Young´s modulus measurements in metals using impulse excitation technique

In this work, the Young’s modulus of copper, aluminum and copper-based alloys samples was determined. The measurements were performed using different vibration modes: flexural in supported bars, and longitudinal.

As a first step, the Young´s modulus of a sample was determined using different modes, finding consistency in results. On the other hand, the variation of the Young´s modulus was determined as a function of the temperature and microstructural parameters such as grain size. The capabilities and disadvantages of using the impulse excitation technique as a low-cost alternative in the field of research in metals and alloys are analyzed.