diff -u -r1.1 -r1.2
--- materials.xml	12 Sep 2007 18:33:43 -0000	1.1
+++ materials.xml	3 Dec 2007 23:51:32 -0000	1.2
@@ -87,6 +87,12 @@

     <fraction n="0.65" ref="C"/>
     <fraction n="0.35" ref="Epoxy"/>
   </material>

+  
+  <material name="CarbonFiber_50D">
+    <D type="density" value="0.75" unit="g/cm3"/>
+    <fraction n="0.65" ref="C"/>
+    <fraction n="0.35" ref="Epoxy"/>
+  </material>  

 
   <material name="Rohacell31">
     <D type="density" value="0.032" unit="g/cm3"/>

@@ -95,6 +101,14 @@

     <composite n="2" ref="O"/>
     <composite n="1" ref="N"/>
   </material>

+  
+  <material name="Rohacell31_50D">
+    <D type="density" value="0.016" unit="g/cm3"/>
+    <composite n="9" ref="C"/>
+    <composite n="13" ref="H"/>
+    <composite n="2" ref="O"/>
+    <composite n="1" ref="N"/>
+  </material>  

 
   <material name="RPCGasDefault" state="gas">
     <D type="density" value="0.0037" unit="g/cm3"/>