Figure 8. Strain (εxx and εxy) maps obtained by micro-DIC for Harmonic compact at macroscopic strains of (A and A') 0.10%; (B and B') 0.59%; (C and C') 1.5%; (D and D') 3.8%; (E and E') 7.0% and (F and F') 10%. εxx: Normal strain; εxy: shear strain; DIC: digital image correlation.