Mean craze fibril diameter

In Fig. 24.1 we show a part of a craze. The parameter/) is the (mean) craze fibril diameter while Do is the craze fibril spacing. Both D and Do increase somewhat with increasing He. Berger [42] traced the craze fibril breakdowns to the formation of small pear-shaped voids at the craze/bulk interface. The results in [42] confirm the microscopic model of Kramer and Berger [38] which we see in Fig. 24.1. 

Table 2. Mean fibril diameter D and volume fraction of fibrils V, of crazes I and II and of crazes produced in a mixture of polycarbonate with c = 0.01 g/g dimethyl phthalate (PC-DMP),...

Figure 42 shows the craze stress versus craze propagation velocity. The fibrils diameter being unknown, the lower mean stress on the craze surface does not necessarily mean a lower stress in the fibrils, but it may be imderstood as an... 

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