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Robert C. Wimpory
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Proceedings Papers

Comparison of Residual Stress Measurements on Single Bead-on-Plate Welds of a Martensitic Steel Using Neutron Diffraction

Spyridon A. Alexandratos, Robert C. Wimpory, Tung-Lik Lee, Padraig Mac Ardghail, Sean B. Leen, Noel P. O’Dowd
Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A114, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21776
https://doi.org/10.1115/PVP2020-21776
View Paper titled, Comparison of Residual Stress Measurements on Single Bead-on-Plate Welds of a Martensitic Steel Using Neutron Diffraction
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Topics: Martensitic steel, Neutron diffraction, Stress, Welded joints, Instrumentation, Neutrons, Stress concentration, Welding, Base metals, Cycles
Journal Articles

Precise Measurement of Steep Residual Strain Gradients Using Neutron Diffraction in Strongly Absorbing Materials with Chemical Compositional Gradients

Robert C. Wimpory, Michael Hofmann, Vasileios Akrivos, Mike C. Smith, Thilo Pirling, Carsten Ohms
Journal: Materials Performance and Characterization
Publisher: ASTM International
Article Type: Technical Papers
Matls. Perf. Charact.. October 2018, 7(4): 488–503.
Paper No: MPC20170114
https://doi.org/10.1520/MPC20170114
Published Online: October 3, 2018
View Article titled, Precise Measurement of Steep Residual Strain Gradients Using Neutron Diffraction in Strongly Absorbing Materials with Chemical Compositional Gradients
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Journal Articles

Determination of Repair Weld Residual Stress in a Tube to Tube-Sheet Joint by Neutron Diffraction and the Finite Element Method

Yun Luo, Wenchun Jiang, Dongfeng Chen, Robert C. Wimpory, Meijuan Li, Xiaolong Liu
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. April 2018, 140(2): 021404.
Paper No: PVT-17-1152
https://doi.org/10.1115/1.4039069
Published Online: February 20, 2018
View Article titled, Determination of Repair Weld Residual Stress in a Tube to Tube-Sheet Joint by Neutron Diffraction and the Finite Element Method
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Topics: Maintenance, Neutron diffraction, Stress, Welding, Finite element methods, Residual stresses
Proceedings Papers

Quantification of Residual Stresses Induced by Prior Loading at High Temperatures

Ali N. Mehmanparast, Catrin M. Davies, Robert C. Wimpory, Kamran M. Nikbin
Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 145-151, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57269
https://doi.org/10.1115/PVP2011-57269
View Paper titled, Quantification of Residual Stresses Induced by Prior Loading at High Temperatures
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Topics: High temperature, Residual stresses, Fracture (Materials), Stress, Creep, Compression, Damage, Fracture toughness, Fatigue, Fatigue cracks
Proceedings Papers

Specimen Geometry Effects on Creep Crack Initiation and Growth in Parent Materials and Weldments

Catrin M. Davies, Robert C. Wimpory, David W. Dean, Kamran M. Nikbin
Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 153-161, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57330
https://doi.org/10.1115/PVP2011-57330
View Paper titled, Specimen Geometry Effects on Creep Crack Initiation and Growth in Parent Materials and Weldments
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Topics: Creep, Fracture (Materials), Geometry, Stress, Fracture (Process), High temperature, Steel, Tension, Testing, Heat
Proceedings Papers

Study of Creep Relaxation Behaviour of 316H Austenitic Steels Under Mechanically Induced Residual Stress

Hamed Yazdani Nezhad, Noel P. O’Dowd, Catrin M. Davies, Kamran M. Nikbin, Robert C. Wimpory
Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 197-204, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57695
https://doi.org/10.1115/PVP2011-57695
View Paper titled, Study of Creep Relaxation Behaviour of 316H Austenitic Steels Under Mechanically Induced Residual Stress
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Topics: Aeroelasticity, Steel, Stress, Fracture (Materials), Tension, Creep, Displacement, Finite element analysis, Neutron diffraction, Pressure vessels
Proceedings Papers

