The photoelastic pads bought from [Precision Urethane](http://www.precisionurethane.com/)or [Vishay](http://www.vishaypg.com/micro-measurements/) can be hydro-cut into designed size and shape particles. Usually for 60A (Precision Urethane) 1/4 inch thickness or PSM-4(Vishay) 1/4 in thickness pads, the waterjet is set as 60,000psi(~410MPa) with 80 mesh abrasive.
The photoelastic pads bought from [Precision Urethane](http://www.precisionurethane.com/)or [Vishay](http://www.vishaypg.com/micro-measurements/) can be hydro-cut into designed size and shape particles. Usually for 60A (Precision Urethane) 1/4 inch thickness or PSM-4(Vishay) 1/4 in thickness pads, the waterjet is set as 60,000psi(~410MPa) with 80 mesh abrasive.
We used waterjet to cut gear particles to study the friction effect on shear jamming.
