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Journal Articles

Cracking Behavior of Environmental Barrier Coatings/Ceramic Matrix Composite System Using Acoustic Emission and Digital Image Correlation

Ragav P. Panakarajupally, Gregory N. Morscher, Jun Shi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2024, 146(12): 121018.
Paper No: GTP-24-1273
https://doi.org/10.1115/1.4066211
Published Online: September 6, 2024
View Article titled, Cracking Behavior of Environmental Barrier Coatings/Ceramic Matrix Composite System Using Acoustic Emission and Digital Image Correlation
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Topics: Acoustic emissions, Ceramic matrix composites, Coating processes, Coatings, Fracture (Materials), Fracture (Process), Stress, Inspection
Proceedings Papers

Cracking Behavior of Environmental Barrier Coatings/CMC System Using Acoustic Emission and Digital Image Correlation

Ragavendra Prasad Panakarajupally, Gregory N. Morscher, Jun Shi
Proc. ASME. GT2024, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T02A018, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129523
https://doi.org/10.1115/GT2024-129523
View Paper titled, Cracking Behavior of Environmental Barrier Coatings/CMC System Using Acoustic Emission and Digital Image Correlation
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Topics: Acoustic emissions, Ceramic matrix composites, Coatings, Fracture (Process)
Journal Articles

Mechanical Characterization of Bi-Layer Environmental Barrier Coatings Under Tension and Bending Using Acoustic Emission and Digital Image Correlation

Ragav P. Panakarajupally, Gregory N. Morscher, Jun Shi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2024, 146(2): 021008.
Paper No: GTP-23-1435
https://doi.org/10.1115/1.4063385
Published Online: October 25, 2023
View Article titled, Mechanical Characterization of Bi-Layer Environmental Barrier Coatings Under Tension and Bending Using Acoustic Emission and Digital Image Correlation
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Topics: Acoustic emissions, Ceramic matrix composites, Coatings, Fracture (Materials), Stress, Tension
Proceedings Papers

ICME Modeling of Erosion in Coated Metal Alloys and SiC-Based Ceramic Matrix Composites (CMC’s)

Amirhossein Eftekharian, Joshua Park, Gregory N. Morscher, Dade Huang, Rashid Miraj, Frank Abdi
Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T02A012, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104088
https://doi.org/10.1115/GT2023-104088
View Paper titled, ICME Modeling of Erosion in Coated Metal Alloys and SiC-Based Ceramic Matrix Composites (CMC’s)
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Topics: Alloys, Ceramic matrix composites, Coating processes, Delamination, Erosion, Fracture (Materials), Modeling
Proceedings Papers

ICME Simulation of APS Process and Damage in Ceramic Coatings

Mallikharjun Marrey, Dade Huang, Gregory N. Morscher, Rashid Miraj, Frank Abdi, Daniel Ballant, George Jefferson, Ragavendra P. Panakarjupally
Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T02A013, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104103
https://doi.org/10.1115/GT2023-104103
View Paper titled, ICME Simulation of APS Process and Damage in Ceramic Coatings
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Topics: Ceramic coatings, Damage, Plasmas (Ionized gases), Simulation, Thermal barrier coatings
Proceedings Papers

Influence of Elevated Temperature Solid Particle Erosion on Strength Degradation of Oxide/Oxide Ceramic Matrix Composites

Farhan Mirza, Ragav P. Panakarajupally, J. E. Rassi, Gregory N. Morscher, Frank Abdi, Sung Choi
Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T02A006, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102371
https://doi.org/10.1115/GT2023-102371
View Paper titled, Influence of Elevated Temperature Solid Particle Erosion on Strength Degradation of Oxide/Oxide Ceramic Matrix Composites
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Topics: Composite materials, Erosion, Oxide ceramics, Particulate matter, Temperature
Proceedings Papers

Mechanical Characterization of Bi-Layer EBC Coatings Under Tension and Bending Using Acoustic Emission and Digital Image Correlation

Ragav P. Panakarajupally, Gregory N. Morscher, Jun Shi
Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T02A007, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102609
https://doi.org/10.1115/GT2023-102609
View Paper titled, Mechanical Characterization of Bi-Layer EBC Coatings Under Tension and Bending Using Acoustic Emission and Digital Image Correlation
Open the PDF for Mechanical Characterization of Bi-Layer EBC Coatings Under Tension and Bending Using Acoustic Emission and Digital Image Correlation in another window
Topics: Acoustic emissions, Coatings, Tension
Proceedings Papers

