How to judge the stress relief results of vibration aging instrument

How to determine whether the timeliness effect of the parts meets the timeliness requirements?

pressJB/T5926—2005When one of the following situations occurs, it can be determined that the vibration aging process effect has been achieved according to the standard (Machinery Industry Standard of the People's Republic of China).

a.Amplitude time（a—t）The curve rises and then flattens;

b.Amplitude time（a—t）The curve rises, then falls, and finally flattens;

c.Amplitude frequency（a—n）The peak acceleration after curve oscillation increases compared to before oscillation;

d.Amplitude frequency（a—n）The resonance frequency of the curve after vibration decreases compared to before vibration;

e.Amplitude frequency（a—n）The bandwidth of the curve after vibration becomes narrower than before vibration;

fAmplitude frequency（a—n）The resonance peak of the curve exhibits fission phenomenon.

Operation precautions: In addition to manual aging of workpieces, manual operation mode is generally used for processing new or special shaped workpieces to check whether the support, exciter position, sensor position, and excitation force of the workpiece are appropriate; By using manual mode, the lifting speed of the exciter can be controlled freely, and the resonance frequency and resonance point size of the workpiece can be quickly found.