Vibratory stress relief
![Figure 1: A waveform that demonstrates ring time, which is the time period vibration continues, after resonant excitation ceases.[8]](/Images/godic/202502/19/Ringtime1419.jpg")
![Figure 2: Reverse ring time, or RRT, is the time period between the start of vibration excitation, and full resonant amplitude.[9]](/Images/godic/202502/19/Diagram21419.jpg")
![Figure 3: The effects of scanning at different scan rates: 10 and 50-RPM/sec. Peaks that are scanned too quickly don't have enough time to reach full resonant amplitude, due to the RRT effect. The larger and heavier the structure, the greater the inertia, the longer the ring time (and reverse ring time): Thus, larger, heavier structures might require slower scan rates to plot accurate resonance patterns.](/Images/godic/202502/19/Scan_Rate_Chart1419.jpg")
![Figure 4: VSR Treatment Chart consists of two plots: The upper plot is workpiece acceleration, the lower plot is vibrator input power, simultaneously plotted vertically vs. a common horizontal axis of vibrator speed. Peaks in the acceleration data depict resonances; growth and shifting of the peaks are the response of the workpiece to treatment.](/Images/godic/202502/19/VSR_Treatment_Chart1419.jpg")
Vibratory Stress Relief, often abbreviated VSR, is a non-thermal stress relief method used by the metal working industry to enhance the dimensional stability and mechanical integrity of castings, forgings, and welded components, chiefly for two categories of these metal workpieces: