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Proceedings Papers

Vibration Loosening Performance of Additively-Manufactured Bolted Joints

Marco Gerini-Romagnoli, Massimiliano De Agostinis, Sayed A. Nassar, Khushboo Tedlapu
Proc. ASME. IMECE2023, Volume 3: Advanced Manufacturing, V003T03A037, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-116967
https://doi.org/10.1115/IMECE2023-116967
View Paper titled, Vibration Loosening Performance of Additively-Manufactured Bolted Joints
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Topics: Additive manufacturing, Bolted joints, Friction, Vibration
Proceedings Papers

Effect of Autoclave Cure Temperature, Pressure, and Time on the Glass Transition Temperature and the Degree of Cure of Epoxy Film Adhesive Joints

Sayed A. Nassar, Shraddha Jagatap, Nitesh Hirulkar
Proc. ASME. IMECE2022, Volume 2A: Advanced Manufacturing, V02AT02A031, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-94434
https://doi.org/10.1115/IMECE2022-94434
View Paper titled, Effect of Autoclave Cure Temperature, Pressure, and Time on the Glass Transition Temperature and the Degree of Cure of Epoxy Film Adhesive Joints
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Topics: Adhesive joints, Epoxy adhesives, Epoxy resins, Glass transition, Pressure, Temperature, Adhesives, Aluminum, Bond strength, Bonding
Proceedings Papers

Effect of Using 3D Printed Parts on the Torque-Tension Relationship of Threaded Joints

Francesco Robusto, Sayed A. Nassar, Joon Ha Lee, Marco Gerini-Romagnoli, Massimiliano De Agostinis
Proc. ASME. IMECE2022, Volume 2A: Advanced Manufacturing, V02AT02A034, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-95614
https://doi.org/10.1115/IMECE2022-95614
View Paper titled, Effect of Using 3D Printed Parts on the Torque-Tension Relationship of Threaded Joints
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Topics: Additive manufacturing, Tension, Torque, Bearings, Aluminum, Bolted joints, Computers, Damage, Fasteners, Flanges
Proceedings Papers

2-D Analytical Model of Heat and Moisture Diffusion in Bonded Single Lap Joints

Marco Gerini-Romagnoli, Sayed A. Nassar
Proc. ASME. IMECE2022, Volume 2A: Advanced Manufacturing, V02AT02A033, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-95201
https://doi.org/10.1115/IMECE2022-95201
View Paper titled, 2-D Analytical Model of Heat and Moisture Diffusion in Bonded Single Lap Joints
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Topics: Diffusion (Physics), Heat, Adhesives, Shear stress, Temperature, Finite element analysis, Partial differential equations, Spacetime, Stress, Stress concentration
Proceedings Papers

Effect of Salt Spray Cyclic Corrosion on the Mechanical and Reversibility Performance of Mixed Material Joints With Modified Adhesive

Matthew Burczyk, Sayed A. Nassar
Proc. ASME. IMECE2022, Volume 2A: Advanced Manufacturing, V02AT02A032, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-94447
https://doi.org/10.1115/IMECE2022-94447
View Paper titled, Effect of Salt Spray Cyclic Corrosion on the Mechanical and Reversibility Performance of Mixed Material Joints With Modified Adhesive
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Topics: Adhesives, Corrosion, Sprays, Particulate matter, Aluminum, Carbon, Cycles, Epoxy adhesives, Epoxy resins, Fibers
Journal Articles

Novel Modeling of Heat and Moisture Diffusion in Adhesive Joints

Marco Gerini-Romagnoli, Sayed A. Nassar
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. October 2022, 144(4): 041004.
Paper No: MATS-22-1014
https://doi.org/10.1115/1.4054828
Published Online: July 18, 2022
View Article titled, Novel Modeling of Heat and Moisture Diffusion in Adhesive Joints
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Topics: Adhesives, Diffusion (Physics), Heat, Shear stress, Stress
Proceedings Papers

A Novel Mean Stress-Independent Fatigue Model for Bonded Joints With Ductile Adhesives

