Standard AERO Braid In Braid Programme (BIB)

Most companies create their own fillers by using UD roving and put a lot of work in twisting them with the correct number of twists.
Then the filler is placed into the preform.

Generally this type is not consistent in the number of twists and the drapability is poor.
Eurocarbon has developed a Aero grade carbon fibre filler which is consistent off the shelf. The properties will remain, despite the amount of handling.
This will provide more time to focus on more inportant positoning of important parts in your preform.

How to select the apropriate filler.

In addition to our UD filler Programme we develloped a special filler type which consists out of a fully braided solution.

If your product doesn't contain UD fibres at all, the BIB filler is the right choise. A UD filler in this case could give stresses in a non UD component.
The BIB consist out of multiple braids, braided simultaniously on a special production line with a maximum of 7 chained braiding machines.
Due to this fully braided solution, the fibres are spiralling around the filler and therefore not alligned in UD direction.

The BIB filler is rather flexible and is adaptable to different cross-sectional shapes and can be draped into curved sections quite easily.

How to select the apropriate filler cross-section.

 

First determine you surface area of the gap to be filled in your component. If you know the bending radius, table 1 can be used to determine your required surface area.

Table 1. Radius to surface area Type 1&2

Radius Area in mm2
Type 1 Type 2
3 1,93 3,86
4 3,43 6,87
5 5,37 10,73
6 7,73 15,45
7 10,52 21,03
8 13,73 27,47
9 17,38 34,77
10 21,46 42,92
11 25,97 51,93
12 30,90 61,81
13 36,27 72,54
14 42,06 84,12
 

 

 Radius Filler Type 1

   Radius Filler Type 2
 Type 2 Gusset Surface Area  Type 1 Gusset Surface Area

When the surface area is known, select the apropriate BIB filler by looking at the surface area column

Table 2. Standard Braided Aero Filler Brogramme   

 
Article number Ø in mm Grams / meter Cross-section  area in mm2 at 50 Volume %
AERO BIB 2001 2 3,2 3.6
AERO BIB 2002 3 6,4 7.1
AERO BIB 2003 3,5 9,5 10.5
AERO BIB 2004 4 13,0 14.4
AERO BIB 2005 5 16,5 18.3
AERO BIB 2006 5,5 20 22.2
AERO BIB 2007 6,5 26 28.3
AERO BIB 2008 7,5 33 37,0
AERO BIB 2009 8 40 44,0
AERO BIB 2010 9 47 52,1
AERO BIB 2011 9.5 56 62.0
AERO BIB 2012 10 69 77.0
AERO BIB 2013 11 84 93.0

 

Advantages Summary:

  • Easy to form from original round shape into triangular shape
  • Permeability compatible with fabrics
  • Constant architecture, compared to handmade fillers
  • Time saving compared to handmade fillers
  • Made of Aero grade carbon fibres
  • No UD content (no high stress concentrations)