Waviness defects can occur during consolidation of a thermoplastic composite laminate. The formation of this waviness is investigated with an experimental setup, designed for consolidating a laminate using a glass plate. This enables direct observation of waviness formation during processing. It is found that waviness is formed in two stages: in the first place during melting of the laminate and secondly during the cooling phase between melt and crystallization. This research indicates that matrix shrinkage does not play a role in the formation of fiber waviness in AS4/PEEK during cooling. Together with the relevant factors affecting waviness formation from literature, this leaves residual stresses and tool shrinkage as the driving forces for waviness formation during press consolidation of AS4/PEEK laminates.
|Publication status||Published - 2018|
|Event||SAMPE Europe 2018 - Southampton, United Kingdom|
Duration: 11 Sep 2018 → 13 Sep 2018
|Conference||SAMPE Europe 2018|
|Period||11/09/18 → 13/09/18|