Stefan Kloppenborg

(720) 989-8124 • stefan.kloppenborg@gmail.com

PROFILE As a mechanical engineer who is passionate about innovation, I am looking for anopportunity to contribute to the development of new technologies. My wide range ofskills and effective time management allow me to take on a wide variety of simulta-neous projects. Drawing on my past experience and drive to continue learning, I canquickly and continually add value to an engineering team.

EXPERIENCE Technical Director, Software: OptimumG, LLC September 2008-Present• Lead a team of three in the development of a tire data analysis package• Organized vehicle handling tests with advanced data acquisition systems• Developed vehicle simulation software and analysis techniques• Met with potential clients and identified project goals based on their requests• Attended laboratory tire tests, analyzed tire data and created tire models• Wrote software for an embedded system for real-time estimation of tire forces• Presented new techniques in tire and vehicle analysis at several conferences

Mechanical Designer: Hymotion/A123 Systems Summers of 2007 and 2008• Designed chassis for hybrid-electric vehicle battery packs using Pro/ENGINEER• Preformed vibration analysis of battery packs using MSC.NASTRAN• Worked closely with vendors during production of prototype units

Junior Mechanical Engineer: Flex|N|Gate Internship: May 2006-April 2007• Organized laboratory testing programs for automotive parking brakes and hinges

including static and durability testing and vehicle data-acquisition• Performed manufacturing trials to investigate manufacturing-related failures• Aided in the development of an electric parking brake actuator• Acted as the primary contact with the Ford-Oakville Assembly Plant

Engineering Intern: Astra Aero Summer of 2005• Worked in a small team to redesign a composite aero-structure• Aided in optimizing the vibration characteristics and meeting the weight target

of the structure while meeting manufacturing-driven goals• Used tools such as Pro/Mechanica for FEA of the structure and Pro/Engineer

to produce solid models, drawings and to design tooling

Owner and Chief Carpenter: KloppCo Carpentry Part-time: 2002-2004• Supervised and assisted two employees in the construction of decks, fences,

patios and flooring• Managed finances, billing, marketing and procurement of material

VOLUNTEERAND EXTRA-CARRICULAR

Technical Director: University of Toronto Formula SAE July 2007-2008• Responsible for coordinating all design and manufacturing activities of a 25-

student team which designs and builds a formula-style racecar• Collaborated with the business leader to develop and maintain the budget• Worked with another student to prepare a structural equivalence report to show

that a carbon fibre monocoque chassis design met all safety requirements

Manufacturing Director: University of Toronto Formula SAE 2005-2007• Responsible for all team contact with manufacturing-related sponsors including

machine shops, material suppliers and tooling suppliers• Implemented QA programs such as dye penetrant inspection of critical parts

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• Found new sponsorship valued at 10% of the team’s annual budget

Drivetrain Department Head: University of Toronto Formula SAE 2004-2008• Managed a team a three to design, manufacture and maintain racecar drivetrain• Designed and built a custom, on-track adjustable differential• Wrote a vehicle dynamics model to determine the effects of the differential• Aided in track testing and set-up of the car• Developed analysis tools to estimate dynamic (shock) loading of driveline parts• Preformed mechanical and material testing to benchmark existing designs, val-

idate new designs and determine causes of previous design failures• Applied tools such as CAD, linear and non-linear FEA and design standards

Technology Chair: Dave Johnson and Tom Smith Campaigns 2003 and 2004• In charge of all computer and telecom systems for two political campaigns• Managed access to the party’s proprietary and confidential voter database

Machinist: University of Toronto Formula SAE 2003-2004• Aided in the construction of a racecar by fabricating, machining and welding

various components

EDUCATION BASc, Mechanical Engineering University of Toronto, completed May 2008

Machine Shop Training: Basic & Advanced, George Brown College, 2007

Vehicle Dynamics & Data Acquisition 3-Day Seminar OptimumG, 2005 and 2007

Space Robotics 10 Day Course daVinci Engineering Enrichment Program, 2003

SKILLS CAD: Pro/Engineer and Solid EdgeFEA: MSC.Nastran and Pro/MechanicaData Analysis: imc Famos, AIM Race Studio and MoTeC i2Mathematical Software: Matlab and MathCadProgramming Languages: C/C++, C#, VB.NET, Matlab and AssemblyElectronics: Analog circuits, micro-controllers, CAN-bus and PCB layoutGeneral: MS Office, MS Windows, Linux, TortoiseSVN, LaTex

PUBLICATIONS • S. Kloppenborg, C. Meissen, “How to Achieve Faster Laps with Tyre Data.”RaceTech Magazine, March 2010.

• S. Kloppenborg, C. Meissen, “Testing Programme, No You’re Not Dreaming.”RaceTech Magazine, February 2010.

• S. Kloppenborg, C. Meissen, “Get More From Your Tyre Data.” RaceTechMagazine, January 2010.

PUBLIC PRE-SENTATIONSAND SEMINARS

• Tire modeling seminar, Oreste Berta Seminar, Alta Gracia, Argentina, 2010• Getting more from your tire data with models and advanced visualization, Tire

Technology Expo, Koln, Germany, 2010• Tire testing: no lab required, Automotive Testing Expo, Novi, MI, 2009• Data analysis seminar, OptimumG/ATS/ARAI Seminar, Pune, India, 2009• Efficient use of professional sensors in tire and car and tire performance measurement

and comparison, Vehicle Dynamics Expo, Stuttgart, Germany, 2009• CAN Bus Use in Vehicle Tests, Kistler GmbH Seminar, Concord, NC, 2009

INTERESTS Climbing, running, telemark skiing, playing the violin, wood working, and cooking

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Selected Samples of Professional Work

OptimumG

Figure 1: At OptimumG, I was involved in instrumenting several vehicles, both racecars and production cars, using a multitude of sensors including wheel force trans-ducers, slip angle sensors and inertial platforms.

Figure 2: I lead the team that developed a tire force and moment data visualizationand modeling tool. I was also involved in several tire testing projects, both rig testingin a laboratory and on-vehicle testing on a proving ground.

Figure 3: I have given a number of public seminars and written several articlespublished in magazines and online.

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Formula SAE

Figure 4: During my time on the University of Toronto Formula SAE team, I designed,manufactured and tested an adjustable limited slip differential. This project alsoserved as my BASc Thesis topic.

Figure 5: I wrote several simulation programs in Matlab to investigate handling, ride,tire behavior and shock loading.

Figure 6: I ran a considerable amount of FEA while designing parts of the For-mula SAE car. This included analysis of complex mechanical assemblies (left) andcomposite structures (right).

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Figure 7: I gained hands-on experience while on the Formula SAE team, includinglayup of composite parts, machining of metal parts, welding and assembly.

Figure 8: Adaptive suspension controller circuit that I designed

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Hymotion / A123Systems

Figure 9: A Toyota Prius fitted with a Hymotion PHEV conversion kit, which Ihelped develop at A123-Systems

Figure 10: I worked on mechanical design, FEA and thermal management of batterypacks while at A123 Systems.

Astra Aero

Figure 11: The all composite aerostructure that I helped redesign at Astra Aero inflight.

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