PSI - Issue 40

V. Kibitkin et al. / Procedia Structural Integrity 40 (2022) 223–230

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V. Kibitkin et al/ Structural Integrity Procedia 00 (2022) 000 – 000

The presence of a network of inhomogeneities formed during the production of ceramics offers simple ways for the development of microcracks formed during compression, since these microcracks easily propagate cracks, breaking partial bonds between the segments. On the other hand, these segments slide relative to each other under load and form fragments that fill the space between the segments (Fig. 4, a) and the pore space of large pores (Fig. 4, b).

a

b

c

d

e

f

g

h

36 s, =30 s t t   (b, f),

105 s, =30 s t t   (c, g).

Fig. 3. Evolution of displacement fields (a-d) and strain fields (e-h):

6 s, =6 s t t   (а, е),

190 s, =30 s t t   (d, h).

a

b

Fig. 4. SEM images of ceramic samples after compression: 1-Compaction bands; 2-space of large pores, filled with fragments of collapsed material.