Quote:
Originally Posted by ttldomination
The most common/successful method was probably to weigh down the rough surface and then use a force gauge that provided a force vs. time reading. Then, from rest, slowly pull. At a certain point, the rough surface+weights will start moving. At that same point, your force will peak, and that becomes the maximum static friction (Fs). From there, it's a simple Fs = Fn * mu calculation. Granted this did require more technical equipment, it also seemed to provide much more consistent results.
- Sunny G.
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This test has flaws also; the "puller" is usually not able to provide a pull of constant velocity. If there is any acceleration or change in acceleration, the waters get muddy quickly, and the data can be flawed.
We found that the tilt test is much more consistent for FRC applications as described.
-John