Advancement of Electrical Resistance Towards Monitoring Crack Growth in SiC Based Composites at Elevated Temperatures

Joseph El Rassi, Gregory N. Morscher
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T02A007, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83010
https://doi.org/10.1115/GT2022-83010
View Paper titled, Advancement of Electrical Resistance Towards Monitoring Crack Growth in SiC Based Composites at Elevated Temperatures
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Topics: Composite materials, Electrical resistance, Fracture (Materials), Temperature
Proceedings Papers

ICME Modeling of Erosion in Gas-Turbine Grade CMC and HVOF Test

Frank Abdi, Amirhossein Eftekharian, Dade Huang, Sung Choi, Gregory N. Morscher, Ragavendra P. Panakarajupally
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T02A009, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83279
https://doi.org/10.1115/GT2022-83279
View Paper titled, ICME Modeling of Erosion in Gas-Turbine Grade CMC and HVOF Test
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Topics: Cavities, Ceramic matrix composites, Erosion, Gas turbines, Microcracks, Modeling, Temperature
Proceedings Papers

ICME Computational Framework for Ceramic APS Coatings

Frank Abdi, Surekha Achanta, Harsh Baid, Vasyl Harik, Reza Yaghmaie, Gregory N. Morscher, Daniel Balint, Larry Zawada, George Jefferson
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T02A011, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83469
https://doi.org/10.1115/GT2022-83469
View Paper titled, ICME Computational Framework for Ceramic APS Coatings
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Topics: Ceramics, Coatings, Damage, Furnaces, Plasmas (Ionized gases), Sprays, Thermal barrier coatings
Proceedings Papers

Residual Strength of Turbine Grade Ceramic Matrix Composites After Being Subjected to Solid Particle Erosion at Elevated Temperatures

Farhan Mirza, Ragav P. Panakarajupally, Gregory N. Morscher, Frank Abdi, Sung Choi
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T02A010, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83465
https://doi.org/10.1115/GT2022-83465
View Paper titled, Residual Strength of Turbine Grade Ceramic Matrix Composites After Being Subjected to Solid Particle Erosion at Elevated Temperatures
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Topics: Ceramic matrix composites, Erosion, Particulate matter, Temperature, Turbines
Journal Articles

Constituent and Ply-Level Understanding of Electrical Resistance in Si-Containing SiC/SiC Composites

Joseph El Rassi, Gregory N. Morscher
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111006.
Paper No: GTP-21-1242
https://doi.org/10.1115/1.4051867
Published Online: September 27, 2021
View Article titled, Constituent and Ply-Level Understanding of Electrical Resistance in Si-Containing SiC/SiC Composites
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Topics: Composite materials, Damage, Electrical resistance, Electrical resistivity, Fibers, Fracture (Materials), Ceramic matrix composites, Architecture, Circuits, Tunnels
Proceedings Papers

Constituent and Ply Level Understanding of Electrical Resistance in Si-Containing SiC/SiC Composites

Joseph El Rassi, Gregory N. Morscher
Proc. ASME. GT2021, Volume 6: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels; Microturbines, Turbochargers, and Small Turbomachines, V006T02A011, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60395
https://doi.org/10.1115/GT2021-60395
View Paper titled, Constituent and Ply Level Understanding of Electrical Resistance in Si-Containing SiC/SiC Composites
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Topics: Ceramic matrix composites, Composite materials, Electrical resistance
Proceedings Papers

Erosion Evaluation of Gas-Turbine Grade CMC’s at Room and Elevated Temperatures

Amirhossein Eftekharian, Ragav P. Panakarajupally, Gregory N. Morscher, Dade Huang, Frank Abdi, Sung Choi
Proc. ASME. GT2021, Volume 6: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels; Microturbines, Turbochargers, and Small Turbomachines, V006T02A007, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59782
https://doi.org/10.1115/GT2021-59782
View Paper titled, Erosion Evaluation of Gas-Turbine Grade CMC’s at Room and Elevated Temperatures
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Topics: Ceramic matrix composites, Erosion, Fuels, Gas turbines, Microcracks, Modeling, Oxygen, Temperature
Journal Articles

Monitoring Damage in Nonoxide Composites at High Temperatures Using Carbon-Containing CVD SiC Monofilament Fibers as Embedded Electrical Resistance Sensors

