Principle

According to Fourier Analysis, search for low harmonic frequencies within 100HZ with no need for scanning. Then absorbed energy will invoke vibration under multiple harmonic frequencies, which will in turn provoke accumulated vibration under high harmonic frequencies so as to cause multi-directional dynamic stress. These stresses will superimpose on multi-dimensional residual stress to produce plastic deformation, which then will decrease peak value and redistribute residual stress. Realize multi-dimension stress relief, improve dimension precision stability, and avoid cracking and distortion