Thermal Interface Material Tester

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Presentation transcript:

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

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

Ultem Manifold Guides incoming/outgoing water 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 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?