What is "Formula 62"?

"Formula 62" is a resonance based method of vibratory stress relief developed by Stress Relief Engineering Co. Workpieces are subjected to low frequency, high amplitude vibrations for a short period of time based on the weight of the workpiece. This allows the residual stresses to be reduced to a much lower level where static equilibrium is restored. The resonance method is used by researchers around the world in stress relief studies using vibration and is currently considered an industry standard.