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Jeff Hoffman, Ph.D.

Associate Professor
Office: EIB 409J
Phone: 907-786-4815
Email: jahoffman@uaa.alaska.edu

Biography

Dr. Hoffman has worked in a number of industries while employed with companies such as Shell Oil, Borg Warner Automotive, and a biomedical company, Pioneer Surgical. His research interests are diverse but include the recent design of a residential wood heating device designed specifically for rural Alaska. He is a co-author on nine US utility patents for a range of devices related to the biomedical field including implants and instruments. Recent funded research entailed failure analysis of high mast light poles fasteners and a recent bearing design evaluation for underwater hydrokinetic devices. Dr. Hoffman is the director of UAA's Prototyping Lab that houses the CoEng manufacturing facilities that is used by students, faculty, and clients off campus. He currently supervises the "Engineer on Loan" program at UAA where inventors are paired with engineering students to help with designing and fabrication of their inventions. Finally, Dr. Hoffman supervises the CoEng Tutoring Center that employs engineering students to help fellow classmates navigate the engineering curriculum.

Education

Ph.D. Mechanical Engineering, University of Wisconsin, Madison, 1998

MS Mechanical Engineering, University of Wisconsin, Madison, 1996

BS Mechanical Engineering, Michigan Technological University, 1990

Career History

2010-present Associate Professor, Department of Mechanical Engineering, University of Alaska, Anchorage

2005-2010 Senior Research Engineer, Pioneer Surgical Technology, Marquette, Michigan

2000-2005 Assistant Professor, Mechanical Engineering, Northern Michigan University

1999-2000 Senior Engineer, Signature Research Inc., Calumet, Michigan

1998-1999 Research Assistant, Michigan Technological University, Calumet, Michigan

1993-1998 Research Assistant - Engine Research Center, University of Wisconsin-Madison

1990-1993 Mechanical Engineer - Shell Chemical Company, Belpre Ohio

Teaching Responsibilities

  • Fluid Mechanics
  • Thermodynamics
  • Heat Transfer
  • Senior Projects
  • Solid Modeling (CAD)
  • Engineering Graphics
  • Introduction to Engineering
  • Mechanical Design
  • Design for Manufacturing

Professional and Departmental Service

2013-present Supervisor for the College of Engineering Tutoring Center
2011-present Director and supervisor for the UAA Prototyping Lab
2011-2014 Mechanical Engineering Department Chair

Research Interests

Design of mechanical systems related to renewable energies. Manufacturing with emphasis on the use of CAD up through fabrication of working prototypes.

Publications

Bromaghin A., Ali M., Ravens T., Petersen T., Hoffman J., "Experimental Study of Abrasion Characteristics for Critical Sliding Components for use in Hydrokinetic Devices", International Journal of Renewable Energy. 2014.

Hoisington D., Hamel S., Hoffman J., "Experimental Failure Analysis of High Tower Light Pole Fasteners", Transportation Research Board. Washington D.C. 2014.

Lobontiu, N., Cullin M., Hoffman J., Ali M., "Circular-Axis Flexure Hinges", International IMT Conference Oradea, Romania, 2013.

Lobontiu, N., Cullin M., Ali M., Hoffman J., "Planar Compliances of Thin Circular-Axis Notch Flexure Hinges with Midpoint Radial Symmetry", Mechanics Based Design of Structures and Machines, 2013.

Bromaghin A., Ali M., Ravens T., Petersen T., Hoffman J., "Abrasion Analysis of Critical Sliding Components of Hydrokinetic Devices: An Empirical Study", Marine Energy Technology Symposium, Washington D.C., April 2013.

Ali, M., Hayes P., Hoffman J., "Impact Behavior of Graded Porous Hip Joint", Proceedings of ASME 2013 Summer Bioengineering Conference, 2013

Ali M., Hoffman J., Clark J., Kara T., Takak S., ”Modeling of Impact Response of Composite Graded Structure”, Proceedings of IMECE11, ASME International Mechanical Engineering Congress and Exposition, 2011.

Kara T., Takak S., Ali M., Hoffman J., ”The Effects of a Functionally Graded Cellular Structure on Impact Properties of a Hip Joint: A Finite Element Study”, Proceedings of the ASME 2011 Summer Bioengineering Conference, 2011.

Hoffman, Jeffrey A., William R. Reynolds, “Infrared Signature Estimates of a High-Temperature Exhaust Plume”, Proceedings of the Ground Target Modeling and Validation Conference, Houghton, MI. 1999.

Schmidt, David P., et. al., “Pressure-Swirl Atomization in the Near Field”, SAE Paper 1999-01-0496, Society of Automotive Engineers, Warrendale, PA. 1999.

