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Proceedings Papers

Improved Simulation of Ratcheting in Straight Pipes

Tasnim Hassan, Yimin Zhu, Vernon C. Matzen
Proc. ASME. IMECE96, Development, Validation, and Application of Inelastic Methods for Structural Analysis and Design, 35-41, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0556
https://doi.org/10.1115/IMECE1996-0556
View Paper titled, Improved Simulation of Ratcheting in Straight Pipes
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Topics: Pipes, Simulation, Constitutive equations, Failure, Finite element analysis, Hardening, Kinematics, Plasticity, Pressure, Stress
Journal Articles

Critical Evaluation of a Novel Analysis Technique for Assessment of Printed Circuit Heat Exchangers in High-Temperature Nuclear Service

Avinash Shaw, Heramb P. Mahajan, Tasnim Hassan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2023, 145(3): 031302.
Paper No: PVT-21-1199
https://doi.org/10.1115/1.4057061
Published Online: March 20, 2023
View Article titled, Critical Evaluation of a Novel Analysis Technique for Assessment of Printed Circuit Heat Exchangers in High-Temperature Nuclear Service
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Topics: Printed circuit heat exchangers, Pressure, High temperature
Proceedings Papers

Mechanical Performance Evaluation of the Printed Circuit Heat Exchanger Core Experiments Under Tension and Pressure Loading

Heramb P. Mahajan, Lucas Maciel, Gracious Ngaile, Tasnim Hassan
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A027, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-81247
https://doi.org/10.1115/PVP2022-81247
View Paper titled, Mechanical Performance Evaluation of the Printed Circuit Heat Exchanger Core Experiments Under Tension and Pressure Loading
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Topics: Circuits, Creep, Diffusion bonding (Metals), Equipment performance, Heat exchangers, Pressure, Tension, Temperature, Design, Stress
Journal Articles

Proposed Material Properties, Allowable Stresses, and Design Curves of Diffusion Bonded Alloy 800H for the ASME Code Section III Division 5

Heramb P. Mahajan, Suzanne McKillop, Robert Keating, Tasnim Hassan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2022, 144(6): 061201.
Paper No: PVT-21-1145
https://doi.org/10.1115/1.4054073
Published Online: April 1, 2022
View Article titled, Proposed Material Properties, Allowable Stresses, and Design Curves of Diffusion Bonded Alloy 800H for the ASME Code Section III Division 5
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Topics: Creep, Diffusion (Physics), Stress, Temperature, Alloys, Design
Journal Articles

A Practical Analysis Framework for Assessment of Printed Circuit Heat Exchangers in High-Temperature Nuclear Service

Avinash Shaw, Heramb P. Mahajan, Tasnim Hassan
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2022, 144(4): 041404.
Paper No: PVT-21-1127
https://doi.org/10.1115/1.4052697
Published Online: December 6, 2021
View Article titled, A Practical Analysis Framework for Assessment of Printed Circuit Heat Exchangers in High-Temperature Nuclear Service
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Topics: ASME Standards, Circuits, Heat exchangers, Finite element analysis, High temperature, Stress, Temperature, Corners (Structural elements), Thermomechanics
Journal Articles

Mechanical and Microstructural Performance Evaluation of Diffusion Bonded Alloy 800H for Very High Temperature Nuclear Service

Heramb P. Mahajan, Lucas M. A. Lima, Tasnim Hassan
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. April 2022, 144(2): 021008.
Paper No: MATS-21-1167
https://doi.org/10.1115/1.4052825
Published Online: November 23, 2021
View Article titled, Mechanical and Microstructural Performance Evaluation of Diffusion Bonded Alloy 800H for Very High Temperature Nuclear Service
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Topics: Alloys, Creep, Diffusion (Physics), Fatigue, Rupture, Temperature, Diffusion bonding (Metals), Fracture (Materials), Delamination, Fracture (Process)
Proceedings Papers

A Unified Constitutive Model for Diffusion Bonded Alloy 800H To Perform Full Inelastic Analysis of Components in High Temperature Nuclear Service

