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An experimental set-up is presented. It aims at studying stress corrosion cracking in a U-notch aluminium alloy sample at a small scale, intermediate between the polycrystal (1mm) and the micro beam (10μm). Digital Image Correlation (DIC) is used to determine the amount of plasticity introduced before crack initiation from the notch tip. The elastic displacement field is also measured by DIC, and numerically calculated, in order to obtain the Stress Intensity Factor (SIF) during crack propagation. The plasticity introduced, at the load level necessary for obtaining initiation, is negligible. It is less than 0.5% at the tip of the notch and less than 0.2% for the rest of the sample. First stress corrosion cracking results show that the SIF values during crack propagation are in between 4 and 6 MPa√m, being consistent with a SCC intergranular brittle fracture according to the literature. The intergranular nature of the crack is confirmed by a SEM observation of the final fracture surface
