Dr. Jason Walker

Assistant Professor

Smiling male with glasses looking directly at the camera
Bio

Dr. Jason Walker is an Assistant Professor in the Department of Mechanical and Industrial Engineering at Youngstown State University. His research interests in additive manufactuing include process development and monitoring, smart materials, and complex structures.

Dr. Walker received his PhD in Biomedical Engineering from the University of Toledo. He earned his bachelor's degrees in Mechanical and Aerospace Engineering from Case Western Reserve University.

Patents

  1. Dean, D.; Elahinia, M.; Haberland, C.; Miller, M.; Sutradhar, A.; Moghaddam, N.; Walker, J.; Skoracki, R., “Methods, Devices, and Manufacture of the Devices for Musculoskeletal Reconstructive Surgery,” U.S. Patent 20170014169, filed March 11, 2015, and issued January 19, 2017.

Invited Talks

  1. Walker, J.; “Design & Fabrication of High Resolution 3D Printed Tissue Engineered Bone Grafts,” The Technical Univeristy of Košice, Košice, Slovakia 26 July 2017

Journal Publications

  1. Xu, Y.; Luong, D.; Walker, J.; Dean, D.; Becker, M.; “Modification of Poly(Propylene Fumarate)-Bioglass Composites with Peptide Conjugates to Enhance Bioactivity,” Biomacromolecules 2018, 18(10) 3168-3177
  2. Walker, J.; Bodamer, E.; Krebs, K.; Kleinfehn, A.; Luo, Y.; Becker, M.; Dean, D.; “Effect of chemical and physical properties on the in vitro degradation of 3D printed high resolution poly(propylene fumarate) scaffolds,” Biomacromolecules 2017, 18(4) 1419-1425
  3. Walker, J.; Bodamer, E.; Kleinfehn, A.; Luo, Y.; Becker, M.; Dean, D.; “Design and mechanical characterization of solid and highly porous 3D printed poly(propylene fumarate) scaffolds,” Progress in Additive Manufacturing 2017, May 2: 1-10
  4. Walker, J.; Haberland, C.; Taheri Andani, M.; Karaca, H.; Dean, D.; Elahinia, M.; “Process development and characterization of additively manufactured NiTi shape memory parts,” Journal of Intelligent Material Systems and Structures 2016, 27(19) 2653–2660
  5. Taheri Andani, M.; Haberland, C.; Walker, J.; Karamooz, M.; Sadi Turabi, A.; Saedi, S.; Rahmanian, R.; Karaca, H.; Dean, D.; Kadkhodaei, M.; Elahinia, E.; “Achieving biocompatible stiffness in NiTi through additive manufacturing,” Journal of Intelligent Material Systems and Structures 2016, 27(19) 2661-2671
  6. Luo, Y.; Dolder, C.; Walker, J.; Mishra, R.; Dean, D.; Becker, M.; “Synthesis and Biological Evaluation of Well Defined Poly (propylene fumarate) Oligomers and their use in 3D Printed Scaffolds,” Biomacromolecules 2016, 17(2) 690-697
  7. Haberland, C.; Elahinia, M.; Walker, J.; Meier, H.; & Frenzel, J.; “On the development of high quality NiTi shape memory and pseudoelastic parts by additive manufacturing,” Smart Materials and Structures 2014, 23(10), 104002.
  8. Walker, J.; McKee, A.; Schluchter, M.; Goldber, V.; Caplan, A.; Berilla, J.; Mansour, J.; Welter, J.; “Noninvasive evaluation of hydrogel mechanical properties using ultrasound,” Annals of Biomedical Engineering 2011, 39(10):2521-2530