Marco Gerini-Romagnoli, Sayed A. Nassar
Proc. ASME. IMECE2021, Volume 3: Advanced Materials: Design, Processing, Characterization, and Applications, V003T03A025, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-70176
https://doi.org/10.1115/IMECE2021-70176
View Paper titled, A Novel Mean Stress-Independent Fatigue Model for Bonded Joints With Ductile Adhesives
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Topics: Adhesives, Fatigue, Stress, Displacement, Fatigue testing, Alloys, Aluminum, Creep, Durability, Fatigue failure
Proceedings Papers

Effect of Cyclic Corrosion and Joining Method on the Strength of Multimaterial Double Lap Joints

Marco Gerini Romagnoli, Chao Yang, Sayed A. Nassar
Proc. ASME. IMECE2021, Volume 3: Advanced Materials: Design, Processing, Characterization, and Applications, V003T03A041, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-71154
https://doi.org/10.1115/IMECE2021-71154
View Paper titled, Effect of Cyclic Corrosion and Joining Method on the Strength of Multimaterial Double Lap Joints
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Topics: Corrosion, Joining, Bonding, Adhesives, Aluminum, Carbon, Cycles, Epoxy adhesives, Epoxy resins, Fibers
Proceedings Papers

Load Distributions in Bolted Single Lap Joints Under Non-Central Tensile Shear Loading

Chaiwat Sinthusiri, Sayed A. Nassar
Proc. ASME. IMECE2020, Volume 2A: Advanced Manufacturing, V02AT02A005, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-24652
https://doi.org/10.1115/IMECE2020-24652
View Paper titled, Load Distributions in Bolted Single Lap Joints Under Non-Central Tensile Shear Loading
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Topics: Shear (Mechanics), Stress
Journal Articles

Formulation of Bearing Friction Torque in Threaded Joints With Nonflat Contact

Marco Gerini Romagnoli, Sayed A. Nassar, Joon Ha Lee
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2020, 142(3): 031302.
Paper No: PVT-18-1160
https://doi.org/10.1115/1.4046054
Published Online: March 18, 2020
View Article titled, Formulation of Bearing Friction Torque in Threaded Joints With Nonflat Contact
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Topics: Bearings, Friction, Pressure, Torque
Proceedings Papers

Novel Modeling of Mean Stress Effect on the High-Cycle Fatigue Performance of Preloaded Threaded Fasteners

Sayed A. Nassar, Tianwu Li
Proc. ASME. PVP2019, Volume 2: Computer Technology and Bolted Joints, V002T02A038, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93915
https://doi.org/10.1115/PVP2019-93915
View Paper titled, Novel Modeling of Mean Stress Effect on the High-Cycle Fatigue Performance of Preloaded Threaded Fasteners
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Topics: Fasteners, High cycle fatigue, Modeling, Stress, ASTM standards, Failure mechanisms, Fatigue
Proceedings Papers

Effect of Autoclave Cure Time and Surface Preparation on Film Adhesive Bond in Lightweight Material Joints

Isotta Morfini, Luca Goglio, Giovanni Belingardi, Sayed A. Nassar
Proc. ASME. PVP2018, Volume 2: Computer Technology and Bolted Joints, V002T02A021, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84009
https://doi.org/10.1115/PVP2018-84009
View Paper titled, Effect of Autoclave Cure Time and Surface Preparation on Film Adhesive Bond in Lightweight Material Joints
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Topics: Adhesives, Surface preparation, Aluminum, Equipment performance, Failure mechanisms, Bonding, Cooling, Fatigue life, Heating, Magnesium (Metal)
Proceedings Papers

Fatigue Performance of Preloaded Ultra High Strength Threaded Fasteners

Sayed A. Nassar, Tianwu Li
Proc. ASME. PVP2018, Volume 2: Computer Technology and Bolted Joints, V002T02A026, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84254
https://doi.org/10.1115/PVP2018-84254
View Paper titled, Fatigue Performance of Preloaded Ultra High Strength Threaded Fasteners
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Topics: Fasteners, Fatigue, Stress, High cycle fatigue, ASTM standards, Fatigue strength, Tensile strength
Proceedings Papers

