What are we cooking up in the Great Northwoods?
Not chopped. Not stretch-broken. Just formable .
This technology allows much easier, low cost fabrication of complex shaped composite structures.
It is based on a discontinuous tow reinforcement directions permitting
the forming of complex shapes from simple preform starting shapes.
Presently available fabrics can conform
to simple shapes but will wrinkle and/or distort. Using the Pepin technology, complex shaped parts with good mechanical properties can be fabricated at low cost.
The concept is based on cutting currently available reinforcing yarns or tows into discrete lengths and aligning these to form a discontinuous tow. This
DiscoTex® tow is composed of long, discontinuous and overlapped reinforcing tow segments combined with
aligned continuous fiber and an overwrap. The aligned continuous fiber and overwrap fiber are required to
handle the DiscoTex® tow during textile operations but they can also be used as the matrix precursor material.
In cases where the continuous fiber is not needed in later processing steps it is removed to yield an all discontinuous textile material.
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