IRES Publications

Journal Papers:

2021:

Chance Barrett, Zachary Stein, Johnathan Hernandez, Ravisankar Naraparaju, Uwe Schulz, Laurene Tetard, and Seetha Raghavan, "Detrimental effects of sand ingression in jet engine ceramic coatings captured with Raman-based 3D rendering", Journal of the European Ceramic Society, 41(2), 1664-1671, 2021.

Cite DOI

2020:

Zachary Stein, Peter Kenesei, Jun-Sang Park, Jonathan Almer, Ravisankar Naraparaju, Uwe Schulz, and Seetha Raghavan, "High-energy X-ray phase analysis of CMAS-infiltrated 7YSZ thermal barrier coatings: Effect of time and temperature", Journal of Materials Research, 35(17), 2300-2310, 2020.

Cite DOI

Lin Rossmann, Brooke Sarley, Johnathan Hernandez, Peter Kenesei, Alain Köster, Janine Wischek, Jonathan Almer, Vincent Maurel, Marion Bartsch, and Seetha Raghavan. "Method for conducting in situ high-temperature digital image correlation with simultaneous synchrotron measurements under thermomechanical conditions."Review of Scientific Instruments, 91(3), 033705, 2020.

Cite DOI

2019:

Lin Rossmann, Matthew Northam, Brooke Sarley, Liudmila Chernova, Vaishak Viswanathan, Bryan Harder, and Seetha Raghavan. "Investigation of TGO stress in thermally cycled plasma-spray physical vapor deposition and electron-beam physical vapor deposition thermal barrier coatings via photoluminescence spectroscopy."Surface and Coatings Technology, 125047, 2019.

Cite DOI

2018:

Albert Manero II, Kevin Knipe, Janine Wischek, Carla Meid, John Okasinski, Jonathan Almer, Anette M. Karlsson, Marion Bartsch, and Seetha Raghavan. "Capturing the Competing Influence of Thermal and Mechanical Loads on the Strain of Turbine Blade Coatings via High Energy X-Rays."Coatings, 320, Vol. 8, issue 9, 2018.

Cite DOI

2016:

Albert Manero II, Alex Selimov, Quentin Foullard, Kevin Knipe, Janine Wischek, Carla Meid, Anette M, Karlsson, Marion Bartsch, and Seetha Raghavan. "Piezospectroscopic evaluation and damage identification for thermal barrier coatings subjected to simulated engine environments."Surface and Coatings Technology, 323, 30-38, 2016.

Cite DOI

2015:

Kevin Knipe, Albert Manero II, Sanna F. Siddiqui, Carla Meid, Janine Wischek, John Okasinski, Johnathan Almer, Anette M. Karlsson, Marion Bartsch, Seetha Raghavan, "Inside the Engine Environment--Synchrotrons Reveal Secrets of High-Temperature Ceramic Coatings. (Cover Story)," American Ceramic Society Bulletin, 94(1), 22-27, 2015.

Cite

Albert C. Manero II, Stephen Sofronsky, Kevin Knipe, John Okasinski, Jonathan Almer, Janine Wischek, Carla Meid, Anette Karlsson, Seetha Raghavan, Marion Bartsch, "Monitoring local strain in a thermal barrier coating system under thermal mechanical gas turbine operating conditions", The Journal of The Minerals, Metals & Materials Society (TMS), 1-12, 2015.

Cite DOI

Kevin Knipe, Albert C. Manero, II, Stephen Sofronsky, John Okasinski, Jonathan Almer, Janine Wischek, Carla Meid, Anette Karlsson, Marion Bartsch, Seetha Raghavan, "Synchrotron X-Ray Diffraction Measurements Mapping Internal Strains of Thermal Barrier Coatings During Thermal Gradient Mechanical Fatigue Loading", Journal of Engineering for Gas Turbines and Power, 137(8), 082506, 2015.

Cite DOI

2014:

Kevin Knipe, Alberto Manero II, Stephen Sofronsky, John Okasinski, Jonathan Almer, Janine Wischek, Carla Meid, Anette Karlsson, Marion Bartsch, Seetha Raghavan, "Synchrotron XRD Measurements Mapping Internal Strains of Thermal Barrier Coatings During Thermal Gradient Mechanical Fatigue Loading," ASME Turbo Expo: Power for Land, Sea, and Air, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, 2014.

