I have a composite (orthotropic) tape material with nearly fully populated properties over a range of temperatures. I use this to make an effective laminate (OK, actually two: a 0/90 and a pseudoisotropic). All the properties that are populated in the composite are populated in the effective laminates
![Grin ;D](//hypersizer.com/forum/Smileys/akyhne/grin.gif)
, except for thermal conductivity. K is blank.
![Huh? ???](//hypersizer.com/forum/Smileys/akyhne/huh.gif)
Any idea why?