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Anees Udyawar
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Journal Articles

Technical Basis for Revising the Fatigue Crack Growth Rates for Ferritic Steels in the ASME Code Section XI

Kunio Hasegawa, Yoshihito Yamaguchi, Anees Udyawar
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Briefs
J. Pressure Vessel Technol. June 2025, 147(3): 034501.
Paper No: PVT-24-1127
https://doi.org/10.1115/1.4067679
Published Online: February 7, 2025
View Articletitled, Technical Basis for Revising the Fatigue Crack Growth Rates for Ferritic Steels in the ASME Code Section XI
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Topics: ASME Standards, Fatigue cracks, Fracture (Materials), Steel, Stress
Proceedings Papers

Suggested Improvements to ASME Code Section XI, Nonmandatory Appendix L Flaw Tolerance Approach

Alexandria Scott, Anees Udyawar, Joshua Coleman, Nathan Glunt
Proc. ASME. PVP2023, Volume 1: Codes & Standards, V001T01A005, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-107388
https://doi.org/10.1115/PVP2023-107388
View Paper titled, Suggested Improvements to ASME Code Section XI, Nonmandatory Appendix L Flaw Tolerance Approach
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Topics: ASME Standards, Fatigue, Fracture (Materials)
Proceedings Papers

Organization and Basis of ASME Section XI, Nonmandatory Appendix Y, “Crack Growth Rate Curves”

Glenn White, Kevin Fuhr, Anees Udyawar, Doug Scarth, Do Jun Shim
Proc. ASME. PVP2023, Volume 1: Codes & Standards, V001T01A002, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-105251
https://doi.org/10.1115/PVP2023-105251
View Paper titled, Organization and Basis of ASME Section XI, Nonmandatory Appendix Y, “Crack Growth Rate Curves”
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Topics: ASME Boiler and Pressure Vessel Code, Fatigue cracks, Fracture (Materials), Stress corrosion cracking
Proceedings Papers

Impact of Thermal Ageing Embrittlement on Westinghouse and Combustion Engineering-Designed Pressurized Water Reactor Pressurizers Based on Pressure-Temperature Limit Comparison

Alexandria M. Scott, Louis W. Turicik, J. Brian Hall, Anees Udyawar, Amy E. Freed, Elliot J. Long
Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A022, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-85520
https://doi.org/10.1115/PVP2022-85520
View Paper titled, Impact of Thermal Ageing Embrittlement on Westinghouse and Combustion Engineering-Designed Pressurized Water Reactor Pressurizers Based on Pressure-Temperature Limit Comparison
Open the PDF for Impact of Thermal Ageing Embrittlement on Westinghouse and Combustion Engineering-Designed Pressurized Water Reactor Pressurizers Based on Pressure-Temperature Limit Comparison in another window
Topics: Combustion, Combustion engineering, Embrittlement, Pressure, Pressurized water reactors, Temperature
Journal Articles

Allowable Cracks Related to Penetration for Part-Through Cracks in Pipes Subjected to Bending Stresses

Kunio Hasegawa, Yinsheng Li, Bohumír Strnadel, Anees Udyawar
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2022, 144(5): 051305.
Paper No: PVT-21-1175
https://doi.org/10.1115/1.4053482
Published Online: February 14, 2022
View Articletitled, Allowable Cracks Related to Penetration for Part-Through Cracks in Pipes Subjected to Bending Stresses
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Topics: Fracture (Materials), Pipes, Stress, Collapse
Proceedings Papers

Modeling Crack Growth in ASME Section XI Flaw Evaluations

W. H. Bamford, Anees Udyawar
Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A003, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-64992
https://doi.org/10.1115/PVP2021-64992
View Paper titled, Modeling Crack Growth in ASME Section XI Flaw Evaluations
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Topics: ASME Standards, Fracture (Materials), Modeling
Proceedings Papers

Recent Operational Experience of Pressurized Water Reactor Safety Injection and Drain Line Cracking and Supporting Flaw Evaluations

Greg Imbrogno, Stephen Marlette, Alexandria Carolan, Anees Udyawar, Mark Gray
Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A056, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93945
https://doi.org/10.1115/PVP2019-93945
View Paper titled, Recent Operational Experience of Pressurized Water Reactor Safety Injection and Drain Line Cracking and Supporting Flaw Evaluations
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Topics: Boron, Cracking (Materials), Fracture (Process), Pressurized water reactors, Safety
Proceedings Papers

Impact of Using ASME Section XI Code Case N-830 on Plant Heatup and Cooldown Pressure-Temperature Limit Curves for Pressurized Water Reactors

Alexandria Carolan, Benjamin Mays, Anees Udyawar, J. Brian Hall
Proc. ASME. PVP2019, Volume 1: Codes and Standards, V001T01A053, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93081
https://doi.org/10.1115/PVP2019-93081
View Paper titled, Impact of Using ASME Section XI Code Case N-830 on Plant Heatup and Cooldown Pressure-Temperature Limit Curves for Pressurized Water Reactors
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Topics: Pressure, Pressurized water reactors, Temperature
Proceedings Papers

