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Proceedings Papers

Gas Turbine Transition Duct Design Considerations

Aparna Satheesh, S. Manoharan, Sendil Soundiramourty, S. Babu
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A016, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81670
https://doi.org/10.1115/GT2022-81670
View Paper titled, Gas Turbine Transition Duct Design Considerations
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Topics: Design, Ducts, Durability, Gas turbines, Maintenance
Proceedings Papers

Evolution of Turbine Rear Frame Design for Aero Derivative Engine

Srinidhi Katti, Vishnu Vardhan Reddy, Anil Kumar Chippa, S. Babu, Federico Casadio
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT34A022, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83322
https://doi.org/10.1115/GT2022-83322
View Paper titled, Evolution of Turbine Rear Frame Design for Aero Derivative Engine
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Topics: Design, Engines, Stress, Turbines
Proceedings Papers

Gas Turbine Rotor Damper Lift-Off Study

S. Manoharan, S. Abhimanyu, S. Babu, Leonardo Tognarelli, Guido Peano
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A028, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82960
https://doi.org/10.1115/GT2022-82960
View Paper titled, Gas Turbine Rotor Damper Lift-Off Study
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Topics: Dampers, Damping, Gas turbines, Rotors
Journal Articles

Novel Tube Design for Superheater Heat Exchanger Enabled Via Additive Manufacturing

Vanshika Singh, S. S. Babu, M. M. Kirka, Anand Kulkarni
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2022, 144(4): 041407.
Paper No: PVT-22-1027
https://doi.org/10.1115/1.4054727
Published Online: June 24, 2022
View Article titled, Novel Tube Design for Superheater Heat Exchanger Enabled Via Additive Manufacturing
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Topics: Additive manufacturing, Computational fluid dynamics, Creep, Design, Flow (Dynamics), Particulate matter, Shapes, Superheaters, Flue gases, Geometry
Proceedings Papers

Reliability Analysis of Flexible PCBs

Amogh Shejwal, Ashutosh Srivastava, Sandeep Medikonda, S. Babu Aminjikarai
Proc. ASME. IMECE2021, Volume 12: Mechanics of Solids, Structures, and Fluids; Micro- and Nano- Systems Engineering and Packaging, V012T12A054, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-71540
https://doi.org/10.1115/IMECE2021-71540
View Paper titled, Reliability Analysis of Flexible PCBs
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Topics: Cables, Computer simulation, Computer-aided design, Construction, Copper, Event history analysis, Fatigue, Fatigue life, Geometry, Laptop computers
Journal Articles

Sensitivity of Thermal Predictions to Uncertain Surface Tension Data in Laser Additive Manufacturing

J. Coleman, A. Plotkowski, B. Stump, N. Raghavan, A. S. Sabau, M. J. M. Krane, J. Heigel, R. E. Ricker, L. Levine, S. S. Babu
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2020, 142(12): 122201.
Paper No: HT-19-1539
https://doi.org/10.1115/1.4047916
Published Online: October 5, 2020
View Article titled, Sensitivity of Thermal Predictions to Uncertain Surface Tension Data in Laser Additive Manufacturing
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Topics: Additive manufacturing, Fluid dynamics, Geometry, Lasers, Solidification, Surface tension, Temperature, Fluid mechanics, Computer simulation, Temperature gradient
Proceedings Papers

Development of Creep-Resistant, Alumina-Forming Ferrous Alloys for High-Temperature Structural Use

Y. Yamamoto, M. P. Brady, G. Muralidharan, B. A. Pint, P. J. Maziasz, D. Shin, B. Shassere, S. S. Babu, C.-H. Kuo
Proc. ASME. ETAM2018, ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, V001T04A003, April 3–5, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ETAM2018-6727
https://doi.org/10.1115/ETAM2018-6727
View Paper titled, Development of Creep-Resistant, Alumina-Forming Ferrous Alloys for High-Temperature Structural Use
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Topics: Alloys, Creep, High temperature, Design, Oxidation, Steam, Temperature, Corrosion, Energy / power systems, Specialty steels
Journal Articles