Cite DOI

Kevin Knipe, Albert Manero, Sanna F. Siddiqui, Carla Meid, Janine Wischek, John Okasinski, Jonathan Almer, Anette M. Karlsson, Marion Bartsch, and Seetha Raghavan, "Strain response of thermal barrier coatings captured under extreme engine environments through synchrotron X-ray diffraction," Nature Communications, 5, July 31, 2014.

Cite

2013:

Sanna F. Siddiqui, Kevin Knipe, Albert Manero, Carla Meid, Janine Wischek, John Okasinski, Jonathan Almer, Anette Karlsson, Marion Bartsch, and Seetha Raghavan, “Synchrotron X-Ray Measurement Techniques for Thermal Barrier Coated Cylindrical Samples under Thermal Gradients”, Review of Scientific Instruments, 84, 083904, 2013.

Cite DOI

Conference Papers:

2020:

Zachary Stein, Ravisankar Naraparaju, Uwe Schulz, Peter Kenesei, Jun-Sang Park, Jonathan Almer, Seetha Raghavan, "Synchrotron X-Ray Diffraction Study of Phase Transformation in CMAS Ingressed EB-PVD Thermal Barrier Coatings," AIAA Scitech Forum, Orlando, FL, January 6-10, 2020.

Cite DOI

2018:

Estefania Bohorquez, Brooke Sarley, Johnathan Hernandez, Ryan Hoover, Laurene Tetard, Ravisankar Naraparaju, Uwe Schulz, Seetha Raghavan, "Investigation of the Effects of CMAS-infiltration in EB-PVD 7% Yttria-Stabilized Zirconia via Raman Spectroscopy," 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Kissimmee, Florida, 8–12 January 2018.

DOI

Lin Rossmann, Brooke Sarley, Johnathan Hernandez, Peter Kenesei, Jonathan Almer, Janine Wischek, Marion Bartsch, Alain Köster, Vincent Maurel, Seetha Raghavan, "Method for Conducting In Situ High Temperature DIC with Simultaneous Synchrotron Measurements under Thermomechanical Load," AIAA Science and Technology Forum and Exposition, Orlando, FL, 8-12 January 2018.

DOI

2017:

Brooke Sarley, Albert C. Manero, Jose Cotelo, Janine Wischek, John Okasinski, Peter Kenesei, Johnathan Almer, Marion Bartsch, Seetha Raghavan., "Real-time phase evolution of Selective Laser Melted (SLM) Inconel 718 with temperature through synchrotron X-rays," 58th AIAA/ASCE/AHS/ASC Structural Dynamics, and Materials Conference, AIAA SciTech Forum, Grapevine, Texas, 9-13 January 2017.

Cite DOI

2016:

Albert Manero II, Stephen Sofronsky, Katia Artzt, Stefan Hackemann, Janine Wischek, John Okasinski, Peter Kenesei, Jonathan Almer, Marion Bartsch, Seetha Raghavan*, “Interpreting High Temperature Deformation Behavior of a Ceramic Matrix Composite via High Energy X-rays and Numerical Simulation,” SciTech 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, San Diego, CA, 4-8 January 2016.

Cite DOI

2015:

Albert C. Manero, Kevin Knipe, Carla Meid, Janine Wischek, Claudine Lacdao, Matthew Smith, John Okasinski, Jonathan Almer, Marion Bartsch, Anette Karlsson, Seetha Raghavan, "Comparison of Thermal Barrier Coating Stresses via High Energy X-Rays and Piezospectroscopy," SciTech 53rd AIAA Aerospace Sciences Meeting, Kissimmee, FL, 5-9 January 2015.

DOI

2014:

Kevin Knipe, Albert Manero, Sanna F. Siddiqui, Stephen Sofronsky, Pascal Fouquet, Carla Meid, Janine Wischek, Marion Bartsch, John Okasinski, Jonathan Almer, Anette Karlsson and Seetha Raghavan “Synchrotron XRD Measurements of Thermal Barrier Coatings Subjected to Loads Representing Operational Conditions of Rotating Gas Turbine Blades,” AIAA SciTech 52nd Aerospace Sciences Meeting, 13-17 January 2014, National Harbor, Maryland.

DOI

Patents:

2019:

Ravisankar Naraparaju, Uwe Schulz, Seetha Raghavan, Estefania Bohorquez, “Non-destructive cmas-infiltration characterization of thermal barrier coatings,”US Patent Pub. No. US20190293567A1. Granted 09/26/2019.

Cite