Thermal Interface Material Tester Team Members Joe Henry
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
Introduction TIMs! – Aid heat transfer for electronic devices Project – Current standard test method inadequate – Transient testing method is better – Test equipment – Controlled environment
Aluminum Pucks Passive Puck Surface Finish of 0. 4 microns (Taken from ASTM Standard D 5470 -01) Active Puck Chamber O-Ring Gland
Ultem Manifold • Thermally Isolates active puck • Guides incoming/outgoing water • Provides the other half of the seal
Active Puck and Manifold Assembly Plumbing Fittings Threaded Inserts
Plumbing Hot & Cold Temps Circulating Loops Solenoid Valves Introduce electrical
Plumbing Hot water @ 80 deg C Cold Water @ 10 deg C
Plumbing n n Temperature Switching Circulating Loops
Structure Force Application System Puck Alignment Super Structure
Force Application System • Spherical End Factor - Satisfies Parallelism
Alignment System Guide Rods - Low friction - Low heat conduction - Pucks are centered Puck Access - Mid Plate Slots - Various Sizes - Cam Lever Teflon Rail Actuating Shaft
Alignment System Guide Slots Cam Lever Guide Rods
Safety Factor – 2. 3 Total Deformation – 0. 03 in
Pneumatics Pneumatic system function – User defined pressure – Pressure measurement – Pressure held constant
Pneumatic System User Interface Pressure Gage Pressure Regulator (Pressure Transducer Behind Panel)
Pneumatics Constant Pressure – Low friction air cylinder – Accumulator
Pneumatics Low Friction Air Cylinder – Glass Cylinder – Graphite Piston – Grams of friction Picture from www. airpot. com
Pneumatics Accumulator – Pressure vessel – Adds volume to system – Helps keep pressure constant Picture from www. bimba. com
Pneumatics
Questions?
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