Issue 50

A. Benzaama et alii, Frattura ed Integrità Strutturale, 50 (2019) 184-193; DOI: 10.3221/IGF-ESIS.50.16 191 Figure 10 : Effect of reinforcement forms for the elliptical notch a / b = 4 (a = 20, b = 5). Figure 11 : Effect of reinforcement forms for the elliptical notch a / b = 2 (a = 20, b = 10). Figure 12 : Effect of reinforcement shapes for the round notch D = 20. Figure 13 : Effect of reinforcing shapes for the notch round D = 20 mm. From Fig. 12, we can say that with this notch shape, the reinforcements increase the value of the damage force up to 12 kN maximum. Note also that the effect of reinforcing shape and more important than the shape effect of the notch which results in an ordered variation, or the rectangular shape and always advantageous followed by the round reinforcement shape unlike other cases Figure (notch and reinforcement of the same shape), follows the vertical elliptical shape, finally horizontal elliptical. The peculiarity of these cases is that the increased damage force results in an increase in elongation with the same appearance noticed. Fig. 13, shows the form of notch with the presence of reinforcement causes the damage resistance to increase up to a maximum of 7 kN. The figure shows that the shape effect of the notch and reinforcement are close together. The damage force increases with increasing elongation except for the vertical elliptical reinforcement form. For this notch shape, the figure shows that the rectangular reinforcement shape with the horizontal elliptical shape is always the strongest because these reinforcements follow the cross section. R ESULTS COMPARISON n the comparison of the results, the interdependence of the two parameters of the notch and its reinforcement, the latter are grouped in the same figure. This figure represents a comparison between the failure load values for different I