PSI - Issue 44

Andrea Meoni et al. / Procedia Structural Integrity 44 (2023) 1632–1639 Andrea Meoni et al. / Structural Integrity Procedia 00 (2022) 000–000

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Table 1. Average values obtained by carrying out three-point bending tests on beam samples.

Sample

Maximum applied force (N)

Standard deviation (N)

Maximum bending strength (MPa)

Standard deviation (MPa)

Plain beams Doped beams

612.83 587.25

62.07 47.55

1.44 1.38

0.14 0.11

Table 2. Average values obtained by carrying out compression tests on cube samples.

Standard deviation (MPa)

Sample

Maximum compressive strength (MPa)

Plain cubes Doped cubes

3.52

0.87 0.26

4.3

Fig. 4. Time histories of the total electrical resistance and applied strain obtained for each section of the samples tested under compression loads: (a) plain beam sample; (b) doped beam sample.

Fig. 5. Cracks developed on the samples subjected to three-point bending tests: (a) plain beam sample; (b) doped beam sample.