5 (a) (b) Figure 3. The enlarged test record that is displayed in Fig. 2a for the MR(T)-0.1-1.0 specimen (a) and its fragment (b) demonstrating that plastic deformation before nucleation of tear cracks and during theirs extension are intrinsically unstable and develops in small temporally confined discontinuous jumps. (a) (b) (c) Figure 4. The timebase fragment of the test-record displayed in Fig. 3a. It is shown together with the related fragment for a synchronized dependence of increments in half-crack length c on time.
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