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How would I determine the pressure limits of an acrylic tube of arbitrary size and thickness? Answered

I am creating a vacuum chamber with an acrylic tube that is 4 inches in diameter and 1/4 of an inch thick. How would I determine the pressure limits of my pipe? Is there a formula for pipes of arbitrary size and materials? Much thanks.

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Toga_Dan (author)2017-02-15

if you had 100% vacuum, there would be a max 15psi external P.

My experience suggests you'll be OK, assuming no scratches, etc. Also, if it does fail, it is less likely to be dangerous than if it was a pressure vessel. How you seal the ends is another question. Fittings? Steel plate?

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steveastrouk (author)2017-02-14

There are formulae. Its critical to them that your tube is perfectly round, and that the ends are held well.

Look for "collapse pressure" From a brief look 4" acrylic, provided its not too long, should hold up, at room temperature

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