Micro Shear Device
A dedicated miniaturized deformation rig has been built to apply reversible shear and to be compatible with in situ Laue micro-diffraction. It requires a rather complex sample geometry, where a single crystal is locally thinned down to x-ray beam transparency. Details on the sample geometry can be found here. The machine is controlled by an in-house written LabVIEW program. It allows to perform cyclic reverse shear at constant total strain or applied force.
More information on the device can be found here:
Following dislocation patterning during fatigue
Irastorza-Landa A, Van Swygenhoven H, Van Petegem S, Grilli N, Bollhalder A, Brandstetter S, Grolimund D
ACTA MATERIALIA 112, 184 (2016).
|Minimum step size||5nm|
|Method||Angular encoder combined with finite element modeling|
|Maximum shear strain||~1%|
|Deformation modes||Reverse shear|
|Control modes||Displacement, force|
|Size (L x W x H)||200mm x 90mm x 150mm|
|Compatible SLS beam lines||MicroXAS|