Carter Fietek
- Program Year: 1
- Academic Institution: The Ohio State University
- Field of Study: Industrial Engineering
- Academic Advisor: Jeremy Seidt
- Practicum(s): Practicum Not Yet Completed
- Degree(s):
M.S. Mechanical Engineering, New Mexico State University, 2022; B.S. Aerospace Engineering, and B.S. Mechanical Engineering, New Mexico State University, 2021
Summary of Research
My research aims to develop a new framework for studying anisotropic material behavior under extreme loading conditions and elevated strain rates. This will involve a combination of experimental and numerical approaches to better understand the performance of specific sheet metals that are commonly used within the nuclear stockpile. Manufacturing these materials induces unique plastic anisotropy that should be understood to accurately predict deformation and fracture when subjected to multi-axial and extreme loading conditions. To traditionally calibrate anisotropic material models, full-scale testing methods that are costly and time-consuming are currently being employed. My work aims to reduce the number of experiments required by leveraging data-rich experiments that contain all the stress states encountered in the first quadrant of the plane-stress yield locus. It is proposed that the plastic anisotropy can be obtained from a single test instead of multiple traditional tests, allowing engineers to make more informed decisions on material selection and predict the performance of components in extreme environments more accurately. This same experiment also has the potential to inform damage accumulation and ductile fracture models, providing insight into crack initiation and propagation in anisotropic materials. Additionally, this experiment can be performed at various velocities to study the rate-dependence of the plastic anisotropy, a critical factor in high-rate and impact loading failures. The first aim of my research is to solve the forward problem by conducting traditional material testing and finite element analysis to establish the ground truth of the material's behavior. The second aim will explore microstructural modeling as an alternative to traditional calibration techniques. The third aim is solving the inverse problem, identifying material properties through a single data-rich experiment. If successful, it could shift how material models are identified, making simulations more accurate and efficient and ultimately improving the safety and security of our stockpile.Publications
Journal Publications- C.J. Fietek, E. Brizes, J. Milner. Evaluation of High-Vacuum Annealing and Hot Isostatic Pressing on the Microstructure and Properties of an Additively Manufactured Niobium Alloy. The Journal of Metals, (2024). https://doi.org/10.1007/s11837-023-06320-5
- Y.H. Park, C.J. Fietek, A. Love, J. Sakai. Damage Modeling in Additive Manufacturing Processes for Metals, The International Journal of Advanced Manufacturing Technology, (2024). https://doi.org/10.1007/s00170-024-13108-7
- C.J. Fietek, J.D. Seidt, H. Lim, and Y.P. Korkolis. RATE-DEPENDENT HOLE-EXPANSION EXPERIMENTS ON PLASTICALLY ANISOTROPIC SHEETS. The Journal of Metals, (2023). https://doi.org/10.1007/s11837-023-06166-x
- J. Nakai-Chapman, C.J. Fietek, A. Love, J. Sakai, and Y.H. Park. Metal Additive Manufacturing Simulation Using Sequentially Coupled Thermomechanical Analysis with Johnson-Cook Constitutive Material Model. Multiscale and Multidisciplinary Modeling, Experiments and Design. (2023). https://doi.org/10.1007/s41939-023-00247-9
- E. Corona, M. Spletzer, B.T. Lester and C.J. Fietek. Validation of material models for puncture of 7075-T651 aluminum plate. The International Journal of Solids and Structures, (2022). https://doi.org/10.1016/j.ijsolstr.2022.111893
Refereed Conference Proceedings
- C.J. Fietek, J. Sakai, A. Love and Y.H. Park, Damage Modeling in Metal Additive Manufacturing Process Simulations. Proceedings of the ASME Pressure Vessel and Piping Conference (PVP), (2023). https://doi.org/10.1115/PVP2023-106347
- J. Nakai-Chapman, C.J. Fietek, J. Sakai, and Y.H. Park. METAL ADDITIVE MANUFACTURING SIMULATION USING SEQUENTIALLY COUPLED THERMO-MECHANICAL ANALYSIS. Proceedings of the ASME Pressure Vessels and Piping Conference (PVP), (2022). https://doi.org/10.1115/PVP2022-84612
Conference Presentations
- C.J. Fietek, J.D. Seidt, H. Lim, and Y.P. Korkolis, Hole Expansion Testing of Thin Sheet Materials at Various Strain Rates for Advanced Constitutive Model Calibration. Materials Science & Technology Technical Meeting and Exhibition, (Columbus, OH: October 2023).
- C.J. Fietek, Characterizing Microstructure and Properties of a Niobium Alloy Subject to Various Heat-Treatments. GEM Annual Board Meeting & Conference, (Philadelphia, PA: September 2023). https://ntrs.nasa.gov/citations/20230011948
- E. Corona, C.J. Fietek, D. VanGoethem, Validation of Finite Element Models for Puncture of Al7075 Plates of Various Thickness. 19th U.S. National Congress on Theoretical and Applied Mechanics, (Austin, TX: June 2022). https://doi.org/10.2172/2003676
Awards
3rd place winner, Engineering Oral Presentation, The Ohio State University's 36th Annual Edward F. Hayes Advanced Research Forum, 20244th place winner, Early PhD Oral Presentation Contest, GEM Annual Board Meeting & Conference, 2023
Crimson Scholar Honors, New Mexico State University, 2017-2021
Dean's List, New Mexico State University, 2017 2018, 2019, 2020, 2021
Dean's List, Iowa State University, 2018