精细陶瓷（高级陶瓷、高级工业陶瓷）.环境温度和大气压力下陶瓷复合材料的机械性能.用超声波技术测定弹性性能

[中文适用范围]： 本文件 specifies an Ultrasonic method to determine the components of the elastic 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. [外文原描述]： ISO 18610:2016 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. It applies to ceramic matrix composites with a continuous fibre reinforcement: unidirectional (1D), bidirectional (2D), and tridirectional (×D, with 2 < × ≤ 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.