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Journal Articles

Mechanical Properties of Doped Solder SAC-Q for High Strain Rate Testing at Extreme Surrounding Temperatures for 6 Months of Isothermal Aging

Pradeep Lall, Vishal Mehta, Jeff Suhling, Ken Blecker
Journal: Journal of Electronic Packaging
Publisher: ASME
Article Type: Research-Article
J. Electron. Packag. September 2024, 146(3): 031006.
Paper No: EP-22-1025
https://doi.org/10.1115/1.4064521
Published Online: March 11, 2024
View Article titled, Mechanical Properties of Doped Solder SAC-Q for High Strain Rate Testing at Extreme Surrounding Temperatures for 6 Months of Isothermal Aging
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Topics: Elastic moduli, Mechanical properties, Solders, Stress, Stress-strain curves, Temperature, Tensile strength, Testing, Viscoplasticity, Finite element analysis
Proceedings Papers

Assessment of Effect of Operating Temperature on SAC-R Solders at High Strain Rates After Prolonged Storage

Pradeep Lall, Mrinmoy Saha, Jeff Suhling, David Locker
Proc. ASME. InterPACK2023, ASME 2023 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T08A011, October 24–26, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2023-112036
https://doi.org/10.1115/IPACK2023-112036
View Paper titled, Assessment of Effect of Operating Temperature on SAC-R Solders at High Strain Rates After Prolonged Storage
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Topics: Operating temperature, Solders, Storage, Alloys, Constitutive equations, Shock (Mechanics), Temperature, Aerospace industry, Automobiles, Climate
Proceedings Papers

Study of Sustained High-Temperature on the Reliability of Lead-Free Solder Joint Assemblies Under Vibration

Pradeep Lall, Vishal Mehta, Jeff Suhling, David Locker
Proc. ASME. InterPACK2023, ASME 2023 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T08A009, October 24–26, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2023-111984
https://doi.org/10.1115/IPACK2023-111984
View Paper titled, Study of Sustained High-Temperature on the Reliability of Lead-Free Solder Joint Assemblies Under Vibration
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Topics: Finite element analysis, High temperature, Lead-free solders, Reliability, Solders, Temperature, Testing, Vibration, Viscoplasticity
Proceedings Papers

High-G Level Shock Damage-Accrual in Doped/Undoped SnAgCu Solders Under 100°C Sustained Operation Up to 1-Year

Pradeep Lall, Vishal Mehta, Jeff Suhling, Ken Blecker
Proc. ASME. InterPACK2023, ASME 2023 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T08A008, October 24–26, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2023-111981
https://doi.org/10.1115/IPACK2023-111981
View Paper titled, High-G Level Shock Damage-Accrual in Doped/Undoped SnAgCu Solders Under 100°C Sustained Operation Up to 1-Year
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Topics: Damage, Shock (Mechanics), Solders, Temperature, Viscoplasticity
Journal Articles

Leadfree SnAgCu Solder Materials Characterization at High Strain Rates at Low Test Temperatures and Drop and Shock Simulation Using Input-G Method

Pradeep Lall, Vikas Yadav, Jeff Suhling, David Locker
Journal: Journal of Electronic Packaging
Publisher: ASME
Article Type: Research-Article
J. Electron. Packag. June 2024, 146(2): 021004.
Paper No: EP-22-1026
https://doi.org/10.1115/1.4062868
Published Online: November 10, 2023
View Article titled, Leadfree SnAgCu Solder Materials Characterization at High Strain Rates at Low Test Temperatures and Drop and Shock Simulation Using Input-G Method
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Topics: Solders, Temperature, Shock (Mechanics), Alloys
Proceedings Papers

Effect of Property Evolution of Doped and Undoped SnAgCu Solder Alloys Under Shock and Vibration

Pradeep Lall, Vikas Yadav, Jeff Suhling, David Locker
Proc. ASME. InterPACK2022, ASME 2022 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T04A003, October 25–27, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2022-97452
https://doi.org/10.1115/IPACK2022-97452
View Paper titled, Effect of Property Evolution of Doped and Undoped SnAgCu Solder Alloys Under Shock and Vibration
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Topics: Alloys, Shock (Mechanics), Solders, Vibration, Reliability, Aerospace industry, Climate, Defense industry, Elastic moduli, Electronics
Proceedings Papers

High Strain Rate Properties and Evolution of Plastic-Work for Doped Solder SAC-Q for Isothermal Aging Up to 240-Days at 100°C

