Edgewise compressive properties of cardboard obtained from shear loading tests

A shear loading test was performed to obtain the edgewise compressive properties of two 1-mm-thick flat cardboard samples whose length coincided with the machine and cross directions. To determine the optimum configuration of the sample, the gauge length, defined as the distance between the inner edges of the tabs adhered to the ends of the sample, was varied from 2 to 30 mm, the optimum gauge length was determined to be 12 mm. The compressive stress–strain relationship was subsequently obtained using the sample with this optimum configuration, and the Young’s modulus, proportional limit stress, compressive strength, and Poisson’s ratio were determined. In addition, these properties were compared with those obtained from a tension test conducted independently of the compression test. Based on the results obtained in this study, the shear loading test was effective in obtaining several edgewise compressive properties of cardboard when the sample configuration was appropriately designed, despite several issues that should be solved in the future.