Heramb P. Mahajan, Tasnim Hassan
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A026, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-62952
https://doi.org/10.1115/PVP2021-62952
View Paper titled, A Unified Constitutive Model for Diffusion Bonded Alloy 800H To Perform Full Inelastic Analysis of Components in High Temperature Nuclear Service
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Topics: Alloys, Constitutive equations, Creep, Diffusion (Physics), Fatigue, High temperature, Inelastic analysis
Proceedings Papers

A Unified Constitutive Model With Optimized Parameters for Base and Diffusion Bonded Alloy 800H

Heramb P. Mahajan, Tasnim Hassan
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A028, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21498
https://doi.org/10.1115/PVP2020-21498
View Paper titled, A Unified Constitutive Model With Optimized Parameters for Base and Diffusion Bonded Alloy 800H
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Topics: Alloys, Constitutive equations, Creep, Diffusion (Physics), Fatigue
Proceedings Papers

Allowable Stress Development of Diffusion Bonded Alloy 800H for Section III

Heramb P. Mahajan, Ian Jentz, Tasnim Hassan
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A029, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21499
https://doi.org/10.1115/PVP2020-21499
View Paper titled, Allowable Stress Development of Diffusion Bonded Alloy 800H for Section III
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Topics: Alloys, Creep, Diffusion (Physics), Diffusion bonding (Metals), Stress, Design, Mechanical properties, ASME Boiler and Pressure Vessel Code, Base metals, Databases
Proceedings Papers

Assessment of Compact Heat Exchanger Design Following Elastic Perfectly Plastic Methodology

Avinash Shaw, Heramb P. Mahajan, Tasnim Hassan
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A030, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21500
https://doi.org/10.1115/PVP2020-21500
View Paper titled, Assessment of Compact Heat Exchanger Design Following Elastic Perfectly Plastic Methodology
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Topics: Creep, Design, Fatigue, Heat exchangers, Stress, ASME Standards, Bonding, Construction, Damage, Diffusion (Physics)
Proceedings Papers

Mechanical and Microstructural Characterization of Diffusion Bonded 800H

Heramb P. Mahajan, Mohamed Elbakhshwan, Bruce C. Beihoff, Tasnim Hassan
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A031, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21502
https://doi.org/10.1115/PVP2020-21502
View Paper titled, Mechanical and Microstructural Characterization of Diffusion Bonded 800H
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Topics: Creep, Diffusion (Physics), Diffusion bonding (Metals), Temperature, Fatigue, Mechanical properties, Plates (structures), Base metals, Joining, Alloys
Proceedings Papers

Assessment of Compact Heat Exchanger Design According to the Simplified ASME Analysis Methodologies

Avinash Shaw, Ian W. Jentz, Heramb P. Mahajan, Tasnim Hassan
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A033, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21547
https://doi.org/10.1115/PVP2020-21547
View Paper titled, Assessment of Compact Heat Exchanger Design According to the Simplified ASME Analysis Methodologies
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Topics: Design, Elastic analysis, Heat exchangers, Inelastic analysis, Thermomechanics, Stress, Cycles, Failure, Failure mechanisms, High temperature
Proceedings Papers

Pathway to Evaluate Printed Circuit Heat Exchanger Based on Simplified Elastic-Perfectly Plastic Analysis Methodology for High Temperature Nuclear Service

Urmi Devi, Machel Morrison, Tasnim Hassan
Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A088, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93468
https://doi.org/10.1115/PVP2019-93468
View Paper titled, Pathway to Evaluate Printed Circuit Heat Exchanger Based on Simplified Elastic-Perfectly Plastic Analysis Methodology for High Temperature Nuclear Service
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Topics: ASME Standards, Circuits, Heat exchangers, High temperature
Proceedings Papers

Finite Element Analysis of Printed Circuit Heat Exchanger Core for Creep and Creep-Fatigue Responses

