My group develops artificially-intelligent discovery machines that use active learning and high-throughput approaches to discover new, synthesizable, and processable materials in unexplored chemical and structural spaces. We investigate processing-structure-property-design (PSP-D) interrelationships in tough, strong, lightweight, multi-functional, and sustainable materials. My group couples advanced additive manufacturing techniques to control hierarchical structures from sub-nano to macro-scale with data-driven numerical approaches to discover material nature. Currently, I am an Associate Professor at the Department of Chemical and Materials Engineering, San Jose State University. Let me know if you have any questions at [email protected].
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Journal Publications:
26. Ozgur Keles, A. Karakoc, C.L. Wu and E.H. Anderson, Enhanced strength toughness and reliability in crab exoskeleton inspired additively manufactured porous thermoplastics Rapid Prototyping Journal (2024) Under review.
25. Ozgur Keles and P. Deshpande, “Mechanical Behavior of Graphene Quantum Dot Epoxy Nanocomposites: A Molecular Dynamics Study” Materials Letters, (2024) 136206.
24. P. Deshpande and Ozgur Keles, Simulation data for engineering graphene quantum dot epoxy nanocomposites using molecular dynamics, Data in Brief, (2024) 53 110169.
23. Ozgur Keles, V. Brubaker-Gianakos F. Marbouti and V. Viswanathan “Experiential learning of engineering concepts in immersive virtual learning environments (VLEs),” Journal of STEM Education: Innovations and Research 24 (2023).
22. Dei Rossi, Joseph, Ozgur Keles, and Vimal Viswanathan. “Fused Deposition Modeling with Induced Vibrations: A Study on the Mechanical Characteristics of Printed Parts,” Applied Sciences 12.18 (2022) 9327.
21. S. Srinivasan and Ozgur Keles, “Effect of raster angle on mechanical properties of 3D printed short carbon fiber reinforced acrylonitrile butadiene styrene,” Composites Communications, 32 (2022) 101163.
20. Christopher M. Fancher, Ozgur Keles, Matthias C. Ehmke, Keith J. Bowman, “Temperature dependence of field-response mechanisms in 0.4Ba(Zr0.2Ti0.8)O3–0.6(Ba0.7Ca0.3)TiO3,” Applied Physics Letters, 119 (2) 022904.
19. Stephanie Luke, David Soares, Janaye Marshall, James Shedden, Ozgur Keles, “Effect of fiber content and fiber orientation on mechanical behavior of fused filament fabricated continuous-glass-fiber-reinforced nylon,” Rapid Prototyping Journal, 27 (2021) 1346-1354.
18. Ozgur Keles, Yinchuan He and Birsen Sirkeci-Mergen, “Prediction of elastic stresses in porous materials using fully convolutional networks,” Scripta Materialia, 197 (2021) 113805.
17. A. Bokare, D. Nordlund, C. Melendrez, R. Robinson, Ozgur Keles, A. Wolcott, and F. Erogbogbo, “Surface Functionality and Formation Mechanisms of Carbon and Graphene Quantum,” Diamond and Related Materials, 110 (2020) 108101.
16. Alex K. Cress, Jimmy Huynh, Eric H. Anderson, Ryan O’neill, Yanika Schneider, Ozgur Keles, “Effect of recycling on the mechanical behavior and structure of additively manufactured acrylonitrile butadiene styrene (ABS),” Journal of Cleaner Production, 279 (2021) 123689.
15. Alp Karakoc and Ozgur Keles, “A predictive failure framework for brittle porous materials via machine learning and geometric matching methods,” Journal of Materials Science, 55 (2019) 4734-47.
14. Joel R Seibert, Ozgur Keles, Jun Wang, and Folarin Erogbogbo, “Data on Thermal Conductivity and Dynamic Mechanical Properties of Graphene Quantum dots in epoxy,” Data in Brief, 28 (2020) 105008.
13. Joel R Seibert, Ozgur Keles, Jun Wang, and Folarin Erogbogbo, “Infusion of graphene quantum dots to modulate thermal conductivity and dynamic mechanical properties of polymers,” Polymer, 85 (2019) 121988.
12. Pashupati Pokhatel, Dequan Xiao, Folarin Erogbogbo, Ozgur Keles, and Dai-Soo Lee, “A hierarchical approach for creating electrically conductive network structure in polyurethane nanocomposites using a hybrid of graphene nanoplatelets, carbon black and multi-walled carbon nanotubes,” Composites Part B: Engineering, 161 (2019), 169-182.
11. Ozgur Keles, Eric Anderson, Jimmy Huynh, Jeff Gelb, Jouni Freund, and Alp Karakoc, “Stochastic fracture of additively manufactured porous composites,” Scientific Reports, 8 (2018), 15437.