Refereed Conference Publications

  1. MacDonald, E.; Burden, E.; Patterson, C.; Walker, J.; Schmidt, A.; Kelly, J.; Bader, A.; Conner, B.; “Spatial Frequency Analysis for Improved Quality in Big Area Additive Manufacturing (BAAM),” ASME International Mechanical Engineering Congress & Exposition (IMECE), Abstract #70630, Tampa, Florida, 3 – 9 November 2017
  2. Taheri Andani, M.; Walker, J.; Haberland, C.; Elahinia, M.; “An Investigation of Effective Process Parameters on Phase Transformation Temperature of Nitinol Manufactured by Selective Laser Melting,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Abstract #7653, Newport, RI, 8 – 10 September 2014
  3. Rahmanian, R.; Taheri Andani, M.; Walker, J.; Haberland, C; Elahinia, M.; Dean, D.; Miller M.; “Modeling and Validation of Additively Manufactured Porous Nitinol Implants,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Abstract #7649, Newport, RI, 8 – 10 September 2014
  4. Walker, J.; Taheri Andani, M.; Haberland, C.; Elahinia, M.; “Additive Manufacturing of Nitinol Shape Memory Alloys to Overcome Challenges in Conventional Nitinol Fabrication,” ASME International Mechanical Engineering Congress & Exposition (IMECE), Abstract #40432, Montreal, Canada, 14 – 20 November 2014
  5. Walker, J.; Haberland, C.; Elahinia, M.; “An Investigation of Process Parameters on Selective Laser Sintering of Nitinol,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Abstract #3074, Snowbird, UT, 16 – 18 September 2013
  6. Haberland, C.; Walker, J.; Elahinia, M.; Meier, H.; “Visions, Concepts and Strategies for Smart Nitinol Actuators and Complex Nitinol Structures Produced by Additive Manufacturing,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Abstract #3072, Snowbird, UT, 16 – 18 September 2013
  7. Haberland, C.; Walker, J.; Elahinia, M.; Meier, H.; Frenzel, J.; “Additive Manufacturing of Complex NiTi Shape Memory Devices and Pseudoelastic Components,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Abstract #3070, Snowbird, UT, 16 – 18 September 2013

