Material sample for testing biaxial stress conditions
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United States of America Patent
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Dec 10, 2013
Grant Date -
Jun 16, 2011
app pub date -
Aug 1, 2009
filing date -
Aug 14, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
Described is a material sample for testing material properties under biaxial load as well as a method therefor. The material sample has a circular disk shape and, for rotation about the center line thereof, is provided with an integrally formed hub. The edge of the material sample and the hub are thicker than the ring section of the material sample located in between. In one embodiment, the ring section is designed with an annular concave fillet concentric to the hub and the concave fillet may extend from the edge to the hub and have a continuous curvature over its width. In the method, it is rotated about its center line at least at 100,000 rpm, preferably at 150,000 rpm±10,000 rpm.
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