element analysis, Inspection, Metals, Nuclear industry, Pipes, Soil, Stress
Proceedings Papers

A Simplified Large Thin Plate Model for Modeling Fracture Behavior of a Hydrided Irradiated Zr-2.5Nb Pressure Tube Specimen With an Axial Crack

Shin-Jang Sung, Jwo Pan, Cheng Liu, Douglas A. Scarth
Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A015, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93762
https://doi.org/10.1115/PVP2019-93762
View Paper titled, A Simplified Large Thin Plate Model for Modeling Fracture Behavior of a Hydrided Irradiated Zr-2.5Nb Pressure Tube Specimen With an Axial Crack
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Topics: Fracture (Materials), Modeling, Pressure, Zirconium, Finite element model, Stress
Proceedings Papers

Deformation Behavior and J-Integral of Macroscopic Hydride Platelet Clusters in Hydrided Zr-2.5Nb Pressure Tube Materials Under Plane Strain Conditions

Shengjia Wu, Jwo Pan, Douglas A. Scarth, Sterling St. Lawrence
Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A016, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93763
https://doi.org/10.1115/PVP2019-93763
View Paper titled, Deformation Behavior and J-Integral of Macroscopic Hydride Platelet Clusters in Hydrided Zr-2.5Nb Pressure Tube Materials Under Plane Strain Conditions
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Topics: Deformation, Plane strain, Platelets, Pressure, Zirconium, Fracture (Materials), Mechanical behavior, Stress, Finite element analysis, Fracture toughness
Proceedings Papers

Cycle-Wise Process-Zone Model for Prediction of Delayed Hydride Cracking Initiation Under Flaw-Tip Hydride Ratcheting Conditions

Steven X. Xu, Jun Cui, Douglas A. Scarth, David Cho
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A042, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-85116
https://doi.org/10.1115/PVP2018-85116
View Paper titled, Cycle-Wise Process-Zone Model for Prediction of Delayed Hydride Cracking Initiation Under Flaw-Tip Hydride Ratcheting Conditions
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Topics: Cracking (Materials), Cycles, Fracture (Process), Heat, Fuels, Pressure, Stress, Bearings, Corrosion, Creep
Proceedings Papers

Acceptance Limits for Subsurface Voids in HDPE Piping

Phillip J. Rush, Douglas A. Scarth, Douglas Munson
Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A057, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-66146
https://doi.org/10.1115/PVP2017-66146
View Paper titled, Acceptance Limits for Subsurface Voids in HDPE Piping
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Topics: Pipes, Stress, Temperature, Acceptance criteria, ASME Standards, Construction, Creep, Density, Failure, Failure mechanisms
Proceedings Papers

Fracture Initiation in Compact Tension Specimens of Hydrided Irradiated Zr-2.5Nb Materials With Split Circumferential Hydrides

Shin-Jang Sung, Jwo Pan, Poh-Sang Lam, Douglas A. Scarth
Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A036, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-66051
https://doi.org/10.1115/PVP2017-66051
View Paper titled, Fracture Initiation in Compact Tension Specimens of Hydrided Irradiated Zr-2.5Nb Materials With Split Circumferential Hydrides
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Topics: Fracture (Materials), Tension, Zirconium, Fracture (Process), Stress, Failure, Finite element analysis, Fracture toughness, Stress-strain relations, Temperature
Proceedings Papers

Fracture Initiation in Pressure Tube Specimens of Hydrided Irradiated Zr-2.5Nb Materials With Split Circumferential Hydrides

Shin-Jang Sung, Jwo Pan, Poh-Sang Lam, Douglas A. Scarth
Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A037, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-66052
https://doi.org/10.1115/PVP2017-66052
View Paper titled, Fracture Initiation in Pressure Tube Specimens of Hydrided Irradiated Zr-2.5Nb Materials With Split Circumferential Hydrides
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Topics: Fracture (Materials), Pressure, Zirconium, Fracture (Process), Temperature, Finite element analysis, Fracture toughness, Stress
Proceedings Papers

Crack Extensions in Compact Tension Specimens of Hydrided Irradiated Zr-2.5Nb Materials Using Cohesive Zone Model

Shengjia Wu, Shin-Jang Sung, Jwo Pan, Poh-Sang Lam, Douglas A. Scarth
Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A025, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65022
https://doi.org/10.1115/PVP2017-65022
View Paper titled, Crack Extensions in Compact Tension Specimens of Hydrided Irradiated Zr-2.5Nb Materials Using Cohesive Zone Model
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Topics: Fracture (Materials), Tension, Zirconium, Finite element analysis, Stress, Displacement, Fittings, Calibration, Separation (Technology), Stress-strain curves
Proceedings Papers

Probabilistic Assessment of CANDU Reactor Core for Risk of Pressure Tube Failure due to Presence of In-Service Flaws

David Cho, Danny H. B. Mok, Steven X. Xu, Douglas A. Scarth
Proc. ASME. PVP2017, Volume 1B: Codes and Standards, V01BT01A008, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-66101
https://doi.org/10.1115/PVP2017-66101
View Paper titled, Probabilistic Assessment of CANDU Reactor Core for Risk of Pressure Tube Failure due to Presence of In-Service Flaws
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Topics: Failure, Pressure, Risk, Fracture (Materials), Bearings, Fuels, Zirconium, Corrosion, Erosion, In-service inspection
Proceedings Papers

