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Heramb P. Mahajan
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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
Article Type: Research-Article
J. Pressure Vessel Technol. June 2023, 145(3): 031302.
Paper No: PVT-21-1199
DOI: https://doi.org/10.1115/1.4057061
Published Online: March 20, 2023
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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
Paper No: PVP2022-81247
DOI: https://doi.org/10.1115/PVP2022-81247
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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
Article Type: Research-Article
J. Pressure Vessel Technol. December 2022, 144(6): 061201.
Paper No: PVT-21-1145
DOI: https://doi.org/10.1115/1.4054073
Published Online: April 1, 2022
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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
Article Type: Research-Article
J. Pressure Vessel Technol. August 2022, 144(4): 041404.
Paper No: PVT-21-1127
DOI: https://doi.org/10.1115/1.4052697
Published Online: December 6, 2021
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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
Article Type: Research Papers
J. Eng. Mater. Technol. April 2022, 144(2): 021008.
Paper No: MATS-21-1167
DOI: https://doi.org/10.1115/1.4052825
Published Online: November 23, 2021
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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
Paper No: PVP2021-62952
DOI: https://doi.org/10.1115/PVP2021-62952
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Topics: Alloys, Constitutive equations, Creep, Diffusion (Physics), Fatigue, High temperature, Inelastic analysis
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
Paper No: PVP2020-21547
DOI: https://doi.org/10.1115/PVP2020-21547
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Topics: Design, Elastic analysis, Heat exchangers, Inelastic analysis, Thermomechanics, Stress, Cycles, Failure, Failure mechanisms, High temperature
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
Paper No: PVP2020-21498
DOI: https://doi.org/10.1115/PVP2020-21498
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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
Paper No: PVP2020-21499
DOI: https://doi.org/10.1115/PVP2020-21499
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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
Paper No: PVP2020-21500
DOI: https://doi.org/10.1115/PVP2020-21500
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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
Paper No: PVP2020-21502
DOI: https://doi.org/10.1115/PVP2020-21502
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Topics: Creep, Diffusion (Physics), Diffusion bonding (Metals), Temperature, Fatigue, Mechanical properties, Plates (structures), Base metals, Joining, Alloys
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
Paper No: PVP2019-93416
DOI: https://doi.org/10.1115/PVP2019-93416
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Topics: Circuits, Creep, Fatigue, Finite element analysis, Heat exchangers
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
Paper No: PVP2018-84748
DOI: https://doi.org/10.1115/PVP2018-84748
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Topics: Circuits, Finite element analysis, Heat exchangers, High temperature creep, Creep, ASME Standards, Failure, Pressure, Shapes, Very high temperature reactors