Hoffman, Jeffrey A., “Mass Related Properties of Transient Sprays“, Ph.D. Thesis, University of Wisconsin – Madison, 1998.

Hoffman, Jeffrey A., Farhan Kahtri, Jay K. Martin, “Mass-Related Properties of Atomizers for Direct-Injection SI Engines.”, SAE Paper 980500, Society of Automotive Engineers, Warrendale, PA, 1998.

Hoffman, Jeffrey A., Idriss Nouar, David P. Schmidt, Jay K. Martin, and Chris Rutland, “The Experimental Comparison of a Single-Liquid High-Pressure Spray Model” ILASS-Americas 98, 11th Annual Conference of Liquid Atomization and Spray Systems, Sacramento, CA., 1998.

Hoffman, Jeffrey A., Jay K. Martin, “Review of Transient Mass Flux Measurements using a Mechanical Transient Patternator.”, ILASS-Americas 97, 10th Annual Conference of Liquid Atomization and Spray Systems, Toronto, Canada, 1997.

Hoffman, Jeffrey A., Jay K. Martin, and Sam W. Coates, “Spray Photographs and Preliminary Mass Flux Distribution Measurements of a Pulsed Pressure Atomizer., ILASS-Americas 96, 9th Annual Conference of Liquid Atomization and Spray Systems, 1996.

Hoffman, Jeffrey A., Jay K. Martin, and Sam W. Coates, “A Technique for Obtaining Spatial and Temporal Mass Flux Measurements of a Pulsed Spray - a Description of the Hardware and Methodology.”, Review of Scientific Instruments, November, 1997.

Hoffman, Jeffrey A., Eric Eberhardt, and Jay K. Martin, “Comparison Between Air-Assisted and Single-Fluid Pressure Atomizers for Direct-Injection SI Engines Via Spatial and Temporal Mass Flux Measurements.”, SAE Paper 970630, Society of Automotive Engineers, Warrendale, PA, 1997.

Casarella, Mark, Marc L. Syvertsen, Jay K. Martin, Jeffrey A. Hoffman, and Jaal B. Ghandhi, “Spray Combustion and Emissions in a Direct-Injection Two Stroke Engine with Wall-Stabilization of an Air-Assisted Spray”, SAE Paper 970360, Society of Automotive Engineers, Warrendale, PA, 1997.

Syvertsen, Marc L, Jay K. Martin, Jeffrey A. Hoffman, “Injection and Ignition Effects on Two-Stroke Direct-Injection Emissions and Efficiency”, SAE Paper 961803, SAE 1996 transactions, Vol. 105, Journal of Engines, Section 3, pg. 1823-1838. Society of Automotive Engineers, Warrendale, PA.

Westrate, Barbara, Ed Itano, Jeffrey A. Hoffman, and Jay K. Martin, “The Development of Diagnostics and Testing Methods for the Characterization of Carburetor Exit Flow Conditions”, SAE Paper 952078, SAE 1995 Transactions, Vol 104, Journal of Commercial Vehicles, Section 2, pg. 85-102, Society of Automotive Engineers, Warrendale, PA.

Patents

Hoffman J. A. et. al., (2013). Insertion Instrument for a Spinal Fixation System, US Patent No.: US 8,512,344 B2, US Patent Trademark Office.

Hoffman J. A., et. al., (2012). Spinal Rod Reducer and Cap Insertion Apparatus, US Patent No.: US 8,308,774 B2, US Patent Trademark Office.

White J. et. al. (2011). Spinal Rod and Screw Securing Apparatus and Method, US Patent No.: US 2011/0202096 A1, US Patent and Trademark Office.

Hochschuler S. H., et. al. (2011). Intervertebral Implant Devices and Methods for Insertion Thereof, US Patent No.: US 2011/0118788 A1, US Patent and Trademark Office.

Sandstrom J. P., Hoffman J.A., Vlahos J. D. (2011). Low Friction Rod Persuader, US Patent No.: US 2011/0257692 A1, US Patent Trademark Office.

Kilpela, T.S., Hoffman J.A., Janowski B.P. (2010). Implant for Deploying Bone Graft Material and Methods Thereof, US Patent No: US2010/0042216 A1, US Patent and Trademark Office.

Hoffman J. A., Berrevoets G. A., Kakuk M. D. (2009). Insertion Instrument for a Spinal Fixation System, US Patent No.: US 2009/0234395 A1, US Patent Trademark Office.

Hoffman J. A., Berrevoets G. A., Norman M., (2008). Locking Instrument for Implantable Fixation Device, US Patent No.: US 2008/0195155 A1, US Patent Trademark Office.

Hoffman J. A., Martin J. K., (1997). Transient Spray Patternator, US Patent No.: 5,686,989, US Patent Trademark Office.