Development and Application of Oxide Wedging Crack Growth Model for CANDU Zr-2.5Nb Pressure Tubes

Douglas A. Scarth, Preeti Doddihal, Monique Ip
Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A035, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63987
https://doi.org/10.1115/PVP2016-63987
View Paper titled, Development and Application of Oxide Wedging Crack Growth Model for CANDU Zr-2.5Nb Pressure Tubes
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Topics: Fracture (Materials), Pressure, Zirconium, Manufacturing, Nuclear reactor coolants, Corrosion, Fitness-for-service, Ultrasonic testing
Proceedings Papers

Three-Dimensional Finite Element Analyses of Compact Tension Specimens of Irradiated Zr-2.5Nb Materials Using Submodeling

Shin-Jang Sung, Jwo Pan, Poh-Sang Lam, Douglas A. Scarth
Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A031, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63862
https://doi.org/10.1115/PVP2016-63862
View Paper titled, Three-Dimensional Finite Element Analyses of Compact Tension Specimens of Irradiated Zr-2.5Nb Materials Using Submodeling
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Topics: Finite element analysis, Tension, Zirconium, Fracture (Materials), Stress, Shapes, Bone, Fracture toughness, Plane strain
Proceedings Papers

Three-Dimensional Finite Element Analyses of Thin-Sliced Compact Tension Specimens of Irradiated Zr-2.5Nb Materials With Consideration of Split Circumferential Hydrides

Shin-Jang Sung, Jwo Pan, Poh-Sang Lam, Douglas A. Scarth
Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A032, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63863
https://doi.org/10.1115/PVP2016-63863
View Paper titled, Three-Dimensional Finite Element Analyses of Thin-Sliced Compact Tension Specimens of Irradiated Zr-2.5Nb Materials With Consideration of Split Circumferential Hydrides
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Topics: Finite element analysis, Tension, Zirconium, Diluents, Failure, Stress, Displacement, Finite element model, Fracture (Materials), Plane strain
Proceedings Papers

Closed-Form Relations for Stress Intensity Factor Influence Coefficients for Axial Outside Surface Flaws in Cylinders for Appendix A of ASME Section XI

Steven X. Xu, Darrell R. Lee, Douglas A. Scarth, Russell C. Cipolla
Proc. ASME. PVP2016, Volume 1A: Codes and Standards, V01AT01A009, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-64023
https://doi.org/10.1115/PVP2016-64023
View Paper titled, Closed-Form Relations for Stress Intensity Factor Influence Coefficients for Axial Outside Surface Flaws in Cylinders for Appendix A of ASME Section XI
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Topics: Cylinders, Stress, ASME Boiler and Pressure Vessel Code, Fracture mechanics, Stress concentration
Proceedings Papers

Development of Evaluation Procedures for Crack Initiation From In-Service Flaws in CANDU Zr-2.5Nb Pressure Tubes With Hydrogen

David Cho, Steven X. Xu, Douglas A. Scarth, Gordon K. Shek
Proc. ASME. PVP2016, Volume 1A: Codes and Standards, V01AT01A053, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-64009
https://doi.org/10.1115/PVP2016-64009
View Paper titled, Development of Evaluation Procedures for Crack Initiation From In-Service Flaws in CANDU Zr-2.5Nb Pressure Tubes With Hydrogen
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Topics: Fracture (Materials), Hydrogen, Pressure, Zirconium, Corrosion, Fuels, Isotopes, Acceptance criteria, Bearings, Coolants
Journal Articles

Improvements in Article A-3000 of Appendix A for Calculation of Stress Intensity Factor in Section XI of the 2015 Edition of ASME Boiler and Pressure Vessel Code

Steven X. Xu, Russell C. Cipolla, Darrell R. Lee, Douglas A. Scarth
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Review Articles
J. Pressure Vessel Technol. February 2017, 139(1): 010801.
Paper No: PVT-15-1278
https://doi.org/10.1115/1.4033450
Published Online: August 5, 2016
View Article titled, Improvements in Article A-3000 of Appendix A for Calculation of Stress Intensity Factor in Section XI of the 2015 Edition of ASME Boiler and Pressure Vessel Code
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Topics: Polynomials, Stress, Fracture (Materials), Weight (Mass), Stress concentration
eBook Chapter

Global Harmonization of Flaw Modeling/Characterization

Publisher: ASME Press
Published: 2016
ISBN: 9780791861073
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Topics: Modeling, Fitness-for-service, Design, Engineering standards, Engineers, Maintenance, Nuclear power stations, Petrochemicals, Pipelines, Pipes
Proceedings Papers

Update on Stress Intensity Factor Influence Coefficients for Axial ID Surface Flaws in Cylinders for Appendix A of ASME Section XI

Steven X. Xu, Darrell R. Lee, Douglas A. Scarth, Russell C. Cipolla
Proc. ASME. PVP2015, Volume 1A: Codes and Standards, V01AT01A013, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-46009
https://doi.org/10.1115/PVP2015-46009
View Paper titled, Update on Stress Intensity Factor Influence Coefficients for Axial ID Surface Flaws in Cylinders for Appendix A of ASME Section XI
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Topics: Cylinders, Stress, Surface cracks, Weight (Mass), American Petroleum Institute, ASME Boiler and Pressure Vessel Code, Fitness-for-service, Fracture mechanics, Geometry, Polynomials