13th International Conference on Fracture June 16–21, 2013, Beijing, China -4- As stated above, one of the main aims of this research consists of comparing the mechanical response of normal and moderately calcified MCT. For this purpose, in Fig. 4, the average stress-strain curves of both families are shown, including the standard deviations. Moreover, each of the datasets was represented, see Fig. 5, using a box plot. Fig. 4. Average stress-strain curve for the normal, (a), and moderately calcified, (b), chordae, including the standard deviations Fig. 5. Box plots representing the mechanical parameters analysed for normal and moderately calcified MCT: (a) Young´s modulus; (b) secant modulus; (c) proportional limit stress; (d) tensile strength; (e) strain at fracture; (f) density of energy up to maximum load
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