Quote:
Originally Posted by Matt Gardner
I figure these need to be strong and impact-resistant just because they are always outside...
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If those signs can stand up to the occasional flying robot, they should be able work as ramp material?
I agree, you do need some input from someone who has played with the material, or used it on a robot or something. Since it's not a structral material, there seems to be no or very little structural info about it available.
If you can estimate the thickness of the aluminum layers, you could calculate the moment of inertia and estimate the bending strength under static loading conditions. As an example, I just calculated the stress due to bending, assuming a 6" wide ramp, 3 feet long, 100 lbs load at the center. Material .25" thick, each aluminum face 0.020" thick. The maximum bending stress would be about 70,000 psi, which is about four times the yield stress of soft aluminum, and about twice the yield stress of typical heat treated aluminum alloys.
So, you would need to provide support for the ramp about every foot of length to make it strong enough to adequately support a robot....is my guess....