Ozgur, Keles

ozgur

Assistant Professor

Email

Preferred: ozgur.keles@sjsu.edu

Telephone

Preferred: (408)-924-4000

Office

E385K

Education

  • B.S : Metallurgical and Materials Eng, Middle East Technical University,Turkey (2005)
  • M.S: Metallurgical and Materials Eng, Middle East Technical University Turkey (2008)
  • Ph.D: Materials Engineering,Purdue University West Lafayette (2013)

Bio

Academic Appointments

  • Assistant Professor, San Jose State University (August 2015-)
  • Lecturer and Senior Research Associate, Illinois Institute of Technology (2013-2015)

Research and Scholarly Interests

Details can be found at  http://www.ozgurkeles.com/p/research_20.html.

"Why and how do things break?" has been a big question for me. Our long-term research goal is to generate fundamental knowledge regarding processing-structure-property interrelationships of strong and tough materials. We use additive manufacturing techniques and tape casting to process materials containing spatially controlled hierarchical structures. In addition, we use finite element method to investigate mechanical behavior of porous materials. Here are some of our current research projects:

  1. Mechanical reliability of additively manufactured composites and polymers.
  2. Stochastic fracture of porous materials.
  3. Solution synthesis of ceria doped zirconia platelets containing graphene quantum dots.
  4. Hierarchical toughening in epoxy composites reinforced with graphene quantum dots and single-crystal alumina platelets.
  5. Effect of texture on the mechanical reliability of alumina.
  6. Freeze casting of piezoelectric materials to improve mechanical reliability and electronic properties.
  7. Mechanical behavior of additively manufactured metals in collaboration with Jabil Circuit.
  8. Effect of build parameters on the mechanics of Nylon 12 produced by HP Jet Fusion system in collaboration with Jabil Circuit.

Selected Publications

  1. Keleş, Ö, Blevins, CW, and Bowman, KJ. Effect of build orientation on the mechanical reliability of 3D printed ABS, Rapid Prototyping Journal, Accepted, 2016.
  2. Keleş, Ö, García, RE, and Bowman, KJ. Stochastic failure of isotropic, brittle materials with uniform porosity. Acta Materialia, 61(8):2853-2862, 2013.
  3. Keleş, Ö, García, RE, and Bowman, KJ. Deviations from Weibull statistics in brittle porous materials. Acta Materialia, 61(19):7207-7215, 2013.
  4. Keleş, Ö, García, RE, and Bowman, KJ. Failure variability in porous glasses: stress interactions, crack orientation, and crack size distributions. Journal of the American Ceramic Society, 97(12):3967-3972, 2014.
  5. Keleş, Ö, García, RE, and Bowman, KJ. Pore–crack orientation effects on fracture behavior of brittle porous materials. International Journal of Fracture, 187(2):293-299, 2014.
  6. Boylan-Ashraf, P, Keleş, Ö, Freeman, S, Shelley, M, and Calfee, R. Can Students Flourish in Engineering Classrooms? Journal of STEM Education: Innovations and Research, (2016) Accepted.

Recent Funding

  1. San Jose State University, College of Engineering, Kordestani Endowed Chair Position, Reliability in additively manufactured materials and textured ceramics, $39,509, PI, 2015.
  2. San Jose State University, College of Engineering, Faculty Mini Grant Application for Support of Student Research Scholars, Effect of porosity on mechanical reliability of fused deposition modeled ABS, $9,990, PI, 2015.

Students

B.S. students

  1. David Macias
  2. Daniel Fok
  3. Jimmy Huynh
  4. Ryan Oneill

M.S. students

  1. Eric Anderson
  2. Alex Cress
  3. Sebastian Rozo
  4. Stephanie Luke
  5. Yosune Casana 
  6. Warren Jolley

Links

Özgür Keleş Blog