Comparison of Several Methods for Measuring Elasticity Coefficients

An accurate knowledge of the value of young’s modulus is essential for design studies, for finite elements and modeling calculations and for giving reliable values for constitutive laws. Several ways to measure the elastic coefficients exist: Direct measurement by a tensile test; Measurement by an impulse excitation technique (resonant or damping frequency); Ultrasonic measurement. This paper proposes a comparative study of these different methods associated to other topics related to sample properties and manufacturing process. From this study, the best characterization methods selected are those by vibration.