Journal
POLYMERS
Volume 15, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/polym15020276
Keywords
carbon fiber; CFR polymer; X-ray; computed tomography; fracture dynamics
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This study visualized the destructive processes of layered carbon fiber reinforced plastics under uniaxial stretching using synchrotron X-ray microtomography. The article focuses on the details of the early stages of deformation and highlights the sequence of irreversible structural changes before material destruction.
The investigation of destruction processes in composite materials is a current problem for their structural application and the improvement of their functional properties. This work aimed to visualize structural changes induced in layered carbon fiber reinforced plastics (CFRP) with the help of synchrotron X-ray microtomography. This article presents the details of destructive processes in the early stages of the deformation of reinforced polymers under uniaxial stretching, investigated at the micro level. Individual structural elements of the composite-filaments, parallel fiber bundles, the nonuniformity of the polymer binder distribution, and continuity defects-were observed under an external load. We have considered the influence of the material architecture and technological defects on fracture evolution in cross-ply and quasi-isotropic fiber-reinforced plastics. The results indicate the sequence of irreversible structural changes before the destruction of the material.
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