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
精细陶瓷(先进陶瓷 先进技术陶瓷) - 空气大气压下环境温度下陶瓷复合材料的机械性能 - 超声波技术测定弹性性能
发布日期:
2016-09-19
ISO 18610:2016规定了在室温下测定陶瓷基复合材料弹性张量成分的超声波方法。杨氏模量、剪切模量和泊松系数可由弹性张量的分量确定。
它适用于具有连续纤维增强体的陶瓷基复合材料:单向(1D)、双向(2D)和三向(×D,2<;×D)≤ 3) 至少具有正交各向异性对称性,且其材料对称轴已知。
该方法仅在使用的超声波波长大于代表性基本体积的厚度时适用,从而对所用换能器的频率范围施加上限。
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.