Figure 3. 3D representation of voids and the crack in a numerically cut 105 µm thick slice at sample centre for a) CMOD = 0.5mm b) CMOD = 1.5 mm c) CMOD = 1.625 mm d) CMOD = 1.75 mm e) CMOD = 1.875 mm f) CMOD = 2.375mm Figure 4 shows the displacement field measured by DVC with same the code as that used in [8] on the present laminography data by registering 2 volumes located in the squared box indicated in figure 4a. The reconstructed volumes corresponding to CMOD = 0.5 mm and CMOD = 0.625mm are compared. The volume of the compared cubes is taken symmetrically to the sheet mid-thickness. The measured displacement field is qualitatively correct, namely, an expansion in T direction is detected that is consistent with the loading along the same direction. This preliminary result prompts us to continue the analysis for further loading steps, and to derive the strain fields. These measurements may then open the possibility to obtain insights into deformation field and strain localization mechanisms leading to crack (f) (e) (d) (c) (a) (b) 400 µm T L S 23
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