The George W. Woodruff School of Mechanical Engineering at Georgia Tech

My Background Woodruff School Overview Mechanical Engineering Overview Student Activities –Student Organizations –Academic and Work Opportunities Research Senior Design Projects Student and Alumni Profiles Agenda

Kristi Mehaffey –Allentown, PA BS Mechanical Engineering –Georgia Tech, 1994 MS Mechanical Engineering –Clemson University, 2000 Work Experience –10 years of industry experience as a Mechanical Engineer –Currently an Academic Advisor in the Mechanical Engineering department at GT Who I Am

Making fun Halloween costumes Georgia Tech Football My family Travelling What I Like

What is Mechanical Engineering?

Which one is something mechanical engineers do? a.Work at Coca-Cola and design bottling equipment to use for bottling Coke. b.Work at NASA and be a part of designing the replacement for the Space Shuttle, known as Project Constellation. c.Work at Michelin and design the next version of the air-less tire. d.Work at Ford and help design the suspension on the next generation Ford Mustang. e.Designing new wind turbines to turn wind capacity into renewable energy. f.Performing tissue research to build an artificial blood vessel that could be implemented into the human body. g.Work at a robotics company designing humanoid limbs. h.Design the largest ship, use to transport things like oil rigs. Mechanical Engineering Is…

Much more than working with cars!!! Even the best cars!

Finding creative solutions to problems! Perhaps the broadest of all the engineering disciplines. Working with motion, energy, forces, and materials. Concerned with analysis, design, manufacture and operation of: –Energy –Defense –Environment –Health & Bio –Manufacturing –Transportation Mechanical Engineering Is… SourceL: “Scientists discover the world that exists; engineers create the world that never was.” -Theodore Von Karman

Design –Product Design –Machine Design –System Design Manufacturing, Quality and Process Development Maintenance and Operations Research and Development What are general things ME’s do? Project Management Testing Sales Technical Sales Other –Law –Management –Business –Medical Schools

Some Examples of Design –Machines that manufacture and package all varieties of products –Rotating equipment - pumps, compressors, blowers, turbomachinery –Internal combustion engines –Storage tanks, piping systems and pressure vessels - reactors, heat exchangers, boilers –Sports equipment, consumer goods and products (everything from golf balls to soda cans to roller coasters) –Material handling equipment - conveyers, robots, production lines –Vehicles - cars, trucks, heavy equipment, buses, aircraft, ships –Electric power generation equipment –Oil well drilling and extraction equipment –Nearly every man made object that you can see has been worked on by a Mechanical Engineer… What can Mechanical Engineers do?

Automotive & OEM Suppliers Construction Equipment Construction Companies Ship & Railroad Companies Airplane Manufacturing Power Generation / Nuclear Alternative Fuel / Energy Utility Companies Oil and Gas Companies Chemical Companies Pharmaceutical &Health Care Biomedical Sports Equipment Mfg. Computer-Aided Design Automation & Robotics What Industries Hire ME’s? Electronics Industries Appliance Manufacturers HVAC & Refrigeration Toy Manufacturing Furniture Manufacturing Paper Industry Food & Beverage Industry Telecommunications Amusement Parks National Labs Aeronautical (NASA, etc.) Government Agencies Academia (Teaching) Financial Companies Consulting Companies

My Background in Mechanical Engineering

Ford –Manufacturing Engineer (robotics) –Production Supervisor

Danfoss Fluid Power –Designed hydraulic spool valves

BP Amoco –Reliability and Maintenance Engineer

CyOptics Inc. –Equipment Design –Product Design –Process Engineering

Woodruff School Overview

Undergraduate –BSME: Mechanical Engineering –BSNRE: Nuclear & Radiological Engineering Masters –MSME: Mechanical Engineering –MSMP: Medical Physics –MSNE: Nuclear Engineering –MSBIOE: Bioengineering –MSPSE: Paper Science & Engineering Doctoral –Doctor of Philosophy (Ph.D.) Woodruff School Degrees

Research in Mechanical Engineering

Mechanical Engineering Areas of Research Acoustics and Dynamics Automation and Mechatronics Bioengineering Computer Aided Design Fluid Mechanics Heat Transfer, Combustion and Energy Systems Manufacturing Mechanics of Materials Microelectromechanical Systems (MEMS) Nuclear and Radiological Engineering Tribology

Mechanical Engineering Research ENEMY DETECTION A new sensor that measures the motion created by sound waves under water could allow the U.S. Navy to develop compact arrays to detect the presence of enemy submarines. These compact arrays would detect quiet underwater targets, while providing very clear directional information. The novel underwater sensor uses optical fibers to detect the direction from which a sound is coming under water. This directional component is an important improvement over the current technology.

