Hi, have you compared the dielectric number between expanded polystyrene and rigid polystyrene? I made a table top from a sandwich of 1.5 inch expanded polystyrene between 1/4 inch rigid polystyrene sheets. Good mechanical rigidity and a solid surface for the EUT. -David G From: Bill Owsley [mailto:[email protected]] Sent: Friday, March 28, 2014 7:38 PM To: [email protected] Subject: Re: [PSES] Foam table for EMC site
most any local building supply retailer can provide a several types of foam in all sorts of thicknesses. Get a mechanical engineer to look at the supplies and design a table whatever foam he chooses. We used big blocks of 'Styrofoam' and 2 inch thick sheets of packing foam cut to form an break down table. The Styrofoam, we wrapped in a shrink wrap film to help stabilize it. Other low density foam will work. The dielectric number for the bulk solid material does not apply when foamed to a low density. I have measured it. ps. to mention the obvious, don't use the metallized stuff. On Friday, March 28, 2014 7:57 PM, T.Sato <[email protected]<mailto:[email protected]>> wrote: On Fri, 28 Mar 2014 14:42:52 +0000, "Sundstrom, Mike" <[email protected]<mailto:[email protected]>> wrote: > I've been asked to find a supply that can provide the closed cell foam > material used in a EMC setup as a table for OATS or inside a chamber. > > Does anyone have any contacts? ETS Lindgren, and possibly some other manufacturers, supplis low dielectric tables which seems MOSTLY made from foam material: http://www.ets-lindgren.com/LDT We made our test table from cheaper and readily available Styrofoam boards. Regards, Tom -- Tomonori Sato <[email protected]<mailto:[email protected]>> URL: http://homepage3.nifty.com/tsato/ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]<mailto:[email protected]>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher: <[email protected]<mailto:[email protected]>> David Heald: <[email protected]<mailto:[email protected]>> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]<mailto:[email protected]>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)<http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