Pradeep Lall, Vishal Mehta, Jeff Suhling, Ken Blecker
Proc. ASME. InterPACK2022, ASME 2022 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T10A010, October 25–27, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2022-97438
https://doi.org/10.1115/IPACK2022-97438
View Paper titled, High Strain Rate Properties and Evolution of Plastic-Work for Doped Solder SAC-Q for Isothermal Aging Up to 240-Days at 100°C
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Topics: Shock (Mechanics), Solders, Temperature, Operating temperature, Alloys, High temperature, Stress, Stress-strain curves, Testing, Aerospace industry
Proceedings Papers

Characterization of Fatigue Crack Growth of Epoxy Molding Compounds Under High-Temperature Long-Term Aging

Pradeep Lall, Yunli Zhang, Jeff Suhling, Jaimal Williamson, Pat Thompson
Proc. ASME. InterPACK2022, ASME 2022 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T10A014, October 25–27, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2022-97453
https://doi.org/10.1115/IPACK2022-97453
View Paper titled, Characterization of Fatigue Crack Growth of Epoxy Molding Compounds Under High-Temperature Long-Term Aging
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Topics: Epoxy adhesives, Epoxy resins, Fatigue, Fatigue cracks, High temperature, Molding, Reliability
Proceedings Papers

Effect of Aging on High Strain Rate Mechanical Properties of SAC+Bi Solders After Exposure to Isothermal Aging of 50°C Up To 120 Days

Pradeep Lall, Mrinmoy Saha, Jeff Suhling, Ken Blecker
Proc. ASME. InterPACK2022, ASME 2022 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T10A013, October 25–27, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2022-97449
https://doi.org/10.1115/IPACK2022-97449
View Paper titled, Effect of Aging on High Strain Rate Mechanical Properties of SAC+Bi Solders After Exposure to Isothermal Aging of 50°C Up To 120 Days
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Topics: Mechanical properties, Solders, Temperature, Alloys, Storage, Aerospace industry, Automotive industry, Constitutive equations, Finite element analysis, Low temperature materials
Journal Articles

Evolution of Anand Parameters for Thermally Aged Sn-Ag-Cu Lead-Free Alloys at Low Operating Temperature

Pradeep Lall, Vikas Yadav, Jeff Suhling, David Locker
Journal: Journal of Electronic Packaging
Publisher: ASME
Article Type: Research-Article
J. Electron. Packag. June 2022, 144(2): 021116.
Paper No: EP-21-1062
https://doi.org/10.1115/1.4053764
Published Online: March 11, 2022
View Article titled, Evolution of Anand Parameters for Thermally Aged Sn-Ag-Cu Lead-Free Alloys at Low Operating Temperature
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Topics: Solders, Stress-strain curves, Temperature, Alloys, Operating temperature, Tensile strength, Materials properties
Journal Articles

Microstructural Evolution of Viscoelastic Properties of Underfills Under Sustained High Temperature Operation

Pradeep Lall, Madhu Kasturi, Haotian Wu, Jeff Suhling, Edward Davis
Journal: Journal of Electronic Packaging
Publisher: ASME
Article Type: Research-Article
J. Electron. Packag. June 2022, 144(2): 021113.
Paper No: EP-21-1059
https://doi.org/10.1115/1.4052715
Published Online: January 4, 2022
View Article titled, Microstructural Evolution of Viscoelastic Properties of Underfills Under Sustained High Temperature Operation
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Topics: Flip-chip, Glass transition, High temperature, Mechanical properties, Oxidation, Solders, Storage, Temperature, Viscoelasticity, Optical microscopes
Proceedings Papers

Evolution of Prony Parameters for Underfills Subjected to High Temperature Long Term Aging

Pradeep Lall, Yunli Zhang, Haotian Wu, Jeff Suhling, Edward Davis
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A024, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-74076
https://doi.org/10.1115/IPACK2021-74076
View Paper titled, Evolution of Prony Parameters for Underfills Subjected to High Temperature Long Term Aging
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Topics: High temperature, Reliability
Proceedings Papers

Characterization of Linear Viscoelasticity Evolution of Epoxy Molding Compound Subjected to High Temperature Long Term Aging

Pradeep Lall, Yunli Zhang, Haotian Wu, Jeff Suhling, Edward Davis, Jaimal Williamson
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A023, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-74075
https://doi.org/10.1115/IPACK2021-74075
View Paper titled, Characterization of Linear Viscoelasticity Evolution of Epoxy Molding Compound Subjected to High Temperature Long Term Aging
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Topics: Epoxy adhesives, Epoxy resins, High temperature, Molding, Viscoelasticity
Proceedings Papers

Determination of High and Low Temperature High Strain Rate Mechanical Properties for SAC-R After Exposure to Isothermal Aging of 50°C Up To 8 Months

