Plane-strain damage zone

Figure 1. DN-4FB plane-strain damage zone of epoxy that has been modified with core-shell rubber. Top ROM image obtained under Nomarski interference contrast. Bottom TEM image of the croids in the plane-strain region. In both images the crack propagates from the upper right to the upper left.

Fig. 9. Cartoon which reviews variations in the geometry of fault damage zones. The simple elliptical geometry (a) is likely to be modified in reality by strain flelds caused by (b), deviations away from a planar plane (c) at the fault splay points (d) from extensional tip strains and (e) variations in the strengths and architecture of lithologies present.

Figure 2. Bright-field TOM image of BCB-MI resin,. showing the plane-strain core region of the DN-4PB crack-tip damage zone. The crack propagates from right to left.

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