Bearing Friction Torque in Threaded Fasteners With Non-Flat Underhead Contact

Sayed A. Nassar, Marco Gerini Romagnoli, Joon Ha Lee
Proc. ASME. PVP2018, Volume 2: Computer Technology and Bolted Joints, V002T02A022, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84015
https://doi.org/10.1115/PVP2018-84015
View Paper titled, Bearing Friction Torque in Threaded Fasteners With Non-Flat Underhead Contact
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Topics: Bearings, Fasteners, Friction, Torque, Pressure, Tension, Testing
Proceedings Papers

Effect of Autoclave Process Variables on Film Adhesive Bond With Polycarbonate Adherends

Shraddha Jagatap, Sayed A. Nassar
Proc. ASME. PVP2018, Volume 2: Computer Technology and Bolted Joints, V002T02A032, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84917
https://doi.org/10.1115/PVP2018-84917
View Paper titled, Effect of Autoclave Process Variables on Film Adhesive Bond With Polycarbonate Adherends
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Topics: Adhesives, Bond strength, Pressure, Temperature, Failure mechanisms, Hardening (Curing), Shear (Mechanics), Stress
Journal Articles

Principal Stress-Based Equation for Multi-Axial Fatigue Analysis of Preloaded Threaded Fasteners

Amir Kazemi, Sayed A. Nassar
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. April 2018, 140(2): 021405.
Paper No: PVT-17-1160
https://doi.org/10.1115/1.4039124
Published Online: February 22, 2018
View Article titled, Principal Stress-Based Equation for Multi-Axial Fatigue Analysis of Preloaded Threaded Fasteners
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Topics: Fatigue, Stress, Fasteners, Fatigue life, Shear (Mechanics)
Proceedings Papers

Modeling of Moisture Diffusion Effect on Peel and Sheer Stresses in Adhesively Bonded Single Lap Joints Under Shear-Tensile Loading

Emad Mazhari, Sayed A. Nassar
Proc. ASME. IMECE2017, Volume 2: Advanced Manufacturing, V002T02A080, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-70127
https://doi.org/10.1115/IMECE2017-70127
View Paper titled, Modeling of Moisture Diffusion Effect on Peel and Sheer Stresses in Adhesively Bonded Single Lap Joints Under Shear-Tensile Loading
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Topics: Diffusion (Physics), Modeling, Shear (Mechanics), Stress, Adhesives, Materials properties
Proceedings Papers

Multi-Axial Fatigue of Sheet Metal Joints Under Clamp Load and Cyclic Bending

Andrea Piccatto, Giovanni Belingardi, Zhijun Wu, Sayed A. Nassar
Proc. ASME. IMECE2017, Volume 2: Advanced Manufacturing, V002T02A092, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-72691
https://doi.org/10.1115/IMECE2017-72691
View Paper titled, Multi-Axial Fatigue of Sheet Metal Joints Under Clamp Load and Cyclic Bending
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Topics: Clamps (Tools), Fatigue, Sheet metal, Stress, Bolted joints, Bearings, Bending (Stress), Delays, Elongation, Fatigue life
Proceedings Papers

Effect of Autoclave Heating and Cooling Rates on Adhesively Bonded Lightweight Material Joints

Sayed A. Nassar, Marcello Tardito, Giovanni Belingardi
Proc. ASME. IMECE2017, Volume 2: Advanced Manufacturing, V002T02A093, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-72692
https://doi.org/10.1115/IMECE2017-72692
View Paper titled, Effect of Autoclave Heating and Cooling Rates on Adhesively Bonded Lightweight Material Joints
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Topics: Heating and cooling, Adhesives, Aluminum, Bonding, Failure mechanisms, Heat, Heating, Magnesium (Metal), Shear (Mechanics), Stress
Journal Articles

A Coupled Peel and Shear Stress-Diffusion Model for Adhesively Bonded Single Lap Joints

Emad Mazhari, Sayed A. Nassar
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. September 2017, 139(9): 091007.
Paper No: MANU-16-1662
https://doi.org/10.1115/1.4036786
Published Online: July 14, 2017
View Article titled, A Coupled Peel and Shear Stress-Diffusion Model for Adhesively Bonded Single Lap Joints
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Topics: Diffusion (Physics), Shear (Mechanics), Stress