Vibration stress relief began during World War II., when the United States Navy and German armaments industry used harmonic vibration to test metallic boat hulls and airplane wings.
It was recognized that vibrating the metal at its resonant frequency would remove thermal stresses.

This process sped up in the 1970s, when technicians provided a high quality thermal stress relief without the large ovens needed for heat treating.

Vibration stress relief DMM applies removes thermal stress by applying mild vibrations to a metal component, producing accelerated motion of the atoms in the crystal. With the addition of vibration energy, the atoms maximize their columbic attraction and restore the neutral crystalline configuration.
Vibration stress relief process speeds this natural transformation so that it occurs in 20-40 minutes for most metals.

Vibration stress relief benefits:

1. reduces distortion immediately following machining, grinding, heat treating etc.
2. reduces delayed distortions
3. reduces premature cracking