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Physical characteristics and mechanical behaviour of maize stalks for machine development

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Figure

Fig. 1. Experiments: a) transversal compression, b) three-point bending, c) pendulum impact machine, d) cutting blade unit for dynamic cutting, e) design of the cutting blade (all dimensions in mm).
Fig. 2. Physical characteristics of maize stalks; a) mean equivalent diameter ratio distribution of the internodes and the nodes of maize stalks; b) mean length ratio distribution of the internodes of maize stalks and c) mean wet-mass ratio and mean moisture content dis-tribution of the internodes of maize stalks (error bars represent the confidence interval (CI) at the 5% significance level (p = 0.05)).
Fig. 4. Maximal compressive force and required work by transversal compression: a) relationship between the maximal compressive and the equivalent diameter of the internodes; b) mean required compressive work distribution of the maize stalk, the error bar repre-sents the confidence interval (CI) at the 5% significance level (p = 0.05) and c) the relationship between the required compressive work and the equivalent diameter of internode.
Figure 6b shows the mean peak and mean ultimate
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