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Proceedings Papers

Life Assessment Technology for Combustion Turbine Blades

R. Viswanathan, A. C. Dolbec
Proc. ASME. GT1986, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries, V005T11A002, June 8–12, 1986
Publisher: American Society of Mechanical Engineers
Paper No: 86-GT-257
https://doi.org/10.1115/86-GT-257
View Paper titled, Life Assessment Technology for Combustion Turbine Blades
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Topics: Combustion, Turbine blades, Blades, Corrosion, Creep, Electricity (Physics), Embrittlement, Fatigue
Proceedings Papers

U.S. Program on Materials Technology for Ultrasupercritical Coal-Fired Steam Power Plants

R. Viswanathan, Robert Purgert
Proc. ASME. PVP2007, Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures, 57-71, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: CREEP2007-26826
https://doi.org/10.1115/CREEP2007-26826
View Paper titled, U.S. Program on Materials Technology for Ultrasupercritical Coal-Fired Steam Power Plants
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Topics: Coal, Materials science, Thermal power stations, Steam, Emissions, Power stations, Boilers, Carbon dioxide, Corrosion, Design
Proceedings Papers

Coatings for Advanced Large Frame Combustion Turbines for Power Generation

R. Viswanathan, N. S. Cheruvu, K. S. Chan
Proc. ASME. GT2003, Volume 3: Turbo Expo 2003, 567-580, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38105
https://doi.org/10.1115/GT2003-38105
View Paper titled, Coatings for Advanced Large Frame Combustion Turbines for Power Generation
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Topics: Blades, Coatings, Combustion, Energy generation, Thermomechanics, Turbines
Proceedings Papers

Development of a Thermal Barrier Coating Life Model

K. Chan, S. Cheruvu, R. Viswanathan
Proc. ASME. GT2003, Volume 3: Turbo Expo 2003, 591-595, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38171
https://doi.org/10.1115/GT2003-38171
View Paper titled, Development of a Thermal Barrier Coating Life Model
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Topics: Thermal barrier coatings, Coatings, Spallation (Nuclear physics), Gas turbines, Oxidation, Sintering, Ceramics, Cycles, Delamination, Durability
Proceedings Papers

Combustion Turbine F-Class Life Management of 1 st Stage Turbine Blades

Eric S. Wan, Paul Crimi, John Scheibel, R. Viswanathan
Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 683-690, June 3–6, 2002
Publisher: American Society of Mechanical Engineers
Paper No: GT2002-30301
https://doi.org/10.1115/GT2002-30301
View Paper titled, Combustion Turbine F-Class Life Management of 1 st Stage Turbine Blades
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Topics: Combustion, Turbine blades, Turbines, Stress, Temperature, Maintenance, Coating processes, Coatings, Creep, Damage
Proceedings Papers

Optimization of Threshold Values for Estimators Based on Single-Bit Quantized Sensors Using Genetic Algorithms

Nishant Unnikrishnan, Ajay Mahajan, Antonios Mengoulis, R. Viswanathan
Proc. ASME. IMECE2002, Dynamic Systems and Control, 1079-1084, November 17–22, 2002
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2002-39581
https://doi.org/10.1115/IMECE2002-39581
View Paper titled, Optimization of Threshold Values for Estimators Based on Single-Bit Quantized Sensors Using Genetic Algorithms
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Topics: Genetic algorithms, Optimization, Sensors, Parameter estimation, Signals, Data storage systems, Errors, Failure, Noise (Sound), Reliability
Journal Articles

An Improved Analytical Method for Life Prediction of Bolting

F. V. Ellis, D. R. Sielski, R. Viswanathan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. February 2001, 123(1): 70–74.
https://doi.org/10.1115/1.1344240
Published Online: October 23, 2000
View Article titled, An Improved Analytical Method for Life Prediction of Bolting
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Topics: Creep, Cycles, Stress, Temperature, Turbines, Valves, Relaxation (Physics), Failure, High temperature, Operating temperature
Journal Articles

Life Management of High-Temperature Piping and Tubing in Fossil Power Plants

R. Viswanathan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. August 2000, 122(3): 305–316.
https://doi.org/10.1115/1.556187
Published Online: April 5, 2000
View Article titled, Life Management of High-Temperature Piping and Tubing in Fossil Power Plants
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Topics: Creep, Damage, Failure, Fracture (Process), Pipes, Welded joints, Fracture (Materials), Cracking (Materials), Temperature, High temperature
Journal Articles

Use of Miniature Specimens for Creep-Crack-Growth Testing

Carl E. Jaske, R. Viswanathan
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Technical Papers
J. Eng. Mater. Technol. July 2000, 122(3): 327–332.
https://doi.org/10.1115/1.482814
Published Online: March 16, 2000
View Article titled, Use of Miniature Specimens for Creep-Crack-Growth Testing
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Topics: Creep, Fracture (Materials), Testing, Steel, Base metals
Journal Articles

