Doruk Baykal
Doruk Baykal, Ph.D.
Senior Associate
Biomedical Engineering
  • Menlo Park

Dr. Baykal’s area of expertise includes biotribology, with an emphasis on wear testing of articular cartilage, hydrogels and polymers used in medical devices, such as ultra high molecular weight polyethylene (UHMWPE) and polyether ether ketone (PEEK). His primary focus is on pin-on-disk testing. In his previous research, Dr. Baykal developed and implemented customized wear testing protocols for articular cartilage and hydrogels. He has experience with standards pertaining to wear testing of medical implants, biomaterials including polymeric and metallic materials (ASTM F732, ISO 14242 and 14243). He is trained on AMTI OrthoPOD pin-on-disk tester and AMTI knee wear tester. Dr. Baykal has also worked on evaluating matrix constituents of articular cartilage tissue. This work involved histology and Fourier transform infrared spectroscopy (FTIR) including multivariate analysis, specifically partial least squares regression method. Dr. Baykal has extensive knowledge of biphasic cartilage models. He is proficient in Matlab, C++ and Xcode, and wrote an iPad app for clinical use.

Prior to joining Exponent, Dr. Baykal was a graduate researcher in the Implant Research Center at Drexel University. His research was the tribological assessment of hydrogels for replacing damaged articular cartilage. He is experienced in mechanical and friction testing, lubrication analysis, and biphasic material characterization.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Biomedical Engineering, Drexel University, 2013
  • M.S., Biomedical Engineering, Drexel University, 2010
  • B.S., Mechatronics Engineering, Sabanci University, Turkey, 2007
  • Drexel University Calhoun Fellowship, 2007-2013

    Drexel University Provost Fellowship, 2007–2009

    Sakıp Sabancı Full Scholarship for Academic Excellence, 2005–2007

    Sabanci University Success Scholarship, 2003–2007

LANGUAGES

  • Turkish

Publications

Baykal D, Siskey RS, Underwood RJ, Briscoe A, Kurtz SM. The biotribology of PEEK-on-HXLPE bearings is comparable to traditional bearings on a multidirectional pin-on-disk tester. Clinical Orthopaedics and Related Research 2016, doi:10.1007/s11999-016-4989-7

Kurtz SM, Lau EC, Baykal D, Springer BD. Outcomes of ceramic bearings after revision total hip arthroplasty in the medicare population. The Journal of Arthroplasty 2016, doi:10.1016/j.arth.2016.02.054.

Tohfafarosh M, Baykal D, Kiel JW, Mansmann K, Kurtz SM. Effects of gamma and e-beam sterilization on the chemical, mechanical and tribological properties of a novel hydrogel. Journal of the Mechanical Behavior of Biomedical Materials 2016; 53: 250–256.

Haider H, Baykal D. Wear Assessment of UHMWPE with Pin-on-Disc Testing. In: UHMWPE Biomaterials Handbook: Ultra-High Molecular Weight Polyethylene in Total Joint Replacements and Medical Devices, Third Edition. Kurtz SM (ed), Elsevier Inc., Waltham, MA, 2016.

Kurtz SM, MacDonald DW, Kocagöz S, Tohfafarosh M, Baykal D. Can pin-on-disk testing be used to assess the wear performance of retrieved uhmwpe components for total joint arthroplasty? BioMed Research International, Article ID 581812, 2014.

Baykal D, Siskey RS, Haider H, Saikko V, Ahlroos T, Kurtz SM. Advances in tribological testing of artificial joint biomaterials using multidirectional pin-on-disk testers. Journal of the Mechanical Behavior of Biomedical Materials 2014; 31:117–134.

Baykal D, Underwood RJ, Mansmann K, Marcolongo M, Kurtz SM. Evaluation of friction properties of hydrogels based on a biphasic cartilage model. Journal of the Mechanical Behavior of Biomedical Materials 2013; 28:263–273.

Baykal D, Day J, Jaekel D, Katta K, Mansmann K, Kurtz SM. Tribological evaluation of hydrogel articulations for joint arthroplasty applications. Journal of the Mechanical Behavior of Biomedical Materials 2012; 14:39–47. Baykal D, Irrechukwu O, Lin PC, Fritton K, Spencer RG, Pleshko N. Nondestructive assessment of engineered cartilage constructs using near-infrared spectroscopy. Applied Spectroscopy 2010; 64(10):1160–1166.

Presentations

Baykal D, Tohfafarosh M, Underwood R, McGoverin C, Mansmann K, Pleshko N, Kurtz SM. Evaluation of biphasic lubrication properties of hydrogels and microscopic characterization of their in vitro wear against articular cartilage. Podium presentation, 2nd International Conference on BioTribology, Toronto, Canada, 2014.

Baykal D, Rau AC, Underwood RJ, Siskey RS, Kurtz SM. Frictional heating of PEEK-UHMWPE bearing couple on pin-on-disk tester. Podium presentation, 1st International PEEK Meeting, Philadelphia, PA, 2013.

Baykal D, Katta J, Mansmann K, Kurtz SM. Evaluation of tribological properties of CyborGel for replacing articular cartilage. Podium presentation, 3rd International Congress on Biohydrogels, Florence, Italy, 2011.

Baykal D, Day JS, Mansmann K, Katta J, Kurtz SM. A novel method to quantify wear of hydrogels using submerged measurements. Poster presentation, 24th European Conference on Biomaterials, Dublin, Ireland, 2011.

Baykal D, Siskey RL, Kurtz SM. Tribological studies of highly crosslinked and Vitamin-E blended UHMWPE. Poster presentation, Orthopaedic Research Society, ORS 56th Annual Meeting, New Orleans, LA, 2010.

Baykal D, Irrechekwu O, Lin P-C, Fritton KE, Spencer R, Pleshko N. Non-invasive assessment of engineered cartilage constructs using near infrared spectroscopy. Poster presentation, Orthopaedic Research Society, ORS 56th Annual Meeting, New Orleans, LA, 2010.


Knowledge

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Biomedical Engineering, Drexel University, 2013
  • M.S., Biomedical Engineering, Drexel University, 2010
  • B.S., Mechatronics Engineering, Sabanci University, Turkey, 2007
  • Drexel University Calhoun Fellowship, 2007-2013

    Drexel University Provost Fellowship, 2007–2009

    Sakıp Sabancı Full Scholarship for Academic Excellence, 2005–2007

    Sabanci University Success Scholarship, 2003–2007

LANGUAGES

  • Turkish