Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at ambient temperature in air atmospheric pressure - Determination of elastic properties by ultrasonic technique
NORM herausgegeben am 1.7.2021
Bezeichnung normen: ČSN EN ISO 18610
Zeichen: 727597
Katalog-Nummer: 512244
Ausgabedatum normen: 1.7.2021
Zahl der Seiten: 32
Gewicht ca.: 96 g (0.21 Pfund)
Land: Tschechische technische Norm
Kategorie: Technische Normen ČSN
This document specifies an ultrasonic method to determine the components of the elasticity tensor of ceramic matrix composite materials at room temperature. Young´s moduli shear moduli and Poisson coefficients, can be determined from the components of the elasticity tensor. This document applies to ceramic matrix composites with a continuous fibre reinforcement: unidirectional (1D), bidirectional (2D), and tridirectional (xD, with 2 < x <= 3) which have at least orthotropic symmetry, and whose material symmetry axes are known. This method is applicable only when the ultrasonic wavelength used is larger than the thickness of the representative elementary volume, thus imposing an upper limit to the frequency range of the transducers used