Heat Transfer Analysis of Slewing Ring Bearing for High Thermal Applications

S. Babu, K. Manisekar, Er. S. KalaiSelvi
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. March 2017, 9(1): 011006.
Paper No: TSEA-16-1083
https://doi.org/10.1115/1.4034511
Published Online: October 4, 2016
View Article titled, Heat Transfer Analysis of Slewing Ring Bearing for High Thermal Applications
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Topics: Bearings, Heat transfer, Lubrication, Plates (structures), Simulation, Temperature, Steel, Bearing steel, Temperature distribution, Surface roughness
Proceedings Papers

Grain Structure Refinement in Nickel Alloy Welds by Magnetic Arc Stirring

Steven L. McCracken, X. Yu, Y. C. Lim, D. F. Farson, S. S. Babu
Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 1565-1577, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57681
https://doi.org/10.1115/PVP2011-57681
View Paper titled, Grain Structure Refinement in Nickel Alloy Welds by Magnetic Arc Stirring
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Topics: Cracking (Materials), Fracture (Process), Metals, Nickel, Nickel alloys, Solidification, Ultrasonic testing, Welded joints, Welding, Gas tungsten arc welding
Journal Articles

Optimizing Ultrasonic Additive Manufactured Al 3003 Properties With Statistical Modeling

C. D. Hopkins, P. J. Wolcott, M. J. Dapino, A. G. Truog, S. S. Babu, S. A. Fernandez
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2012, 134(1): 011004.
https://doi.org/10.1115/1.4005269
Published Online: December 6, 2011
View Article titled, Optimizing Ultrasonic Additive Manufactured Al 3003 Properties With Statistical Modeling
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Topics: Additive manufacturing, Aluminum, Bonding, Failure, Fracture (Materials), Fracture (Process), Manufacturing, Oscillations, Shear (Mechanics), Statistical analysis
Proceedings Papers

Weld Metal Toughness: Sources of Variation

Marie A. Quintana, S. S. Babu, Jeff Major, Craig Dallam, Matthew James
Proc. ASME. IPC2010, 2010 8th International Pipeline Conference, Volume 2, 599-608, September 27–October 1, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IPC2010-31402
https://doi.org/10.1115/IPC2010-31402
View Paper titled, Weld Metal Toughness: Sources of Variation
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Topics: Fracture toughness, Metals, Steel, Welding, Brittleness, Fracture (Materials), Fracture (Process), Gages, Impact testing, Materials properties
Proceedings Papers

Delamination Failure of Laminated Fabric Composites Under Various Thermal Cycles

K. S. Babu, W. S. Chan, E. Dan-Jumbo
Proc. ASME. IMECE2003, Nondestructive Evaluation, 9-14, November 15–21, 2003
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2003-43656
https://doi.org/10.1115/IMECE2003-43656
View Paper titled, Delamination Failure of Laminated Fabric Composites Under Various Thermal Cycles
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Topics: Composite materials, Cycles, Delamination, Failure, Laminated fabrics, Laminates, Textiles, Damage, Resins, Tensile strength
Journal Articles

Extended GLOSS Method for Determining Inelastic Effects in Mechanical Components and Structures: Isotropic Materials

R. Seshadri, S. Babu
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. November 2000, 122(4): 413–420.
https://doi.org/10.1115/1.1308573
Published Online: July 17, 2000
View Article titled, Extended GLOSS Method for Determining Inelastic Effects in Mechanical Components and Structures: Isotropic Materials
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Topics: Creep, Damage, Relaxation (Physics), Stress, Finite element analysis, Low cycle fatigue
Journal Articles

A Robust Method for Inelastic Analysis of Components Made of Anisotropic Material

S. Babu, P. K. Iyer
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. May 1999, 121(2): 154–159.
https://doi.org/10.1115/1.2883679
Published Online: May 1, 1999
View Article titled, A Robust Method for Inelastic Analysis of Components Made of Anisotropic Material
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Topics: Anisotropy, Inelastic analysis, Finite element analysis, Stress, Equilibrium (Physics), Kinematics, Relaxation (Physics)
Journal Articles

Inelastic Analysis of Components Using a Modulus Adjustment Scheme

S. Babu, P. K. Iyer
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. February 1998, 120(1): 1–5.
https://doi.org/10.1115/1.2841879
Published Online: February 1, 1998
View Article titled, Inelastic Analysis of Components Using a Modulus Adjustment Scheme
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Topics: Equilibrium (Physics), Experimental methods, Finite element analysis, Inelastic analysis, Kinematics, Low cycle fatigue, Stress