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Crack
Propagation
· De-bonding at the
fiber matrix interface, fiber and matrix fracture, and fiber pullout are involved
in the propagation of cracks in composite lamellae.
· The diagram illustrates these processes for
a transverse crack propagating normal to the fiber direction in a sample under
uniaxial tension.
·
The matrix
crack reaches the fiber an delamination occurs (b), fiber fracture is shown
in (c) followed by fiber pullout in (d).
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