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Old November 1st 07, 01:03 AM posted to rec.aviation.homebuilt
Capt. Geoffrey Thorpe
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Posts: 790
Default Something to measure physical pressure.

"Lou" wrote in message
oups.com...


What kind of measurement would you like to see?



Well, I'm not sure how to put it. I want to see how other materials
and
combination of materials measure up to the original design. I probebly
will
stay with the original, but while I'm at this part, it would be, in my
opinion,
pointless not to venture down other paths while I can. The
measurements
don't even need to be a real measurement such as psi. As long as I can
have a comparible measurement. In other words, if it takes 50lb of
force
with a fish scale to break a certain peice of wood. I would compare
another
material with the same fish scale set up to have a comparable
measurement.
Lou


The problem is that if you want to compare two materials for a particular
application - you need to match the way you measure the strength of the
materials with the kind of loading that will be applied when they are in the
stucture.

Example - heavy fabric and thin plywood may have similar tensile strength as
measured by your fish scale, but the fabric won't work for gussets and the
plywood will.

So, before you can decide what kind of test you should use to compare, you
have to determine how the material is loaded.

--
Geoff
The Sea Hawk at Wow Way d0t Com
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