and the first 3 natural frequencies of a Poisson plate are sensitive for variations of all the orthotropic Engineering constants. Standards ASTM E1876 - 15 Standard Test Method for Dynamic Youngs Modulus, Shear Modulus, and Poissons Ratio by Impulse Excitation of Vibration. www.astm.org. ISO 12680-1:2005 - Methods of test for refractory products -- Part 1: Determination of dynamic Young's modulus (MOE) by impulse excitation of vibration. ISO. DIN EN 843-2:2007 Advanced technical ceramics - Mechanical properties of monolithic ceramics at room temperature". webstore.ansi.org''. References Nondestructive testing Quality control Materials science Continuum mechanics