Investigation of dynamic displacements of lithographic press rubber roller by time average geometric moiré

Abstract

Geometric moire fringe formation method is a classical well-established experimental technique with numerous practical applications. This paper proposes the application of time-average geometric moire analysis for the determination of dynamic displacements of the lithographic press rubber roller. This optical measurement technique is a natural extension of double-exposure geometric moire for the identification of dynamic displacements of vibrating elastic structures. Experimental investigations prove the validity and effective practical applicability of the method.