Conference Proceedings

  1. Juhasz, M.; Walker, J.; Conner, B.; “Effect of Processing Parameters on Microstructure of PH 13-8 Stainless Steel Fabricated by Hybrid DED/CNC Manufacturing,” The Minerals, Metals & Materials Society Annual Meeting (TMS), Phoenix, AZ, 11 – 15 March 2018
  2. Barret, C.; Walker, J.; Gutierrez, R.; MacDonald, E.; Conner, B.; “A Low Cost, High-speed Optical Monitoring System for Tracking Spatter During Laser Powder Bed Fusion,” The Minerals, Metals & Materials Society Annual Meeting (TMS), Phoenix, AZ, 11 – 15 March 2018
  3. Walker, J.; Vuksanovich, B.; Conner, B.; Manogharan, G.; Lonardo, R.; Thiel, G.; Rogers, K.; MacDonald, E.; “The Internet of Things (IoT) for Casting with 3D Printed Sand Molds,” The Minerals, Metals & Materials Society Annual Meeting (TMS), Phoenix, AZ, 11 – 15 March 2018
  4. Daugherty, T.; Vuksanovich, B.; Walker, J.; Cortes, P.; Conner, B.; “Hybrid manufacturing of functionally graded M300 and 316L steels,” The Minerals, Metals & Materials Society Annual Meeting (TMS), Phoenix, AZ, 11 – 15 March 2018
  5. Barret, C.; Walker, J.; Gutierrez, R.; MacDonald, E.; Conner, B.; “High Speed, High Resolution In Situ Monitoring of Spatter during Laser Powder Bed Fusion,” Materials Science and Technology (MS&T), Pittsburgh, PA, 8 – 12 October 2017
  6. Juhasz, M.; Walker, J.; Conner, B.; “Characterization of Precipitation Hardening 13-8 Stainless Steel Fabricated with Hybrid-DED Manufacturing,” Materials Science and Technology (MS&T), Pittsburgh, PA, 8 – 12 October 2017
  7. Walker, J.; Fitzgerald, A.; Haake, E.; Manna, M.; Osiniak, M.; Scrocco, M.; Theisler, K.; MacDonald, E.; Conner, B.; “Casting Low Density Lattice Structures with 3D Printed Sand Molds,” Solid Freeform Fabrication Symposium, Austin, TX, 7 – 9 August 2017
  8. Larsen, M.; Walker, J.; Montelone, S.; Swan, B.; Martin, K.; Emam, H.; Larsen, P.; Skoracki, R.; Dean, D.; “3D Printed, Resorbable, Tissue Engineered Bone Grafts for Mandibular Segmental Defect Repair,” Translational to Clinical (T2C) Regenerative Medicine Wound Care Conference, Columbus, OH, 9 – 11 March 2017
  9. Walker, J.; Becker, M.; Dean, D.; “Design, Fabrication, and Mechanical Properties of High Resolution 3D Printed Tissue Enginneering Scaffolds,” Tissue Engineering and Regenerative Medicine International Society World Congress (TERMIS-WC), Abstract #220, San Diego, CA, 11 – 14 December 2016
  10. Walker, J.; Bodamer, E.; Krebs, O; Becker, M.; Dean, D.; “Highly Controlled Polymer Synthesis and Additive Manufacturing Allow for Complex Scaffolds with Tunable Degradation,” Tissue Engineering and Regenerative Medicine International Society World Congress (TERMIS-WC), Abstract #220, San Diego, CA, 11 – 14 December 2016
  11. Walker, J.; Meder, T.; Dean, D.; “Evaluation of Mechanical Anisotropy in Additively Manufactured Poly(Propylene Fumarate) Structures,” RAPID, Orlando, FL, 17 – 19 May 2016
  12. Walker, J.; Dean, D.; “The Role of Geometry and Molecular Weight in 3D Printed Poly(Propylene Fumarate) Scaffold Resorption Kinetics,” World Biomaterials Congress, Montreal, QC, Canada, 17 – 22 May 2016
  13. Walker, J.; Dean, D.; “Advancing the State-of-the-Art of Computer-Aided Tissue Engineering Scaffold Design,” Translational to Clinical (T2C) Regenerative Medicine Wound Care Conference, Columbus, OH, 17 – 19 March 2016
  14. Bodamer, E.; Krebs, O.; Walker, J.; Dean, D.; “3D Printing High Resolution Resorbable Bone Tissue Engineering Scaffolds,” Translational to Clinical (T2C) Regenerative Medicine Wound Care Conference, Columbus, OH, 17 – 19 March 2016
  15. Claybon, A.; Sefcik, R.; Mishra, R.; Walker, J.; Dean, D.; “Growth Factors and Other Bioactive Molecules for Tissue Engineered Bone Grafts,” Translational to Clinical (T2C) Regenerative Medicine Wound Care Conference, Columbus, OH, 17 – 19 March 2016
  16. Larsen, M.; Walker, J.; Yaney, A.; Skoracki, R.; Valerio, I.; Miller, M.; Larsen, P.; Emam, H.; Dean, D.; “A Computer Assisted Approach for Surgical Planning & 3D Printing Mandibular Implants,” Translational to Clinical (T2C) Regenerative Medicine Wound Care Conference, Columbus, OH, 17 – 19 March 2016
  17. Mishra, R.; Walker, J., Skoracki, R.; Valerio, I.; Miller, M.; Dean, D.; “Bone Tissue Engineering Model for Skeletal Segmental Defects,” American Academy of Orthopaedic Surgeons: Extremity War Injuries XI (AAOS EWI), Washington D.C., 18 – 20 January 2016
