Investigation of elastic properties of prints

Abstract

Mechanical (elasticity) properties of prints during printing process and converting are essential. An effective computational inverse technique involving FEM is presented to determine the elasticity properties of prints consisting of paper and ink layer or ink coated with varnish. Methodology is based on experimental data of modal vibration testing and finite element modelling. The aim of finite element modelling and optimization is to predict the material properties obtaining the same vibration frequencies and modes while test specimen is loaded the similar way as in printing press. Proposed technique can be used for the printing process modelling as non-destructive method during the initial design stage, and for the forecasting of the behaviour of the end products.