Study of a bi-unit impact damper using optical technique

This paper deals with a passive vibration control using a bi-unit impact vibration absorber. The main contribution of this work is to experimentally analyze the effectiveness of a bi-unit impact vibration absorber using digital image processing. Here, the technique of digital image processing is used to demonstrate how unique experimental results can be obtained using high performance data acquisition and high speed cameras. The absorption characteristics of a bi-unit impact vibration absorber are investigated in case of transient and forced vibration. The absorption pattern of the bi-unit is studied under deterministic excitation. These results reveal that the use of digital image processing can eliminate existing limitations which includes the changing of dynamics of a system due to a placement of an actuator. The results presented also include the application of the inverse problem methodology for the case of transient response without an impact vibration absorber.