Application of a vision system to determine the Rayleigh damping coefficients of materials used in stereolithography

It is a truism to say that vibrations can be a useful phenomenon and the reason of amage. Therefore, there is no doubt that when designing technical objects it is important to be able to evaluate its dynamic properties by appropriate modeling. One of the key properties of this type is damping. There are a number of methods to study this phenomenon, however, they require quite large resources. The main topic of this work is to propose an alternative, undemanding method to measure the damping property of any structure. The test is based on the analysis of the video recording of the vibrating element, on the basis of which the input quantities for further analytical calculations are determined. The method was presented on the example of the examination of damping properties of a photocurable resin used in stereolithography. (paper)