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?