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How big should a hydrophobic vent opening be for outdoor application
I've got a water tight (IP-68) plastic communications device with an internal volume of about 50 in^3. It is vented through a hydrophobic membrane for two reasons. The first is to prevent pressure build up due to changes in temperature. The second is to allow humidity fluctuations to happen...- McCue
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- Replies: 3
- Forum: Electronics Packaging engineering
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Looking for a good reference for truss / frame design
I'm beginning a design of a large (20' x 10' x 5') frame composed of welded box tubing. I'm wondering if anyone can recommend a good reference for design practices for this type of project. I'm looking for information on structural analysis of the frame members and more specifically the welded...- McCue
- Thread
- Replies: 5
- Forum: Welding, Bonding & Fastener engineering
