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  1. jrt20839

    Simple Air Permeation Experiment

    I am working on an air permeation experiment to show the difference in air permeation between three fabrics. If you use lab testing equipment, you get air perm values of 221 CFM, 86.6 CFM, and 35.6 CFM respectively. I tried a set-up with a ping pong ball in a clear tube and a fan blowing up on...

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