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Fig. 12

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Illustration of localized large strain and thinning of a geomembrane with a yield peak (see Fig. 11) at the location of a scratch at the surface of the geomembrane when it is subjected to tensile forces. (Note: For the sake of clarity of the top part of the figure, the scratch size has been exaggerated; in fact, a very small scratch can initiate the mechanism described above.)

Illustration de la grande déformation localisée et de l’amincissement d’une géomembrane ayant un pic d’écoulement (voir Fig. 11), qui se produisent à l’emplacement d’une égratignure de la surface de cette géomembrane lorsqu’elle est soumise à un effort de traction. (Remarque : Pour la clarté de la partie supérieure de la figure, la dimension de l’égratignure a été exagérée ; en fait, une très petite égratignure peut initier le mécanisme illustré ci-dessus.)

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