Optimising Residual Stress Measurements and Predictions in a Welded Benchmark Specimen: A Review of Phase 2 of the NeT Task Group 1 Single Bead on Plate Round Robin

Michael C. Smith, Ann C. Smith, Robert C. Wimpory, Carsten Ohms, Brahim Nadri, P. John Bouchard
Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 277-301, July 26–30, 2009
Publisher: American Society of Mechanical Engineers
Paper No: PVP2009-77157
https://doi.org/10.1115/PVP2009-77157
View Paper titled, Optimising Residual Stress Measurements and Predictions in a Welded Benchmark Specimen: A Review of Phase 2 of the NeT Task Group 1 Single Bead on Plate Round Robin
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Topics: Stress, Kinematics, Constitutive equations, High temperature, Welding, Engineering simulation, Finite element analysis, Residual stresses, Simulation, Collaboration
Proceedings Papers

The Effects of Constraint and Compressive or Tensile Residual Stresses on Brittle Fracture

Simon Kamel, Robert C. Wimpory, Michael Hofmann
Proc. ASME. PVP2009, Volume 5: High Pressure Technology; Nondestructive Evaluation Division; Student Paper Competition, 305-313, July 26–30, 2009
Publisher: American Society of Mechanical Engineers
Paper No: PVP2009-77191
https://doi.org/10.1115/PVP2009-77191
View Paper titled, The Effects of Constraint and Compressive or Tensile Residual Stresses on Brittle Fracture
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Topics: Brittle fracture, Residual stresses, Stress, Fracture (Materials), Fracture toughness, Alloys, Finite element analysis, Fracture mechanics, Neutron diffraction, Shapes
Proceedings Papers

The Influence of Specimen Geometry and Test Times on High Temperature Crack Growth Behaviour in Parent and Welded 316H Stainless Steel

Catrin M. Davies, Robert C. Wimpory, Masaakai Tabuchi, David W. Dean, Kamran M. Nikbin
Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 1221-1229, July 27–31, 2008
Publisher: American Society of Mechanical Engineers
Paper No: PVP2008-61502
https://doi.org/10.1115/PVP2008-61502
View Paper titled, The Influence of Specimen Geometry and Test Times on High Temperature Crack Growth Behaviour in Parent and Welded 316H Stainless Steel
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Topics: Fracture (Materials), Geometry, High temperature, Stainless steel, Creep, Testing, Size effect, Steel, Tension
Journal Articles

Computational and Experimental Studies of High Temperature Crack Initiation in the Presence of Residual Stress

Noel P. O’Dowd, Kamran M. Nikbin, Robert C. Wimpory, Farid R. Biglari, Manus P. O’Donnell
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. November 2008, 130(4): 041403.
https://doi.org/10.1115/1.2967831
Published Online: August 22, 2008
View Article titled, Computational and Experimental Studies of High Temperature Crack Initiation in the Presence of Residual Stress
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Topics: Creep, Stress, Finite element analysis, Damage, Fracture (Materials)
Proceedings Papers

Stress Intensity Factors Due to Residual Stresses in T-Plate Welds

Noel P. O’Dowd, Kamran M. Nikbin, Hyeong Y. Lee, Robert C. Wimpory, Farid R. Biglari
Proc. ASME. PVP2004, Residual Stress, Fracture, and Stress Corrosion Cracking, 139-146, July 25–29, 2004
Publisher: American Society of Mechanical Engineers
Paper No: PVP2004-2658
https://doi.org/10.1115/PVP2004-2658
View Paper titled, Stress Intensity Factors Due to Residual Stresses in T-Plate Welds
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Topics: Residual stresses, Stress, Welded joints, Yield strength, Finite element methods, Neutron diffraction, Plates (structures), Shapes, Steel, Stress concentration
Proceedings Papers

Residual Stress Analysis in a Thick Dissimilar Metal Weld Based on Neutron Diffraction

