3D X-ray CT of fatigue damage in fibre composite

Abstract eng:
In this study, 3D X-ray CT was used to investigate the fatigue damage in a uni-directional (UD) glass fibre composite made from a non-crimp fabric at different stages of the fatigue life. The damage was found to appear as local UD fibre fracture regions close to the so called supporting backing layer, which seemed to have an important role in the location of the damage initiation. Furthermore, the damage appeared as 3D regions containing both clusters and chains of fibre fractures, and it was concluded that considering this problem in 3D seemed to be important in order to obtain realistic results.

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