Abstract
Automated fibre placement was used to optimise the tow steering of carbon fibre reinforced plastic/polymer whereby the minimum defect-free steering radius (Rmin) achievable. The results revealed that in the case of the woven ply surface with unheated tool the Rmin, using 1/4 inch tows, is found to be 1350 mm. For the bare tool surface, the tool temperature had to be raised to 30℃ in order to achieve the same Rmin of 1350 mm. To attain a seamless transition from part design to manufacture using CAD, automated fibre placement was equipped with software tools (TruPLAN and TruFIBER). From the results of software validation and steering trials on a variable radius tool having a pre-laid UD ply, it is found that the ability to steer around a tighter radius was a vast asset of the 1/8 inch tow over the 1/4 inch one, which makes it the preferred choice for the more geometrically complex parts.
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