10. Ozgur Keles, Jimmy Huynh, and Eric Anderson, “Mechanical reliability of short carbon fiber reinforced ABS produced via vibration assisted fused deposition modeling,” Rapid Prototyping Journal, 24 (2018) 1572-1578. (PDF)
9. Navathej Gobi, Darshan Vijayakumar, Ozgur Keles, and Folarin Erogbogbo, “Graphene Quantum Dots Infusion to Create Stronger, Tougher, and Brighter Polymer Composites,” ACS Omega, 2 (2017) 4356-4362. (PDF)
8. Peggy Boylan-Ashraf, Ozgur Keles, Steve Freeman, Mack Shelley, and Robert Calfee, “Can Students Flourish in Engineering Classrooms?,” Journal of STEM Education: Innovations and Research, 18 (2017) 16-24. (PDF)
7. Ozgur Keles, Caleb W. Blevins, and Keith J. Bowman, “Effect of build orientation on the mechanical reliability of 3D printed ABS,” Rapid Prototyping Journal, 23 (2017) 320-328. (PDF)
6. Ozgur Keles, R. Edwin Garcia, and Keith J. Bowman, “Sensitivity of fracture strength in porous glass,” International Journal of Applied Glass Science, 8 (2017) 116-123. (PDF)
5. Ozgur Keles, Nicholas P. Barcenas, Daniel H. Sprys, and Keith J. Bowman, “Effect of porosity on strength distribution of microcrystalline cellulose,” AAPS PharmSciTech, (2015).
4. Ozgur Keles, R. Edwin Garcia, and Keith J. Bowman, “Failure Variability in Porous Glasses: Stress Interactions, Crack Orientation, and Crack Size Distributions,” Journal of the American Ceramic Society, 97 (2014) 3967–3972. (PDF)
3. Ozgur Keles, R. Edwin Garcia, and Keith J. Bowman, “Pore-crack orientation effects on fracture behavior of brittle porous materials,” International Journal of Fracture, 187 (2014) 293–299. (PDF)
2. Ozgur Keles, R. Edwin Garcia, and Keith J. Bowman, “Deviations from Weibull statistics in brittle porous materials,” Acta Materialia, 61 (2013) 7207–7215. (PDF)
1. Ozgur Keles, R. Edwin Garcia, and Keith J. Bowman, “Stochastic failure of isotropic, brittle materials with uniform porosity,” Acta Materialia, 61 (2013) 2853–2862. (PDF)
Conference Publications:
5. P. Deshpande and O. Keles “Effect of Graphene Quantum Dots on the Mechanical Properties of Bisphenol F-based epoxy” American Society for Composites 38th Technical Conference September 18-20 2023 Boston MA USA.
4. Croom, Brendan P; Keles, Ozgur; Flores, Mark D, Prediction Of Crack Propagation Along Non-Uniform Raster Patterns In Am Composites, ASC 35th Technical (Virtual) Conference, 2020.3. Joseph Dei Rossi, Ozgur Keles, and Vimal Viswanathan, Fused deposition modeling with added vibrations: a parametric study on the accuracy of the printed parts, Proceedings of the ASME 2019 International Mechanical Engineering Congress and Exposition, IMECE2019 November 11-14, 2019, Salt Lake City, UT, USA, Accepted. (PDF)
2. Saishruthi Swaminathan, Tejash Shah, Birsen Sirkeci-Mergen, and Ozgur Keles, Machine Learning Models for Predicting Fracture Strength of Porous Ceramics and Glasses, The 14th International Conference on Data Science, Las Vegas, (2018) Accepted. (PDF)
1. Ozgur Keles and Eric Anderson, Mechanical reliability of fused deposition modeled polymers and composites, TechConnect Briefs, 4 (2018) 126-129. (PDF)
Professional societies:
• Board member and member of Society of Plastics Engineers Golden Gate Section, 2018-present.
• Member of The American Ceramic Society
• Member of The Minerals, Metals & Materials Society
• Member of The American Society of Mechanical Engineers.
• Member of ASM International.
Self-learning modules:
• Ozgur Keles, “Weibull fit to computer generated fracture data,” Wolf
ram Demonstrations Project, 2012.
• Ozgur Keles, “Lecture series on fracture mechanics in Turkish,” 2012.
Contact: [email protected]
A better world – free of money, free of war – is easier said than done, but that is exactly what I am striving for. By understanding both Mother Nature and human nature, we can develop unique solutions to problems in areas like energy and education, ultimately aiming for a transformation into a sustainable, self-learning society. Therefore, I am continually educating myself, conducting research, and sharing my findings with everyone.
I like photography and taking pictures at any scale.
