  If carbon fibre layers are prevented from slipping over one another as they
consolidate onto a non-trivial geometry, they can be particularly susceptible
to wrinkling/buckling instabilities. A one dimensional model for wrinkling
during consolidation over an external radius is presented. Critical conditions
for the appearance of wrinkles provide possible manufacturing and design
strategies to minimise wrinkling. Numerical results for the unstable post
buckling paths show localized buckling behaviour which demonstrates qualitative
agreement with micrographs of wrinkles.
