Publications

• W. Tayon, D. Pagan & J. Hochhalter (2024). HEDM Measurement and CPFEM Simulation of the Impact of Residual Stresses in a LPBF Inconel Alloy 625 Specimen. IJF. Vol. 18, 108163. Published, 04/01/2024.
• C. Cooper, G. Whelan & J. Hochhalter (2024). Predicting Fatigue Indicator Parameters in Additively Manufactured IN625 using Genetic Programming based Symbolic Regression. IJF. Vol. 178, 108019. Published, 01/01/2024.
• T. Whitaker, J.Cochran, J. Hochhalter & S. Rao (2024). Flow regimes and heat transfer mechanisms affecting supercritical transition in microchannels. IJHTM. Vol. 218. Published, 01/01/2024.
• K. Garbrecht, D. Birky, B. Leser, J. Emery & J. Hochhalter (2023). Complementing a Continuum Thermodynamic Approach to Constitutive Modeling with Symbolic Regression. JMPS. Vol. 181, 105472. Published, 12/01/2023.
• H. Oh (2023). Genetic Programming Based Symbolic Regression for Closed-Form Solutions to Differential Equations. Engineering with Computers. Published, 11/18/2023.
• D. Birky, K. Garbrecht, J. Emery & J. Hochhalter (2023). Generalizing the Gurson Model Using Symbolic Regression and Transfer Learning to Relax Inherent Assumptions. MSMSE. Vol. 31, 085005. Published, 10/09/2023.
• G. Bomarito, P. Leser, N. Strauss, K. Garbrecht & J. Hochhalter (2023). Automated Learning of Interpretable Models with Quantified Uncertainty. CMAME. Vol. 403, Part A, 115732. Published, 01/01/2023.
• G. Bomarito, P. Leser, N. Strauss, K. Garbrecht & J. Hochhalter (2022). Bayesian Model Selection for Reducing Bloat and Overfitting in Genetic Programming for Symbolic Regression. GECCO Conference Proceedings. Published, 03/31/2022.
• J.A. Newman & W. Tayon, T. Ruggles, S. Yeratapally, C. Brice, J. Hochhalter, J. Baughman, H. Claytor (2018). Characterization of Titanium Alloys Produced by Electron Beam Directed Energy Deposition. (pp. 33). Vol. NASA/TM-2018-220111. NASA NTRS. Published, 11/01/2018.
  https://ntrs.nasa.gov/search.jsp?R=20180008441
• J. Warner & G. Bomarito, G. Heber, J. Hochhalter (2016). ScIFEN User’s Guide. (pp. 19). Vol. NASA/TM-2017-219652. NASA NTRS. Published, 04/01/2016.
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa....
• J. Warner & G. Bomarito, G. Heber, J. Hochhalter (2016). Scalable implementation of finite elements by NASA_Implicit (ScIFEi). (pp. 19). Vol. NASA/TM-2016-219180. NASA NTRS. Published, 04/01/2016.
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa....
• J. Hochhalter & T. Krishnamurthy, M. Aguilo (2016). Strain-based damage determination using finite element analysis for structural health management. (pp. 19). Vol. NASA/TP-2016-219186. NASA NTRS. Published, 04/01/2016.
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa....
• J. Warner (2016). Probabilistic damage characterization using a computationally-efficient bayesian approach. (pp. 28). Vol. NASA/TP-2016-219169. NASA NTRS. Published, 03/01/2016.
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa....
• A. Cerrone & J. Hochhalter, G. Heber, A. Ingraffea (2014). On the Effects of Modeling As-Manufactured Geometry: Toward Digital Twin. International Journal of Aerospace Engineering. Vol. 439278, 10. Published, 08/27/2014.
  http://dx.doi.org/10.1155/2014/439278
• E. Saether & J. Hochhalter, E. Glaessgen, Y. Mishin (2014). Multiscale Analysis of Structurally-Graded Microstructures Using Molecular Dynamics, Discrete Dislocation Dynamics and Continuum Crystal Plasticity. (pp. 52). Vol. NASA/TM-2014-218265. NASA NTRS. Published, 05/01/2014.
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa....
• J. Hochhalter & W. Leser, J. Newman, E. Glaessgen, V. Gupta, V. Yamakov, S. Cornell, S. Willard, G. Heber (2014). Coupling damage-sensing particles to enable the digital twin Concept. (pp. 15). Vol. NASA/TM-2014-218257. NASA NTRS. Published, 04/01/2014.
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa....
• A. Spear & A. Priest, M. Veilleux, A. Ingraffea, J. Hochhalter (2011). Surrogate Modeling of High-Fidelity Fracture Simulations for Real-Time Residual Strength Predictions. AIAA Journal. Vol. 49, 2770-2782. Published, 12/01/2011.
  https://doi.org/10.2514/1.J051159
• J. Hochhalter & D. Littlewood, M. Veilleux, J. Bozek, A. Maniatty, A. Ingraffea (2011). A geometric approach to modeling microstructurally small fatigue crack formation: III. Development of a semi-empirical model for nucleation. Modelling and Simulation in Materials Science and Engineering. Vol. 19, 035008. Published, 03/22/2011.
  https://iopscience.iop.org/article/10.1088/0965-03...
• J. Hochhalter & D. Littlewood, R. Christ Jr., M. Veilleux, J. Bozek, A. Maniatty, A. Ingraffea (2010). A geometric approach to modeling microstructurally small fatigue crack formation: II. Physically based modeling of microstructure-dependent slip localization and actuation of the crack nucleation mechanism in AA 7075-T651. Modelling and Simulation in Materials Science and Engineering. Vol. 18, 045004. Published, 03/11/2010.
• J. Emery & D Hochhalter, PA Wawrzynek, G Heber, AR Ingraffea (2009). DDSim: A hierarchical, probabilistic, multiscale damage and durability simulation system – Part I: methodology and Level I. Engineering Fracture Mechanics. Vol. 76, 1500-1530. Published, 07/01/2009.
• J. Bozek & JD Hochhalter, MG Veilleux, M Liu, G Heber, SD Sintay, AD Rollett, DJ Littlewood, AM Maniatty, H Weiland, RJ Christ Jr, J Payne, G Welsh, DG Harlow, PA Wawrzynek, AR Ingraffea (2008). A geometric approach to modeling microstructurally small fatigue crack formation: Probabilistic simulation of constituent particle cracking in AA 7075-T651. Modelling and Simulation in Materials Science and Engineering. Vol. 16, 065007. Published, 08/11/2008.
• J. Hochhalter & JJ Massarello, AK Maji, PA Fuierer (2007). Quantifying the effects of curing parameters and composite characteristics on fiber print-through. Journal of advanced materials. Vol. 39, 40-48. Published, 08/01/2007.
• J. Massarrello & J.D. Hochhalter, P. Fuierer, A. Maji, J. Welsh (2006). Fiber print-through mitigation technique for composite mirror replication. International Society for Optics and Photonics. Vol. 45, 123401. Published, 12/01/2006.