Weld Repair of 1-1/4Cr-1/2Mo Steel Piping Girth Welds

R. Viswanathan, Technical Fellow,, D. Gandy, Manager,, S. Findlan, Manager,
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. May 2000, 122(2): 139–145.
https://doi.org/10.1115/1.556163
Published Online: March 7, 2000
View Article titled, Weld Repair of 1-1/4Cr-1/2Mo Steel Piping Girth Welds
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Topics: Maintenance, Welded joints, Pipes, Rupture, Steel
Journal Articles

Failure Mechanisms of High Temperature Components in Power Plants

R. Viswanathan, J. Stringer
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Technical Papers
J. Eng. Mater. Technol. July 2000, 122(3): 246–255.
https://doi.org/10.1115/1.482794
Published Online: February 15, 2000
View Article titled, Failure Mechanisms of High Temperature Components in Power Plants
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Topics: Creep, Failure, Fracture (Materials), Welded joints, High temperature, Damage, Fracture (Process), Fatigue
Journal Articles

Weld Repair of Steam Turbine Casings and Piping—An Industry Survey

David W. Gandy, Shane J. Findlan, R. Viswanathan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. May 2001, 123(2): 157–160.
https://doi.org/10.1115/1.1285825
Published Online: November 9, 1999
View Article titled, Weld Repair of Steam Turbine Casings and Piping—An Industry Survey
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Topics: Maintenance, Pipes, Public utilities, Steam turbines
Journal Articles

Weld Repair of 2-1/4Cr-1Mo Service-Aged Header Welds

R. Viswanathan, D. Gandy, S. Findlan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. November 1999, 121(4): 345–352.
https://doi.org/10.1115/1.2883713
Published Online: November 1, 1999
View Article titled, Weld Repair of 2-1/4Cr-1Mo Service-Aged Header Welds
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Topics: Maintenance, Welded joints, Gas tungsten arc welding, Rupture, Creep, Heat treating (Metalworking), Steel, Arc welding, Fracture toughness, Mechanical properties
Journal Articles

Weld Repair of Aged Cr-Mo Steel Piping—A Review of Literature

R. Viswanathan, Technical Fellow,, D. Gandy, Manager,
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. February 2000, 122(1): 76–85.
https://doi.org/10.1115/1.556154
Published Online: October 26, 1999
View Article titled, Weld Repair of Aged Cr-Mo Steel Piping—A Review of Literature
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Topics: Creep, Maintenance, Pipes, Rupture, Steel, Stress, Base metals, Welded joints, Temperature, Cavitation
Journal Articles

Accelerated Stress Rupture Testing for Creep Life Prediction—Its Value and Limitations

R. Viswanathan, J. Foulds
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. May 1998, 120(2): 105–115.
https://doi.org/10.1115/1.2842227
Published Online: May 1, 1998
View Article titled, Accelerated Stress Rupture Testing for Creep Life Prediction—Its Value and Limitations
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Topics: Creep, Rupture, Stress, Testing, Temperature, Failure, Damage, Electricity (Physics)
Journal Articles

Performance of Repair Welds on Service-Aged 2-1/4Cr-1Mo Girth Weldments

R. Viswanathan, D. Gandy, S. Findlan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. November 1997, 119(4): 414–422.
https://doi.org/10.1115/1.2842324
Published Online: November 1, 1997
View Article titled, Performance of Repair Welds on Service-Aged 2-1/4Cr-1Mo Girth Weldments
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Topics: Maintenance, Welded joints, Fracture toughness, Heat, Pipes, Rupture, Stress, Ductility, Life extension, Mechanical testing
eBook Chapter

Historical Overview of Improving Cleanliness of Rotor Steels for Electric Utility Applications

Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2423-6
ISBN: 978-0-8031-2423-3
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Journal Articles

Small Punch Testing for Determining the Material Toughness of Low Alloy Steel Components in Service

J. Foulds, R. Viswanathan
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. October 1994, 116(4): 457–464.
https://doi.org/10.1115/1.2904313
Published Online: October 1, 1994
View Article titled, Small Punch Testing for Determining the Material Toughness of Low Alloy Steel Components in Service
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Topics: Alloy steel, Fracture toughness, Testing, Alloys, Steel, Embrittlement, Maintenance, Mechanical properties, Structural elements (Construction), Temperature
Journal Articles

Life Assessment of Superheater/Reheater Tubes in Fossil Boilers

R. Viswanathan, S. R. Paterson, H. Grunloh, S. Gehl
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. February 1994, 116(1): 1–16.
https://doi.org/10.1115/1.2929553
Published Online: February 1, 1994
View Article titled, Life Assessment of Superheater/Reheater Tubes in Fossil Boilers
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Topics: Boilers, Superheaters, Rupture, Creep, Risk, Computers, Damage, Failure, Manufacturing, Public utilities
Journal Articles

Material Property Studies of Two High-Pressure Turbine Rotors for Remaining Life Assessment

V. P. Swaminathan, R. Viswanathan, C. P. Clark
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 1994, 116(1): 19–26.
https://doi.org/10.1115/1.2904250
Published Online: January 1, 1994
View Article titled, Material Property Studies of Two High-Pressure Turbine Rotors for Remaining Life Assessment
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Topics: High pressure (Physics), Materials properties, Remaining life assessment, Rotors, Turbines, Fracture toughness, Augers, Temperature, ASTM International, Grain boundaries