On a simple impact test method for accurate measurement of material properties

A simple impact test method is presented to accurately measure the elastic and shear moduli and Poissonʹs ratio of a uniform Aluminum 6061-T651 cylindrical specimen with free boundary conditions. The elastic modulus is determined from the longitudinal vibration of the specimen and the shear modulus is determined from its torsional vibration. A new technique is developed to mount an accelerometer on the specimen to measure its torsional vibration. The Poissonʹs ratio determined for the specimen matches exactly with its known value.