and layer 413 depicts the ta 301 solimide densified ht polyimide foam backing a composite panel was prepared by adhesively bonding ibena u00ae profire u00ae fabric made of nomex u00ae n 104 yarn in the warp and weft directions fd 430 u00b1 10 fd 10 cm warp thread density 320 u00b1 10 fd 10 cm weft thread density as measured by din en 1049 2 woven in a twill 3 1 weave and having a total mass as measured by iso 3801 of 185 u00b1 5 g m 2 to a foam backing to a ta 301 solimide densified ht polyimide foam backing having a density of about 5 lbs ft 3 with a bostik u00ae 10 321 5 mil thick sheet of thermoplastic adhesive the bonded composite was moistened with water and then carved using a dukane ultrasonics handheld ultrasonic assembly system operating at about 20 khz a tip having a knurled tilted face in relation to the surface to be carved was placed on the horn of the ultrasonic assembly system as seen in fig1 c amp 1 d and used to prepare a three dimensional carving the carved surface was then painted using marie 39 s u2122 chinese painting color a jetflex u00ae polyurethane sealing coat was placed on the carved and colored surface and the coated surface was dried using fanned ambient air the characteristics of the composite including weight heat release rate test results smoke.