Thermal Interface Material Tester

1. Thermal Interface Material Tester Team Members: Joe Henry Andy Hale Brian Francis Nick Tenorio Industry Sponsor: Tektronix Industry Contact: Chris Coleman Academic Advisor: Gerry Recktenwald

2. Introduction • TIMs! • Aid heat transfer for electronic devices • Project • Current standard test method inadequate • Transient testing method is better • Test equipment • Controlled environment

4. Aluminum Pucks Passive Puck Surface Finish of 0.4 microns (Taken from ASTM Standard D5470-01) Active Puck Chamber Active Puck O-Ring Gland

5. Ultem Manifold • Thermally Isolates active puck • Guides incoming/outgoing water • Provides the other half of the seal

6. Active Puck and Manifold Assembly Plumbing Fittings Threaded Inserts

8. Plumbing • Hot & Cold Temps • Circulating Loops • Solenoid Valves • Introduce electrical

9. Plumbing • Hot water @ 80 deg C • Cold Water @ 10 deg C

10. Plumbing • Temperature Switching • Circulating Loops

11. Structure • Force Application System • Puck Alignment • Super Structure

12. Force Application System • Spherical End Factor • - Satisfies Parallelism

14. Alignment System Guide Rod • Guide Rods - Low friction - Low heat conduction - Pucks are centered • Puck Access - Mid Plate Slots - Various Sizes - Cam Lever Teflon Rail Actuating Shaft

15. Alignment System Guide Slots Cam Lever Guide Rods

16. Safety Factor – 2.3 Total Deformation – 0.03 in

17. Pneumatics • Pneumatic system function • User defined pressure • Pressure measurement • Pressure held constant

18. Pneumatic System User Interface Pressure Gage Pressure Regulator (Pressure Transducer Behind Panel)

19. Pneumatics • Constant Pressure • Low friction air cylinder • Accumulator

20. Pneumatics • Low Friction Air Cylinder • Glass Cylinder • Graphite Piston • Grams of friction Picture from www.airpot.com

21. Pneumatics • Accumulator • Pressure vessel • Adds volume to system • Helps keep pressure constant Picture from www.bimba.com

22. Pneumatics

23. Questions?