Well, put simply, it is a device that can show you the photoelasticity of a clear specimen, which can reveal the stress distribution in the material! And it is actually really easy to make one.

To get that 3D view, they use a combination of the photoelasticity to illuminate the force chains, along with a method called computed tomography, similar to that used in medical CT scans, to ...

The basic research developments include original mechanical models, dedicated laboratory and field experimental apparatuses and ideal testing systems utilizing photoelasticity, image acquisition and ...

The stresses due to the pressure of a sphere on a plate (Ref. 3) and of a cylinder on a plate (Ref. 4) have also been investigated by photoelasticity. The deformation and contact area for a ball in a ...

Experimental mechanics: To design and use experiments to validate and test theories; To analyse empirical data to determine material properties; To independently operate a universal testing machine; ...