Mechanical Engineering Research ACOUSTICAL STUDIES Healthcare Acoustics - The sound environment in hospitals and other medical facilities is complex and can impact occupants in a variety of ways. Some things that were evaluated: –improvement of acoustic measurement and characterization –psychological and physiological response of occupants –evaluation of acoustical treatments & noise mitigation strategies Speech Intelligibility - Speech intelligibility generally refers to how easy it is to understand speech in a built environment such as classrooms, recital halls, churches, etc. Three methods were used to calculate these metrics: –subjective performance on word list tests –measured room impulse responses –3-D computer models Classroom Acoustics - The importance of good classroom acoustics has gained increasing visibility in the last several years.

Mechanical Engineering Research MATERIALS MAY SOON AID ORTHOPEDIC SURGERY Motivation – To develop devices that may soon improve the treatment of human orthopedic conditions. Details: –The research focuses on ‘shape-memory’ polymers and alloys; solid materials that can change shape on demand. –Example: Knee Surgery. Surgeons drill tunnels in bone and then anchor tendons into those tunnels screw threads that often injure tissue. By contrast, the shape-memory polymer fits into a surgical tunnel along with the tendon, conforming around the delicate tendon to hold it in place.

Mechanical Engineering Research The Development of a Kinematic Model for a Rehabilitation Robot Patients will wear the robotic jacket and press a joystick in a prescribed way. The jacket's actuators will then be turned off, one by one, to see how the muscle movements change. This will isolate which muscles are most affected by the help of the jacket. Different muscle groups and levels of shakiness vary with each type of ailment. Ultimately the goal is to diagnose different neuromuscular ailments with this testing. There is currently no way to quantify how much a person with neuromuscular disorders shake. Shaking is the inability to modulate muscle patterns. Objective: Develop a quantifiable test for people with neuromuscular disorders.

Senior Design Projects

Problem: Current fret board manufacturing process has ~25% scrap rate. Project Objective: Find a more reliable, faster and cheaper method to manufacture fret boards for guitars. Senior Design – Case Study 1

12 Inch Radius.070 Depth Cut Multiple Scale Lengths Senior Design – Case Study 1

Results: –Removed 2 process steps from the manufacturing process. –Designed and built prototype of the newly designed machine. Senior Design – Case Study 1

Project Objective: Design a better tool for doctors to use while inserting corrective measures. Background: Spinal deformities are common –Scoliosis, Hunchback, etc –The need for deformity correction procedures exists, especially in extreme cases. Senior Design – Case Study 3

The manufacturer’s design –Medtronic Sofamor Danek Cable Tensioner and Cable Reduction Construct –Very cumbersome for the doctor to use Senior Design – Case Study 3

Redesign of tool using Mechanical Advantage –Use gears to maintain linear motion and reduce stress on hand Senior Design – Case Study 3

Precision Immobilization Technique (PIT) –PIT is the use of physical force from the police vehicle to the target vehicle with the intention to stop the target car –Problems with PIT Potential collision with bystanders Potential Roll over of the target car Design Project Objectives –Prove the PIT maneuver does not cause rollover when performed under the proper conditions –Prove the PIT maneuver is a controllable when executed properly –Compare both experimental and theoretical results Design and build an apparatus to experimentally measure the force applied from the police car onto the target car Model the PIT in MSC Adams Software

Senior Design – Case Study 3 Load Cell Clamp- on Collar Flange Mount Shaft Support & Linear Bearings Button and Solid Shaft Designed load cell to measure force during test simulation Load cell used to measure force on car Experiment VideoExperiment Video PIT simulated in MSC Adams Car Simulation Software Theoretical Video Theoretical Video

Car Type Demo Vehicle 1998 Ford Explorer 1998 Ford F Ford Taurus 1977 Ford E Isuzu Trooper Grade % Minimum Coefficient of Friction Required to Roll Over General Conclusions –Maneuver is safe, predictable and controllable under the conditions used Smooth flat road, wet and dry conditions Up to 120 mph with a low center-of- gravity vehicle –High center-of-gravity vehicles are more prone to rollover Force Theoretical and Experimental Results Rollover Theoretical Results Senior Design – Case Study 3

Alumni Profiles

Alumni Profile Shannon Kelly Spoon BSME from GT in December, 2007 NAVSEA at the Norfolk Naval Shipyard in Portsmouth, VA Recent Job Assignments Spent 3 weeks on the USS Ronald Reagan installing and modifying their hydraulic systems Worked with a ship in Guam about se- curing their crane while it was in repair Worked with a ship had an elevator that came out of the tracks and the elevator was stuck a few stories up Job Description Works on hydraulics and auxiliary machinery on aircraft carriers and amphibious assault ships. Machinery includes: aircraft elevators, weapons elevators, catapults, arresting gear, conveyor belts, the anchor windlass, and steering mechanisms.

