Measurements of Modulus of Elasticity and Poisson's Ratio for Films

Tensile tests are widely used to evaluate plastic materials, and the results are used as indices for new materials development and for implementing quality control. Items evaluated as tensile characteristics of plastic materials include the tensile modulus, Poisson's ratio, strength, and break strain. With films, there are no standards specified with respect to test methods for the tensile elastic modulus and Poisson's ratio, yet there are demands for measurements of these values. In this Data Sheet, measurements of the tensile elastic modulus and Poisson's ratio were performed for a PET film based on elongation and width data acquired using a non-contact type extensometer/width sensor.