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plastic tubing vacuum rating formula | |||
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Posted by: ghamgaha ® 03/20/2006, 17:12:13 Author Profile eMail author Edit |
I'M TRYING TO FIND A FORMULA FOR THE MAXIMUM VACUUM A SPECIFIC PLASTIC TUBE CAN WITHSTAND BEFORE IT COLLAPSES. I WOULD LIKE TO BE ABLE TO INPUT THE CHARATERISTICS OF THE PLASTIC AND TUBE SIZE. IF ANYONE KNOWS OF SUCH A FORMULA IT WOULD BE GREATLY APPRECIATED. THANKS GARY |
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Re: plastic tubing vacuum rating formula | |||
Re: plastic tubing vacuum rating formula -- ghamgaha | Post Reply | Top of thread | Forum |
Posted by: zekeman ® 03/21/2006, 22:27:19 Author Profile eMail author Edit |
First find out the compressive strength, s and then formula
pd/2t=s Then solving for p, p=2ts/d where;
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Re: plastic tubing vacuum rating formula | |||
Re: Re: plastic tubing vacuum rating formula -- zekeman | Post Reply | Top of thread | Forum |
Posted by: zekeman ® 03/21/2006, 22:32:35 Author Profile eMail author Edit |
Please note in the above, that p is the differential pressure between the outside and inside of tube. If the outside is atmosheric, then
p=14.7-pvac |
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Re: plastic tubing vacuum rating formula | |||
Re: Re: plastic tubing vacuum rating formula -- zekeman | Post Reply | Top of thread | Forum |
Posted by: ghamgaha ® 03/23/2006, 10:05:16 Author Profile eMail author Edit |
THANKS FOR THE HELP.
I THOUGHT THERE HAD TO BE A COMPRESSIVE FACTOR INVOLVED. IF IT WOULDN'T BE TO MUCH TROUBLE, DO YOU HAPPEN TO HAVE THE NAME OF THE TEXT YOU HAD THIS FORMULA IN? I WOULD REALLY LIKE TO GET SOME BACKGROUND ON THIS. THANKS AGAIN FOR THE HELP!!! GARY |
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Re: plastic tubing vacuum rating formula | |||
Re: Re: plastic tubing vacuum rating formula -- ghamgaha | Post Reply | Top of thread | Forum |
Posted by: comp ® 03/26/2006, 06:45:25 Author Profile eMail author Edit |
waiting to hear |
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