Technical Basis for Expansion of ASME BPVC Section XI, KIC Curve Applicability

Hongqing Xu, Nathan Palm, Anees Udyawar
Proc. ASME. PVP2019, Volume 1: Codes and Standards, V001T01A005, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93988
https://doi.org/10.1115/PVP2019-93988
View Paper titled, Technical Basis for Expansion of ASME BPVC Section XI, KIC Curve Applicability
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Topics: ASME Boiler and Pressure Vessel Code, Base metals, Failure, Fracture (Materials), Fracture mechanics, Fracture toughness, Heat, Metals, Pressure vessels, Steel
Proceedings Papers

Rules for Flaw Interaction for Subsurface Flaws in Operating Pressurized Vessels: Technical Basis of Code Case N-877

Valéry Lacroix, Pierre Dulieu, Sebastien Blasset, Ralf Tiete, Yinsheng Li, Kunio Hasegawa, Warren Bamford, Anees Udyawar
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A048, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84120
https://doi.org/10.1115/PVP2018-84120
View Paper titled, Rules for Flaw Interaction for Subsurface Flaws in Operating Pressurized Vessels: Technical Basis of Code Case N-877
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Topics: ASME Standards, Finite element methods, Finite element model, Fitness-for-service, Inspection, Pressure, Pressure vessels, Sensitivity analysis, Vessels
Proceedings Papers

ASME Section XI Appendix L Flaw Tolerance Evaluation of Pressurized Water Reactor Piping Systems to Support Second License Renewal (80-Years Operation)

Anees Udyawar, Charles Tomes, Alexandria Carolan, Steve Marlette, Thomas Meikle, Warren Bamford
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A020, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84346
https://doi.org/10.1115/PVP2018-84346
View Paper titled, ASME Section XI Appendix L Flaw Tolerance Evaluation of Pressurized Water Reactor Piping Systems to Support Second License Renewal (80-Years Operation)
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Topics: Licensing, Piping systems, Pressurized water reactors, Fatigue, Transients (Dynamics), Cycles, In-service inspection, Inspection, Construction, Design
Proceedings Papers

Demonstrate ASME Section XI Appendix G Margins for Pressurized Water Reactor Inlet and Outlet Nozzle Corner Regions

Anees Udyawar, J. Brian Hall, Justin Webb, Alexandria Carolan
Proc. ASME. PVP2018, Volume 1B: Codes and Standards, V01BT01A068, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84345
https://doi.org/10.1115/PVP2018-84345
View Paper titled, Demonstrate ASME Section XI Appendix G Margins for Pressurized Water Reactor Inlet and Outlet Nozzle Corner Regions
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Topics: Corners (Structural elements), Nozzles, Pressurized water reactors, Temperature, Pressure, Finite element analysis, Fracture toughness, Stress, Reactor vessels, Ductility
Proceedings Papers

Technical Basis for ASME Code Section XI Nonmandatory Appendix C Update

Consuelo E. Guzman-Leong, Anees Udyawar
Proc. ASME. PVP2017, Volume 1A: Codes and Standards, V01AT01A004, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65058
https://doi.org/10.1115/PVP2017-65058
View Paper titled, Technical Basis for ASME Code Section XI Nonmandatory Appendix C Update
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Topics: ASME Standards, Stress, Pipes, Cylinders, Fracture (Materials), Torsion, Boilers, Failure mechanisms, Flow (Dynamics), Fracture toughness
Proceedings Papers

Example Analysis for Environmental Fatigue Crack Growth in Austenitic Stainless Steel Piping Using Code Case N-809

Warren H. Bamford, Russell C. Cipolla, Anees Udyawar, Nathan L. Glunt
Proc. ASME. PVP2015, Volume 1A: Codes and Standards, V01AT01A012, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45967
https://doi.org/10.1115/PVP2015-45967
View Paper titled, Example Analysis for Environmental Fatigue Crack Growth in Austenitic Stainless Steel Piping Using Code Case N-809
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Topics: Fatigue cracks, Pipes, Stainless steel, Pressurized water reactors, Stress, Engineering standards, Nuclear reactor coolants, Temperature
Proceedings Papers

Stress Intensity Factor Influence Coefficients for Semi-Elliptical Axial Surface Flaws for Cylindrical Components With Large Thickness to Radius Ratios

Nathan Glunt, Anees Udyawar, Christopher Ng
Proc. ASME. PVP2014, Volume 3: Design and Analysis, V003T03A079, July 20–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: PVP2014-28047
https://doi.org/10.1115/PVP2014-28047
View Paper titled, Stress Intensity Factor Influence Coefficients for Semi-Elliptical Axial Surface Flaws for Cylindrical Components With Large Thickness to Radius Ratios
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Topics: Stress, Databases, Fracture (Materials), Geometry, Nuclear power stations, Pressurized water reactors, American Petroleum Institute, Engineering standards, Finite element analysis, In-service inspection