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We are manufacturing a thin skin (1mm) L-band antenna (1.5GHz)from E-glass epoxy. Ons of the problems we are facing is that there seems to be moisture migration through the skin, which to the antenna guys is a problem. This seems to occur at molecular level, as the void content of the laminate...

Dear reader, We are currently manufacturing quite large panels for a scientific base from the following materials: Skins : E-glass/phenolic (Cellobond 2027), 6mm thick Core : Polyurethane foam, 120mm thick The sandwhich panels are typically 7m long, 2.4m wide and 120mm thick. They are trimmed...

Hi Mohr, Thanks. There right before my eyes in the manual. If all else fails, read the manual! Regards HeinBau

Hi Mohr, Can you please be a little more specific on the title and author of the book, as I do not have it. I have quite a few other books in the field, but nowhere in them or the Ansys theory manual do I find anything on the matter. Regards HeinBau

In the older versions of Ansys one used the minor poisson's ratio NUXY etc when giving orthotropic material proerties. In version 6 the major poisson's ratio PRXY is required. What is the definition of PRXY, and what is the conversion to NUXY. Regards

Can anybody shed some light on the EMI properties of typical carbon/epoxy laminates. Is additional screening such as flame/arc spraying, or nickel coated carbon veils or metallic meshes really required, or is the carbon laminate sufficient for EMI screening. Additionally, should a carbon...

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ANSYS finite element package has solid composite elements over and above the normal laminated shell elements. Regards