Abstract
Fiber waviness is one of initial defects during processing such as filament windindg. The fiber waviness is made due to the local fiber micro-buckling of the curing process. The fiber waviness causes reduction of compressive strength of the composite structure. The mechanism of developing fiber waviness is, however, not completely clear. In the present study, a model of generating fiber micro-buckling is proposed. The model is based on the compression load caused by shrinkage of a metal jig. Two faults are considered in the model: bonding between a metal jig and a composite and insufficient cure of the resin. The analysis and experiment based on this model are conducted. The new model successfully predicts the initiation of the fiber micro-buckling.
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