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. 2015 Nov;109:25–35. doi: 10.1016/j.matchar.2015.09.010

Fig. 3.

Fig. 3

(a) SEM image of a representative co-ES fiber bundle cross-section; (b) the corresponding binary converted image of (a), with fiber walls depicted in white; (c) area porosity (65.7%) indicated in red after image thresholding; (d) a zoomed-in view of the identified pores, denoted by their unique index number in red.