Carsten Ohms, Dimitrios E. Katsareas, Robert C. Wimpory, Peter Hornak, Anastasius G. Youtsos
Proc. ASME. PVP2004, Residual Stress, Fracture, and Stress Corrosion Cracking, 85-92, July 25–29, 2004
Publisher: American Society of Mechanical Engineers
Paper No: PVP2004-2651
https://doi.org/10.1115/PVP2004-2651
View Paper titled, Residual Stress Analysis in a Thick Dissimilar Metal Weld Based on Neutron Diffraction
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Topics: Metals, Neutron diffraction, Stress analysis (Engineering), Stress, Residual stresses, Finite element methods, Finite element model, Heat, Pipes, Pressure vessels
Proceedings Papers

ENPOWER: Repair Welds and Residual Stresses in Clad Plates

Hieronymus Hein, Bruce Brown, Didier Lawrjaniec, Carsten Ohms, Chris Truman, Robert C. Wimpory
Proc. ASME. PVP2005, Volume 6: Materials and Fabrication, 361-369, July 17–21, 2005
Publisher: American Society of Mechanical Engineers
Paper No: PVP2005-71772
https://doi.org/10.1115/PVP2005-71772
View Paper titled, ENPOWER: Repair Welds and Residual Stresses in Clad Plates
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Topics: Maintenance, Plates (structures), Residual stresses, Welded joints
Proceedings Papers

ENPOWER: Investigations by Neutron Diffraction and Finite Element Analyses on Residual Stress Formation in Repair Welds Applied to Ferritic Steel Plates

Carsten Ohms, Robert C. Wimpory, Dimitar Neov, Didier Lawrjaniec, Anastasius G. Youtsos
Proc. ASME. PVP2005, Volume 6: Materials and Fabrication, 385-393, July 17–21, 2005
Publisher: American Society of Mechanical Engineers
Paper No: PVP2005-71786
https://doi.org/10.1115/PVP2005-71786
View Paper titled, ENPOWER: Investigations by Neutron Diffraction and Finite Element Analyses on Residual Stress Formation in Repair Welds Applied to Ferritic Steel Plates
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Topics: Base metals, Finite element analysis, Heat, Maintenance, Neutron diffraction, Plates (structures), Residual stresses, Steel, Stress, Welded joints
Proceedings Papers

Measurement of Residual Stress in as Received and Repaired Clad Components

Carsten Ohms, Chris Truman, Robert C. Wimpory, Hans Gripenberg, David Smith, Anastasius G. Youtsos
Proc. ASME. PVP2006-ICPVT-11, Volume 6: Materials and Fabrication, 917-925, July 23–27, 2006
Publisher: American Society of Mechanical Engineers
Paper No: PVP2006-ICPVT-11-93996
https://doi.org/10.1115/PVP2006-ICPVT-11-93996
View Paper titled, Measurement of Residual Stress in as Received and Repaired Clad Components
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Topics: Stress, Cladding systems (Building), Maintenance, Neutron diffraction, Pressure vessels, Coating processes, Coatings, Drilling, Experimental methods, Fracture (Materials)
Proceedings Papers

Computational and Experimental Studies of High Temperature Crack Growth in the Presence of Residual Stress

Noel P. O’Dowd, Kamran M. Nikbin, Robert C. Wimpory, Farid R. Biglari, Manus P. O’Donnell
Proc. ASME. PVP2006-ICPVT-11, Volume 6: Materials and Fabrication, 327-334, July 23–27, 2006
Publisher: American Society of Mechanical Engineers
Paper No: PVP2006-ICPVT-11-93011
https://doi.org/10.1115/PVP2006-ICPVT-11-93011
View Paper titled, Computational and Experimental Studies of High Temperature Crack Growth in the Presence of Residual Stress
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Topics: Fracture (Materials), High temperature, Stress
Journal Articles

Stress Intensity Factors Due to Residual Stresses in T-Plate Welds

Noel P. O’Dowd, Kamran M. Nikbin, Hyeong Y. Lee, Robert C. Wimpory, Farid R. Biglari
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. November 2004, 126(4): 432–437.
https://doi.org/10.1115/1.1804199
Published Online: December 1, 2004
View Article titled, Stress Intensity Factors Due to Residual Stresses in T-Plate Welds
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Topics: Stress, Stress concentration, Neutron diffraction, Finite element analysis, Fracture (Materials), Steel