JASON GEATHERS. 171 Moultrie Street, Charleston, SC (843) EDUCATION

Transcription

1 JASON GEATHERS 171 Moultrie Street, Charleston, SC (843) EDUCATION Doctor of Philosophy in Mechanical Engineering August 2016 Advisors: J. Wayne Jones, Samantha H. Daly Master of Science in Engineering in Mechanical Engineering April 2012 Concentration: Mechanics and Materials Bachelor of Science in Engineering in Mechanical Engineering December 2009 International Study: Nagoya University Summer Intensive Automotive Program, Nagoya, Japan Morehouse College, Atlanta, GA Bachelor of Science in Applied Physics December 2009 Minor: Mathematics Atlanta University Center Dual Degree Engineering Program RESEARCH INTERESTS Multi-scale mechanics of materials, deformation mechanisms, fatigue, fracture, structural materials, small-scale characterization by advanced electron microscopy, metallic alloys RESEARCH EXPERIENCE Graduate Research Assistant (Advisors: Profs. Sam Daly and J. Wayne Jones) Sept 2010 Present Investigating the role of microstructure in the very high cycle fatigue behavior of structural materials, with a focus on titanium alloys Developing novel experimental instrumentation and methodology for in-situ high resolution strain mapping at the micro-scale during ultrasonic fatigue Researching environmental effects on small fatigue crack growth mechanisms in structural materials in the very high cycle fatigue regime Exploring microstructural barrier and small fatigue crack tip interactions using advanced digital image correlation techniques towards the improvement of life prediction models Undergraduate Research Assistant Sept 2009 Feb 2010 Examined the low cycle fatigue behavior of magnesium alloy AZ91, including conducting and analyzing fatigue experiments Designed and developed experimental procedures to characterize mechanisms controlling accumulated plastic deformation at surface pores in cast magnesium alloys under fatigue loading University of Southern California, Los Angeles, CA Undergraduate Research Assistant June 2008 Aug 2008 Designed and created a device to hydrostatically and pneumatically pressure test a MEMS pressure sensor for detecting focal pressure in the retina Assisted in advancement of experimental methodology to test the strain measuring capabilities of a carbon based pressure sensor array intended for measuring tissue strain in burn victims

2 JASON GEATHERS PAGE 2 OF 5 General Electric- Energy, Greenville, SC Design Engineer Intern May 2007 Aug 2007 Worked with compliance and European Union directives on a global team Developed fluid mechanics calculations for standard ASME piping and tubing sizes Detailed hydrostatic and pneumatic testing procedures for gas turbine piping arrangements Worked in environment with rapidly changing priorities and deadlines General Electric- Energy, Greenville, SC Manufacturing Engineer Intern May 2006 Aug 2006 Implemented Six Sigma related project to reduce rework cost and decrease gas turbine blade defects Completed and drove closure on 20 safety and ergonomic corrective actions Constructed operator workstation method for dovetail relief cut Modified 6B 3 rd Stage Bucket Z-form Fixture to prevent improper loading of part HONORS AND AWARDS Overall Best of Show, TMS Student Poster Competition March st Place, Structural Materials Division, TMS Student Poster Competition March st Place, Society of Engineering Science Student Competition October st Place, Society of Experimental Mechanics International Student Competition June nd Place, Engineering Graduate Symposium Poster Award, University of Michigan January 2013 Rackham Merit Fellowship, University of Michigan January 2010 January 2014 Scholar Power PhD Candidate Achievement Award January 2013 NSF Graduate Fellowship Honorable Mention, University of Michigan January 2010 REFEREED JOURNAL PUBLICATIONS Geathers J, Torbet CJ, Jones JW, Daly S. Examination of Small Fatigue Crack-tip Microstructural Interactions in a Titanium Alloy at Very Long Lifetimes. To be submitted March Geathers J, Torbet CJ, Jones JW, Daly S. Mechanism for Environmentally Assisted Small Fatigue Crack Growth during Ultrasonic Fatigue of Ti-6242S. To be submitted February (Available upon request) Geathers J, Torbet CJ, Jones JW, Daly S. Investigating Environmental Effects on Small Fatigue Crack Growth in Ti-6242S Using Combined Ultrasonic Fatigue and Scanning Electron Microscopy. International Journal of Fatigue, Vol. 70: , DOI: CONFERENCE PROCEEDINGS Geathers J, Jones JW, Daly S. Investigating the Role of Microstructure on the VHCF Behavior of Ti-6242S, Micromechanics of Fracture and Fatigue Symposium Proceedings, Society of Experimental Mechanics Annual Conference & Exposition, Gutierrez CA, Cho A, Geathers J, Yu L, Abram T, Meng E. An Implantable Low-Cost Multilayer Screen-Printed Carbon Thick- Film Strain Sensor, Proceedings of 2009 International Conference on Microtechnologies in Medicine and Biology.

