Strain Rate Characterization of Packaging Materials
Abstract: This master thesis firstly introduced the basic knowledge of packaging materials through a literature survey focused on exploring the effect of strain-rate on mechanical properties of paperboard materials. By means of tensile tests and microscopic observation, the changes of mechanical properties such as yield strength, strain and Young's modulus of the two different paperboards used in laminated packaging materials for the two different package types Tetra Fino® Aspetic (TFA) and Tetra Brik® Aseptic (TBA) from Tetra Pak® were analyzed at strain rate ranging from 0.0167 s-1 to 1.67 s-1. The yield strengths of the paperboard samples were first increased and then decreased in this strain-rate range, and the maximum value was obtained at about 0.167 s-1. The strain was basically positively correlated with the strain rate, and the Young's modulus was not significantly related to it.
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