The invention relates to a vibration
stress relief method using an electric vibration
experimental system and a device thereof. The method comprises the following steps:
residual stress in a workpiece is measured, and
dynamic stress level applied during vibration
stress relief for the workpiece is determined;
frequency spectrum analysis for the workpiece is carried out by an electric vibration table to preferably choose a plurality of
harmonic frequencies; the exciting force of sinusoidal fixed-frequency or frequency sweep is randomly applied on the workpiece, the
dynamic stress level of the workpiece is detected in real time in the process of force application, and proper exciting force is chosen according to parameters adjusting the exciting force of vibration table; under proper exciting force, continuous
ageing treatment for the workpiece is carried out till the operation is finished after reaching the set time. The device comprises the electric vibration table, a
dynamic stress measuring
system and a vibration controller. The invention has simple technique and low operation cost, and is suitable for workpieces with different sizes; the process is high-efficient and fast, and saves energy and protects environment; furthermore, the device has simple structure and convenient operation, small occupying space and low
energy consumption, and is widely applied to the technical field of
machining.