Heramb P. Mahajan, Tasnim Hassan
Proc. ASME. PVP2019, Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD), V005T09A007, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93416
https://doi.org/10.1115/PVP2019-93416
View Paper titled, Finite Element Analysis of Printed Circuit Heat Exchanger Core for Creep and Creep-Fatigue Responses
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Topics: Circuits, Creep, Fatigue, Finite element analysis, Heat exchangers
Proceedings Papers

Damage Evaluation of Grade 91 Thick Cylinder Under Variable Thermal Cyclic Loading Using Continuum Damage Coupled Viscoplastic Models

Nazrul Islam, Tasnim Hassan
Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A037, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93634
https://doi.org/10.1115/PVP2019-93634
View Paper titled, Damage Evaluation of Grade 91 Thick Cylinder Under Variable Thermal Cyclic Loading Using Continuum Damage Coupled Viscoplastic Models
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Topics: Constitutive equations, Cylinders, Damage, Fatigue
Proceedings Papers

Finite Element Analysis of Printed Circuit Heat Exchanger Core for High Temperature Creep and Burst Responses

Heramb P. Mahajan, Urmi Devi, Tasnim Hassan
Proc. ASME. PVP2018, Volume 3B: Design and Analysis, V03BT03A053, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84748
https://doi.org/10.1115/PVP2018-84748
View Paper titled, Finite Element Analysis of Printed Circuit Heat Exchanger Core for High Temperature Creep and Burst Responses
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Topics: Circuits, Finite element analysis, Heat exchangers, High temperature creep, Creep, ASME Standards, Failure, Pressure, Shapes, Very high temperature reactors
Proceedings Papers

Uniaxial Fatigue, Creep and Ratcheting Response Simulations of Alloy 617 Using Damage Coupled Viscoplastic Model

Nazrul Islam, Tasnim Hassan
Proc. ASME. PVP2018, Volume 6A: Materials and Fabrication, V06AT06A057, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84756
https://doi.org/10.1115/PVP2018-84756
View Paper titled, Uniaxial Fatigue, Creep and Ratcheting Response Simulations of Alloy 617 Using Damage Coupled Viscoplastic Model
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Topics: Alloys, Creep, Damage, Engineering simulation, Fatigue, Simulation, Modeling, Stress, Constitutive equations, Relaxation (Physics)
Proceedings Papers

Out-of-Phase and In-Phase Thermo-Mechanical Fatigue Response Simulations of Haynes 230

Raasheduddin Ahmed, Paul R. Barrett, Tasnim Hassan
Proc. ASME. ETAM2014, ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, 111-115, March 25–27, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ETAM2014-1014
https://doi.org/10.1115/ETAM2014-1014
View Paper titled, Out-of-Phase and In-Phase Thermo-Mechanical Fatigue Response Simulations of Haynes 230
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Topics: Engineering simulation, Fatigue, Simulation, Thermomechanics, Stress, Temperature, Cycles, Gas turbines, High temperature, Combustion chambers
Proceedings Papers

Constitutive Modeling of Haynes 230 for High Temperature Fatigue-Creep Interactions

Paul R. Barrett, Raasheduddin Ahmed, Tasnim Hassan
Proc. ASME. ETAM2014, ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, 248-256, March 25–27, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ETAM2014-1033
https://doi.org/10.1115/ETAM2014-1033
View Paper titled, Constitutive Modeling of Haynes 230 for High Temperature Fatigue-Creep Interactions
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Topics: Creep, Fatigue, High temperature, Modeling, Low cycle fatigue, Stress, Advanced materials, Aircraft, Constitutive equations, Gas turbines
Proceedings Papers

High Temperature Constitutive Model Development for Alloy 617

Shahriar Quayyum, Patrick Graham Pritchard, Tasnim Hassan
Proc. ASME. ETAM2014, ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, 221-231, March 25–27, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ETAM2014-1031
https://doi.org/10.1115/ETAM2014-1031
View Paper titled, High Temperature Constitutive Model Development for Alloy 617
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Topics: Alloys, Constitutive equations, High temperature, Creep, Design, Temperature, Fatigue, Cycles, Failure mechanisms, Hardening