Compressive fatigue and energy test apparatus and method for testing clutch plate friction materials
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United States of America Patent
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Nov 27, 2007
Grant Date -
Mar 29, 2007
app pub date -
Sep 23, 2005
filing date -
Sep 23, 2005
priority date (Note) -
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Abstract
The present invention presents a means for simultaneously testing the compressive strength and measuring the thermal energy dissipated by a given friction material during slip. The testing apparatus includes a rotatable flywheel that rotates a transmission reaction plate to simulate a typical reaction plate in a vehicle transmission assembly. A plurality of test samples selectively interact with the reaction plate while being elevated by hydraulically actuated cylinders. The thermal energy dissipated between the reaction plate and each test sample is measured for each test sample. A method for accomplishing the same for a bill-of-design reference is also included.
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