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30 Woven Composites 119

Table 5.3 Comparison of predicted and measured in-plane tensile strengths (MPa) for
3D orthogonal woven CFRP composites
Failure Rule of Laminate Laminate Exp.
strength mixture block model block model (avg.)
(analytical) (FEA)

(Jlt 480.7 538.1 473 483.7
021 667.2 711.0 703 486.2

(a) Micrograph of the fracture surface for a CFRP specimen loaded in stuffer yarn
direction

(b) Micrograph of the fracture surface opposite to that in (a)

Figure 5.12 Micrographs of the fracture cross-section for a typical CFRP specimen
loaded in tension in stuffer yarn direction (Tan et al, 2000a,b)