Issue 53

K. Afaf et alii, Frattura ed Integrità Strutturale, 53 (2020) 66-80; DOI: 10.3221/IGF-ESIS.53.06

The results obtained in this study clearly suggest that during the first fifteen (15) months of immersion, the degradation kinetics of the mechanical properties (tensile strength and modulus of elasticity) largely depend on the nature of water used; whereas during the last months, it is practically independent.

(a) (b) Figure 8: Effect of immersion time in drinking water (tap water) on the mechanical properties of PMMA: (a) Stress at break, (b) Modulus of elasticity.

(a) (b) Figure 9: Comparative analysis of the effect of the nature of aging medium on the mechanical behavior of PMMA: (a) First five months of immersion, (b) Last five months of immersion.

Figure 10: Comparative analysis of Young's modulus of PMMA aged in seawater and in drinking water (tap water).

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