Alumni Profile Joshua Emrich BSME in Summer 2005 Bell Helicopter in Texas Job Description Airframe designer for Armed Reconnaissance Helicopter; Designs the fuselage, tailboom, and landing gear. Use 3D CAD software (CATIA) to build 3D models of helicopter parts. Specializes in a variety of parts including: carbon fiber, fiberglass, sheet metal, castings, forgings, and machined. Best Parts of Job Using creativity to solve engineering problems. I have a lot of control on helicopter functionality, maintainability, and aesthetics. It is very rewarding to see the parts I design being installed on the helicopter. Advice to Freshman Work hard early on. Co-op. Don’t be afraid to change majors.

Activities at Georgia Tech Woodruff School Student Advisory Board (President) Freshman Activities Board GT Swimming and Diving Search Committee to find new ME School Chair ME School Undergraduate Curriculum Committee. Won a school spirit scholarship in my junior year. I would like to stress that I got involved in my major more than the school (like school-wide spirit organizations) and that that worked out best for me. Alumni Profile Alison Skala, BSME Summer 2008 Works at Medtronics Future Goals Stanford with a focus in Biomechanics. I want to invent a medical device and start a company. However, I plan to work with a medical device company first. Advice to Potential Students You don’t have to know what you want to do with the rest of your life when you're 17! Look into all your options and start out studying something as broad as you can (for example, I liked science and math and chose ME). If you want/need advice on a career choice, don't be afraid to ask someone to talk about what they do! You'll be surprised to see how nice people are if you are kind in return. Undergraduate Research at GT I worked in a tissue engineering research lab on working towards building an artificial blood vessel that could be implemented into the human body. The first part was to understand the tissues that already exist in the body (in particular, collagen) and how the tissue grows and remodels under stress & change.

Alumni Profile Chris, BSME ’06, MSME from UC Berkeley in ‘08 eSolar in Pasadena, CaliforniaeSolar Project Engineer in the Advanced Technology R & D Group You don’t have to know what you want to do with the rest of your life when you're 17! Focus on optical and thermodynamic design and analysis I use the skills I gained in my mechanical engineering courses every single day at eSolar, whether it’s doing heat transfer and thermodynamic analyses, optical design, systems analysis, prototyping, or experiments. I tend to work on all aspects of the projects, from initial conception to final field Future Plans I plan to stay here for several more years, seeing the projects I have helped create through to production. I would like to work abroad some more, potentially developing concentrating solar power projects in other countries around the world. Possibly obtain PhD.

Our Graduates Are At: Automotive : Ford, General Motors, Toyota, BMW, KIA, Honda, Elan Motorsports Tech. Energy, Oil, Gas: BP, BP Exploration (Alaska), Citgo, Schlumberger, Southern Company, Georgia Power, General Electric, Shell, Suez Energy North America, Scana, Westinghouse, Atlanta Gas & Light, Exxon-Mobil, Commercial & Consumer Products: Cooper Industries, General Mills, Clorox Company, Frito Lay, International Paper, Lexmark, Procter & Gamble, Snap-On, National Instruments, Patterson Pumps, Kimberly Clark Transportation & Construction: John Deere, Caterpillar, Kubota Tractor Corporation, Norfolk Southern, Parsons Aerospace & Defense NASA, Bell Helicopter, Lockheed Martin, Gulfstream Aerospace Corp, Rolls Royce, Northrop Grumman, Harris Corp, NAVSEA, Boeing, Advanced Armament Corp, NAVAIR Business Ernst & Young LLP, Bank of America, CarMax, Deloitte and Touche Automation and Robotics Innotec Automation, Rockwell Automation, Advanced Automation, Factory Automation, National Instruments Engineering Services & Consulting: Dean Oliver International, McKenney's Mechanical Contractors, Patterson & Dewar, Babcock & Wilcox, Jordan & Skala Engineers Inc, O'Brien & Gere, Turner Construction, Slingshot Product Dev. HVAC Trane, Underwood Air Systems, Carrier, Chemicals: Air Products, Air Liquide, Eastman Chemical Company, Dow Chemical, Environmental: Enercon Services Inc Military: Air Force, Navy, Marines, Army

Opportunities at Georgia Tech

Additional Opportunities International Experiences –Exchange Programs –Study Abroad Programs –International Program (degree designator) Professional Work Experiences –Co-op Program (degree designator) –Professional Internship Program Educational Experiences –BS/MS Program –Undergraduate Research –Minors and Certificates

Summer Study Abroad in Metz, France Summer Study Abroad in Oxford, England Summer Study Abroad in Shanghai, China Opportunities Abroad

Student Organizations

GT Motorsports GT Off Road (Mini-Baja) Wreck Racing Robo-Jackets Solar Jackets Student Organizations Competitive

Student Organizations Professional ME Organizations –American Society of Mechanical Engineers –Pi Tau Sigma (ME Honor Society) –Student Advisory Committee –Acoustical Society of America Other Popular Organizations –Mars Society at Georgia Tech –Echo Car Challenge –Engineering Students Without Borders –Society of Women Engineers –National Society of Black Engineers –National Society of Hispanic Engineers –Entrepreneur's Society –Students Organizing for Sustainability –Undergraduate Consulting Club –Many more….

Questions?