  18. Dean, D.; Walker, J.; Mishra, R.; “Defect-specific Lare Format Tissue Engineered Bone Implants,” International Conference on Biofabrication, Utrecht, The Netherlands, 7 – 9 November 2015
  19. Walker, J.; Bodamer, E.; Krebs, O.; Becker, B.; Dean, D.; “Design & Additive Manufacturing of Resorbable Poly(Propylene Fumarate) Bone Tissue Engineering Scaffolds,” Materials Science and Technology (MS&T), Columbus, OH, 4 – 8 October 2015
  20. Taheri Andani, M.; Walker, J.; Nasr Esfahani, S.; Sadi Turabi, A.; Saedi, S.; Karaca, H.; Elahinia, M.; “Additive Manufacturing of Shape Memory and Superelastic Nitinol to Overcome Challenges in Conventional Fabrication,” Materials Science and Technology (MS&T), Columbus, OH, 4 – 8 October 2015
  21. Luo, Y.; Walker, J.; Dean, D.; Becker, M.L.; “Well Defined Polymer Precursors for Advanced Photochemical Printing,” Materials Science and Technology (MS&T), Columbus, OH, 4 – 8 October 2015
  22. Walker, J.; Bodamer, E.; Krebs, O.; Dean, D.; "Degradation of 3D Printed, Highly Porous, Bone Tissue Engineering Scaffolds," Tissue Engineering and Regenerative Medicine International Society World Congress (TERMIS-WC), Abstract #1588, Boston, MA, 8 – 11 September 2015
  23. Mishra, M.; Walker, J.; Skoracki, R.; Valerio, I.; Miller, M.; Dean, D.; “Growth Factor Regimen for Tissue Engineered Bone for Mandibular Segmental Defects,” Military Health System Research Symposium (MHSRS), Ft. Lauderdale, FL, 17 – 20 August, 2015
  24. Jahadakbar, A.; Taheri Andani, M.; Moghaddam, N.; Haberland, C.; Elahinia, M.; Dean, D.; Walker, J.; Skoracki, R.; Miller, M.; “Additive Manufacturing of Nitinol Fixation Hardware for Reconstructing Mandibular Segmental Defects,” ASM International: Shape Memory & Superelastic Technologies (SMST), Chipping Norton, Oxfordshire, UK, 18 – 22 May, 2015
  25. Walker, J.; Dean, D.; “3D Printing Resorbable Bone Tissue Engineering Scaffolds with Mathematically Defined Porous Architecture,” National Center for Regenerative Medicine (NCRM) Annual Retreat, Cleveland, OH, 6 March 2015
  26. Walker, J.; Elahinia, M.; Moghaddam, N.; Taheri Andani, M.; Rahmanian, R.; Dean, D.; “Site-specific Properties and the Additive Manufacturing of NiTi Musculoskeletal Implant Structures,” Tissue Engineering and Regenerative Medicine International Society Americas Meeting (TERMIS-AM), Washington D.C., 13 – 16 December 2014
  27. Walker, J.; Taheri Andani, M.; Haberland, C.; Elahinia, M.; “Additive Manufacturing of Nitinol Components with Designed Porosity by Selective Laser Melting,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Abstract #7724, Newport, RI, 8 – 10 September 2014
  28. Walker, J.; Haberland, C.; Taheri Andani, M.; Elahinia, M.; “Analysis of Density of NiTi Structures Manufactured by Selective Laser Melting,” Midwest ASB Regional Meeting, Akron, OH, 4 – 5 March 2014
  29. Walker, J.; Spaggiari, A.; Elahinia, M.; “Changes in Length during Free End Torsion of Nitinol Rods.,” The International Conference on Shape Memory and Superelastic Technologies (SMST), Abstract #33500, Prague, Czech Republic, 21 – 14 May 2013
  30. Walker, J.; Elahinia, M.; “Fabrication of Nitinol Components by Laser Sintering,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Presentation #8132, Stone Mountain, GA, 19 – 21 September 2012
  31. Walker, J.; Karbaschi, Z.; Elahinia, M.; “Novel Design of an Active Ankle Foot Orthosis using SMA,” ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS), Presentation #5175, Phoenix, AZ, 18 – 21 September 2011
  32. Walker, J.; Mansour, J.; Kaplan, A; Goldberg, V and Welter, J.F.; “Poroelastic material properties of hydrogels and cartilage evaluated using ultrasound,” Biomedical Engineering Society Annual Meeting, Austin, TX, 6 – 9 October 2010
  33. Walker, J.; McKee, A.; Berilla, J.; Baskaran, H.; Mansour, J.; and Welter, J.F.; “Nondestructive ultrasonic evaluation of mechanical properties of agarose gels,” Orthopaedic Research Society Annual Meeting, New Orleans, LA, 6 – 9 March 2010
  34. McKee, A.; Walker, J.; Mansour, J.M.; and Welter, J.F.; “Noninvasive evaluation of mechanical properties through the use of ultrasound technology,” Biomedical Engineering Society Annual Meeting, Pittsburgh, PA, 7 – 10 October 2009