3 JASON GEATHERS PAGE 3 OF 5 TEACHING AND MENTORING EXPERIENCE The Citadel, The Military College of South Carolina, Charleston, SC Assistant Professor (Tenure Track), Department of Mechanical Engineering August 2016 Present Teaching lectures and administering laboratory experiments on the principles of measurements and instrumentation Teaching upper level undergraduate courses on manufacturing and machine design covering topics such as static and fatigue failure of machine parts, and designing shafts, bearings, and gears Managing seniors in the designing and fabrication of capstone senior design projects Graduate Student Instructor, Mechanical Behavior of Materials (ME382), Undergraduate Course Jan 2016 May 2016 Taught lectures on stress analysis, multiaxial stresses, and elastic properties of materials Designed multi-section test problems for midterm examination Provided office hours and problem solving sessions to help students understand course topics and achieve course objectives Guest Lecturer, Theory of Plasticity (ME519), Graduate Course September 2015 Taught lectures on metallic crystallography and dislocations covering nomenclature and classification of crystalline structures, types and sources of dislocations, plastic deformation, and slip Guest Lecturer, Mechanical Behavior of Materials (ME382), Undergraduate Course October 2012 Taught lectures on kinetics covering concepts of Gibbs free energy, equilibrium, diffusion, and phase changes Undergraduate Mentor January 2010 January 2012 Mentored (4) undergraduate students in the responsible conduct of research, using the scientific method, and developing investigative and technical skills ORAL PRESENTATIONS Studying Small Fatigue Crack Growth Behavior in Ti-6242S Using Ultrasonic Fatigue and 2015 Scanning Electron Microscopy, The Minerals, Metals, and Materials Society Conference, Orlando, FL (INVITED) Investigating Microstructural and Environmental Effects on VHCF Crack Formation in Ti-6242S 2014 Plenary presentation, 6 th International Conference on Very High Cycle Fatigue, Chengdu, China (INVITED) Investigating Small Fatigue Crack Growth in Ti-6242S Using In-situ Ultrasonic Fatigue in an ESEM 2014 Air Force Office of Scientific Research Project Review, Kirtland Air Force Base, Albuquerque, NM Examining the Role of Microstructure and Environment on Small Fatigue Crack Growth Behavior in Ti-6242S 2014 Wright Patterson Air Force Base, Dayton, OH (INVITED) Investigating Environmental and Microstructural Effects on Small Fatigue Crack Growth Mechanisms in Ti-6242S 2014 Microscale and Microstructural Effects Symposium, 51st Annual Technical Meeting of the Society of Engineering, West Lafayette, IN

4 JASON GEATHERS PAGE 4 OF 5 Investigating Microstructural and Environmental Effects on VHCF Crack Formation in Ti-6242S 2014 International Student Paper and Presentation Competition, Society of Experimental Mechanics Conference, Greenville, SC (1 st PLACE) Investigating Small Fatigue Crack Growth in Ti-6242S Using In-situ UF-ESEM 2014 A Lifetime of Experience with Titanium Alloys: An SMD Symposium in Honor of Jim Williams, Mike Loretto and Rod Boyer, The Minerals, Metals, and Materials Society Conference, San Diego, CA (INVITED) Experimental Investigations of Full-Field Deformation at the Microstructural Length Scale 2013 Deformation and Transitions at Grain Boundaries III, Materials Science and Technology Conference, Montreal, Quebec (INVITED) Investigating Short Fatigue Crack Growth in Ti-6242S Using In-situ UF-ESEM 2013 Titanium and Titanium Alloys Symposium, Materials Science and Technology Conference, Montreal, Quebec Investigating the Role of Microstructure on the VHCF Behavior of Structural Materials 2013 Micromechanics of Fracture and Fatigue Symposium, Society of Experimental Mechanics Conference, Lombard, IL Combining DIC and Ultrasonic Fatigue to Investigate the VHCF Behavior of Structural Materials 2013 Fatigue in Materials Symposium, The Minerals, Metals, and Materials Society Conference, San Antonio, TX A Method for In Situ Capture of Cyclic Strain Accumulation during Ultrasonic Fatigue 2012 Ultrasonic Fatigue of Advanced Materials and Systems Symposium, The Minerals, Metals, and Materials Society Conference, Orlando, FL Investigation of Very High Cycle Fatigue Behavior Using Micro-scale Digital Image Correlation 2011 Fatigue and Microstructure Symposium, Materials Science and Technology Conference, Columbus, OH POSTERS Investigating Small Fatigue Crack Growth Behavior in Ti-6242S Using Ultrasonic Fatigue and 2015 Scanning Electron Microscopy The Minerals, Metals, and Materials Society Conference, Orlando, FL (1 st PLACE) Investigating Environmental and Microstructural Effects on Small Fatigue Crack Growth Mechanisms in Ti-6242S st Annual Technical Meeting of the Society of Engineering Science, West Lafayette, IN (1 st PLACE) Examining Environmental and Microstructural Effects on Small Fatigue Crack Growth Mechanisms in Ti-6242S 2014 Engineering Graduate Symposium, Ann Arbor, MI Novel Techniques for Studying the Role of Microstructural Variation on Fatigue Crack Formation in 2013 Ti-6Al-2Sn-4Zr-2Mo Engineering Graduate Symposium, Ann Arbor, MI (2 nd PLACE) Using Ultrasonic Fatigue Techniques to Study Fatigue Crack Growth Behavior in Ni Alliance for Graduate Education and the Professoriate Symposium, Ann Arbor, MI

5 JASON GEATHERS PAGE 5 OF 5 PROFESSIONAL AFFILIATIONS American Society for Engineering Education Society of Experimental Mechanics SAE International The Minerals, Metals, and Materials Society American Society for Metals, International COMPUTER SKILLS Platforms: Windows Vista/7/10, Mac OS Languages: MATLAB, LabView, Visual Basic Applications: Microsoft Office, NX CAD, Solidworks 3D CAD, MSC Nastran, Adobe Photoshop OTHER TECHNICAL SKILLS Machining Experience: CNC/manual mill, manual lathe, drill press, bandsaw Materials Characterization: mechanical grinding and polishing, electropolishing, optical microscopy, scanning electron microscopy, FIB, EBSD/EDS, Auger nanoprobe, XRD Materials Testing: MTS servo-hydraulic test frames, ultrasonic fatigue, in-sem micro-tensile testing, fractography and failure analysis, advanced digital image correlation