Issue 60

A. Elakhras et alii, Frattura ed Integrità Strutturale, 60 (2022) 73-88; DOI: 10.3221/IGF-ESIS.60.06

CMOD C were in the range of 0.028 to 0.06 mm, and 0.038 to 0.071 mm for MC FD FRC and MC-FGC, respectively. The percentage error between the predicted and the experimental CMOD was calculated for all FD-FRC and FGC beams, and the results are given in Tab. 4. The mean % error for all beams of FD-FRC and FGC were -27% and 24.8%, respectively.

4

4

L/d= 4 L/d= 5 L/d= 6

L/d= 4 L/d= 5 L/d= 6

3

3

2

2

d max / NMAZ 1

d max / NMAZ 1

0

0

3

4

5

6

7

3

4

5

6

7

L /d

L /d

a) MC-FD FRC at first cracking b) MC-FRC at max stress Figure 9:The fracture toughness reliability for MC-FD FRC was measured based on E-TPFM at different L/d ratios.

MC-FD FRC

MC-FGC

Beam Code L/d

Experimental CMOD, mm

Predicted CMOD C S , mm

Predicted CMOD C S , mm

% Erorr Experimental CMOD, mm

% Erorr

B4-1

0.045

0.034

-24

0.038

0.054

42

B4-2

4

0.052

0.037

-29

0.06

0.071

18

B4-3

0.06

0.042

-30

0.05

0.064

28

B5-1

5

0.04

0.028

-30

0.038

0.059

55

B5-2

0.045

0.037

-18

0.05

0.058

16

B6 -10 Table 4: The Experimental and predicted values of CMOD C at first cracking with the % error for MC-FD FRC and MC-FGC. 6 0.041 0.029 -29 0.06 0.054

0.08

0.08

0.06

0.06

0.04

0.04

CMOD C , mm

CMOD C , mm

0.02

0.02

Experimental ETPFM

Experimental ETPFM

0

0

3

4

5

6

7

3

4

5

6

7

L/d

L/d

a) MC- FD FRC at first cracking b) MC-FGC at max stress Figure 10:Comparison between results of CMOD C from experimental by the predicted from ETPFM.

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