Ragav P. Panakarajupally, Joseph El Rassi, K. Manigandan, Yogesh P. Singh, Gregory N. Morscher
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2021, 143(5): 051027.
Paper No: GTP-20-1418
https://doi.org/10.1115/1.4048694
Published Online: March 15, 2021
View Article titled, Monitoring Damage in Nonoxide Composites at High Temperatures Using Carbon-Containing CVD SiC Monofilament Fibers as Embedded Electrical Resistance Sensors
Open the PDF for Monitoring Damage in Nonoxide Composites at High Temperatures Using Carbon-Containing CVD SiC Monofilament Fibers as Embedded Electrical Resistance Sensors in another window
Topics: Carbon, Composite materials, Fibers, Temperature, High temperature, Damage, Fatigue, Fracture (Materials), Chemical vapor deposition, Electrical resistance
Proceedings Papers

Monitoring Damage in Non-Oxide Composites at High Temperatures Using Carbon-Containing CVD SiC Monofilament Fibers As Embedded Electrical Resistance Sensors

Ragav P. Panakarajupally, Joseph Elrassi, K. Manigandan, Yogesh P. Singh, Gregory N. Morscher
Proc. ASME. GT2020, Volume 3: Ceramics; Coal, Biomass, Hydrogen, and Alternative Fuels, V003T02A009, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15937
https://doi.org/10.1115/GT2020-15937
View Paper titled, Monitoring Damage in Non-Oxide Composites at High Temperatures Using Carbon-Containing CVD SiC Monofilament Fibers As Embedded Electrical Resistance Sensors
Open the PDF for Monitoring Damage in Non-Oxide Composites at High Temperatures Using Carbon-Containing CVD SiC Monofilament Fibers As Embedded Electrical Resistance Sensors in another window
Topics: Carbon, Chemical vapor deposition, Composite materials, Damage, Electrical resistance, Fibers, High temperature, Sensors, Temperature, Fracture (Materials)
Proceedings Papers

Fatigue Characterization of SiC/SiC Ceramic Matrix Composites in Combustion Environment

Ragav P. Panakarajupally, Joseph Elrassi, K. Manigandan, Gregory N. Morscher
Proc. ASME. GT2020, Volume 3: Ceramics; Coal, Biomass, Hydrogen, and Alternative Fuels, V003T02A006, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15521
https://doi.org/10.1115/GT2020-15521
View Paper titled, Fatigue Characterization of SiC/SiC Ceramic Matrix Composites in Combustion Environment
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Topics: Combustion, Composite materials, Fatigue, Silicon carbide ceramics, Furnaces, Stress, Temperature, Ceramic matrix composites, Cycles, Damage
Proceedings Papers

Design Framework for Optimized Multifunctional Coatings

Nima Moazami, Frank Abdi, Gregory N. Morscher, Cody Godines, Larry Zawada, George Jefferson, Jalees Ahmed
Proc. ASME. GT2020, Volume 3: Ceramics; Coal, Biomass, Hydrogen, and Alternative Fuels, V003T02A004, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15068
https://doi.org/10.1115/GT2020-15068
View Paper titled, Design Framework for Optimized Multifunctional Coatings
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Topics: Coatings, Design, Durability, Modeling, Service life (Equipment), Thermal conductivity
Journal Articles

Fatigue Characterization of SiC/SiC Ceramic Matrix Composites in Combustion Environment

Ragav P. Panakarajupally, Joseph El Rassi, K. Manigandan, Gregory N. Morscher
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2020, 142(12): 121004.
Paper No: GTP-20-1417
https://doi.org/10.1115/1.4048460
Published Online: November 18, 2020
View Article titled, Fatigue Characterization of SiC/SiC Ceramic Matrix Composites in Combustion Environment
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Topics: Combustion, Composite materials, Fatigue, Fracture (Materials), Fracture (Process), Furnaces, Oxidation, Stress, Temperature, Fibers
Journal Articles

An Investigation of the End-Notched Flexure and End-Loaded Split Tests Applied to the Mode II Interlaminar Fracture of a SiC/SiC Ceramic Matrix Composite

Michael J. Presby, Manigandan Kannan, Gregory N. Morscher, Cody Godines, Amirhossein Eftekharian, Jalees Ahmad, Frank Abdi, Sung R. Choi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2020, 142(4): 041027.
Paper No: GTP-19-1312
https://doi.org/10.1115/1.4044490
Published Online: February 18, 2020
View Article titled, An Investigation of the End-Notched Flexure and End-Loaded Split Tests Applied to the Mode II Interlaminar Fracture of a SiC/SiC Ceramic Matrix Composite
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Topics: Bending (Stress), Fracture (Materials), Fracture toughness, Testing, Ceramic matrix composites