Mini biaxial tensile machine

The mini biaxial tensile machine allows one to apply in-plane biaxial stress states with arbitrary stress ratios and to perform strain path changes on thin-sheet metals. The device is optimized for in situ usage inside a scanning electron microscope and at synchrotron beam lines. Both dogbone and cruciform shaped samples can be mounted. The machine is controlled by an in-house written LabVIEW steering program.

More detailed information on this device can be found at:
A Miniaturized Biaxial Deformation Rig for in Situ Mechanical Testing
Van Petegem S, Guitton A, Dupraz M, Bollhalder A, Sofinowski K, Upadhyay M V, Van Swygenhoven H
Experimental Mechanics 57, 569-580 (2017).
DOI: 10.1007/s11340-016-0244-0

(a) Schematic design of the in situ biaxial deformation device, (b) zoom on the sample mounted on the grips, (c) carrier plate (blue) with additional sensors connected to the grips
Displacement  
 Maximum displacement10mm
 Minimum step size10nm
 Maximum speed1mm/s
Force  
 Maximum force44N
Strain measurement  
 MethodDigital image correlation (DIC)
 Resolution0.02%
Other specifications  
 Deformation modesMultiaxial tension
 Control modesDisplacement, force
 TemperatureRT
 Size (L x W x H)200mm × 190mm × 73.2mm
 Weight2.3kg
 Compatible SLS beam linesMaterials Science, MicroXAS