Pradeep Lall, Mrinmoy Saha, Jeff Suhling, Ken Blecker
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A022, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-74069
https://doi.org/10.1115/IPACK2021-74069
View Paper titled, Determination of High and Low Temperature High Strain Rate Mechanical Properties for SAC-R After Exposure to Isothermal Aging of 50°C Up To 8 Months
Open the PDF for Determination of High and Low Temperature High Strain Rate Mechanical Properties for SAC-R After Exposure to Isothermal Aging of 50°C Up To 8 Months in another window
Topics: Low temperature, Mechanical properties, Storage, Temperature, Alloys, Solders, Avionics, Climate, Design, Electronic packages
Proceedings Papers

Low Temperature Material Characterization of Lead-Free SAC Solder Alloy at High Strain Rate After Prolonged High Temperature Storage

Pradeep Lall, Vikas Yadav, Jeff Suhling, David Locker
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A021, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-74068
https://doi.org/10.1115/IPACK2021-74068
View Paper titled, Low Temperature Material Characterization of Lead-Free SAC Solder Alloy at High Strain Rate After Prolonged High Temperature Storage
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Topics: Alloys, High temperature, Low temperature materials, Solders, Storage
Proceedings Papers

Property Evolution and Reliability of Underfills Under Sustained High Temperature Storage

Pradeep Lall, Madhu Kasturi, Haotian Wu, Jeff Suhling, Edward Davis
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A017, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-74061
https://doi.org/10.1115/IPACK2021-74061
View Paper titled, Property Evolution and Reliability of Underfills Under Sustained High Temperature Storage
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Topics: High temperature, Relaxation (Physics), Reliability, Storage, Temperature, Viscoelasticity, Electronics, Glass transition, Materials properties, Mechanical properties
Proceedings Papers

Mechanical Properties of Doped Solder SAC-Q for High Strain Rate Testing at Extreme Surrounding Temperatures for 6 Months of Isothermal Aging

Pradeep Lall, Vishal Mehta, Jeff Suhling, Ken Blecker
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T07A020, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-74067
https://doi.org/10.1115/IPACK2021-74067
View Paper titled, Mechanical Properties of Doped Solder SAC-Q for High Strain Rate Testing at Extreme Surrounding Temperatures for 6 Months of Isothermal Aging
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Topics: Alloys, High temperature, Mechanical properties, Shock (Mechanics), Solders, Temperature, Testing, Vibration, Viscoplasticity
Journal Articles

High Strain Rate Mechanical Properties of SAC-Q Solder for Extreme Temperatures After Exposure to Isothermal Aging Up to 90 Days

Pradeep Lall, Vishal Mehta, Jeff Suhling, Ken Blecker
Journal: Journal of Electronic Packaging
Publisher: ASME
Article Type: Research-Article
J. Electron. Packag. June 2022, 144(2): 021108.
Paper No: EP-21-1060
https://doi.org/10.1115/1.4052073
Published Online: October 6, 2021
View Article titled, High Strain Rate Mechanical Properties of SAC-Q Solder for Extreme Temperatures After Exposure to Isothermal Aging Up to 90 Days
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Topics: Elastic moduli, Mechanical properties, Solders, Stress, Stress-strain curves, Temperature, Tensile strength, Testing, Operating temperature, High temperature
Proceedings Papers

Non-Perpendicular Orientation High-G Impact Reliability of Electronics Potted Assemblies

Pradeep Lall, Aathi Raja Ram Pandurangan, Jeff Suhling, John Deep
Proc. ASME. InterPACK2020, ASME 2020 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T01A007, October 27–29, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2020-2648
https://doi.org/10.1115/IPACK2020-2648
View Paper titled, Non-Perpendicular Orientation High-G Impact Reliability of Electronics Potted Assemblies
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Topics: Electronics, Reliability, Shock (Mechanics), Vehicles, Manufacturing, Solder joints, Aerospace industry, Ball-Grid-Array packaging, Capacitors, Ceramics
Proceedings Papers

Degradation Mechanisms of Underfills Subjected to Isothermal Long-Term Aging From 150°C to 200°C

Pradeep Lall, Yunli Zhang, Haotian Wu, Ed Davis, Jeff Suhling
Proc. ASME. InterPACK2020, ASME 2020 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T01A014, October 27–29, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2020-2677
https://doi.org/10.1115/IPACK2020-2677
View Paper titled, Degradation Mechanisms of Underfills Subjected to Isothermal Long-Term Aging From 150°C to 200°C
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Topics: Damage, Design, Elastic moduli, Electronic components, Electronic packaging, Elongation, High temperature, Mechanical properties, Mechanical testing, Operating temperature