Presentations

• University of Utah, Mechanical Engineering, USAC Colloquium (2019; Salt Lake City, UT) . Invited Talk/Keynote, Presented, 02/15/2019.
• J. Hochhalter, G. Bomarito, S. Yeratapally, P. Leser, T. Ruggles, J. Warner (2018) “Coupling HREBSD and DIC for uniqueness and precision of calibrated crystal plasticity parameters.” Keynote. SES Annual Meeting. Invited Talk/Keynote, Presented, 10/11/2018.
• K. Small, J. Hochhalter, R. Carptenter, S. Luckowski, M. Clemente, E. Jelis, B. Jackson, D. Fullwood, M. Taheri (2018) “Residual strain characterization of additively manufactured Ni superalloy using HR-EBSD analysis.” TMS Annual Meeting. Conference Paper, Refereed, Presented, 03/13/2018.
• J. Hochhalter, S. Yeratapally, P. Leser, G. Bomarito, T. Ruggles, R. Russell, D. Dawicke (2018) “Integrating computational and experimental methods to quantify microstructure sensitivity of thin fatigue-critical components.” Invited. TMS Annual Meeting. Conference Paper, Refereed, Presented, 03/13/2018.
• J. Gordon, C. Haden, J. Hochhalter, D. Harlow (2018) “Statistical characterization of microstructure and fatigue of wire and arc additive manufactured stainless steel 304.” Invited. TMS Annual Meeting. Invited Talk/Keynote, Presented, 03/13/2018.
• R. Russell, D. Dawicke, J. Hochhalter (2018) “Composite overwrapped pressure vessel (COPV) life test.” Invited. TMS Annual Meeting. Invited Talk/Keynote, Presented, 03/13/2018.
• University of Utah Seminar (2018; Salt Lake City, UT) . Invited Talk/Keynote, Presented, 01/30/2018.
• Colorado School of Mines Graduate Student Seminar (2018; Golden, CO). Invited Talk/Keynote, Presented, 01/22/2018.

Research Groups

• Levi Marland, Undergraduate Student. ME. 11/05/2018 - 05/07/2021. Awards/Scholarships/Stipends: NASA Summer Internship (2019).