1. LMAF / EPFL What's new? Tested 9 specimens (3 plates, 1mm joint): 2 cameras -> local / global deformations 2 cameras -> local / global deformations variability of yield stress / ultimate stress (Ultimate load range from 775 to 1050 N) variability of yield stress / ultimate stress (Ultimate load range from 775 to 1050 N) still 6 specimens (1mm) to test => data analysis & identification still 6 specimens (1mm) to test => data analysis & identification machining of the other samples : 2 weeks delay... machining of the other samples : 2 weeks delay... Optical measurements: found a method to remove the effects of the out of plane displacements for optical strain measurement found a method to remove the effects of the out of plane displacements for optical strain measurement finished the 2D strain field measurement algorithm finished the 2D strain field measurement algorithm Identification method: improvement of the method (optimization methods with/without bounds) improvement of the method (optimization methods with/without bounds) development of a simple user interface development of a simple user interface improvement of the parametric joint finite element model (mesh, outputs...) improvement of the parametric joint finite element model (mesh, outputs...)

2. LMAF / EPFL 1mm Joints

4. LMAF / EPFL 2D Digital Image Correlation

5. LMAF / EPFL What's next? Testing 1mm specimens: 1mm specimens: test the last 6 specimens process the data (plasticity evolution, deformation analysis, stress-strain curves) sort the measurements and identify constitutive parameters => statistics 0.5 mm & 0.25mm specimens: 0.5 mm & 0.25mm specimens: after machining: send back 4x3 specimens to EMPA for X-Ray analysis (voids?) test the other 0.5 mm samples & process data check if optical measurement technique is sensitive enough for 0.25 mm joints identify the constitutive parameters for 0.5 mm joints finally test & process the data for 0.25mm joints send all the samples back to EMPA for fractographic analysis Developments: finish the user interface of the identification method (=> Matlab package) + user manuals finish the user interface of the identification method (=> Matlab package) + user manuals