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.管材拉伸性能的测定

[中文适用范围]： 本文件规定了在常温空气大气压下测定连续纤维增强陶瓷基复合材料管的拉伸性能的条件。本文件特定于管状几何形状，因为复合材料管中的纤维结构和试样几何形状与平面试样有明显不同。本文提供有关单轴拉伸性能和拉伸应力-应变响应的信息，例如拉伸强度和应变、拉伸弹性模量和泊松比。这些信息可用于材料开发、制造控制（质量保证）、材料比较、表征、可靠性和管状组件的设计数据生成。本文件涉及但不仅限于各种建议的试件制备方法。它主要适用于陶瓷和/或玻璃基复合材料管，其具有连续纤维增强：单向（1D缠绕和层压）、双向（2D编织和编织）和三向（xD，其中 2 < x < 3），沿管轴加载。本文件中表达的值与国际单位制 (SI) 相一致。 NOTE 在大多数情况下，用于高温环境下的陶瓷基复合材料都涂有抗氧化涂层。 [外文原描述]： ISO 20323:2018 specifies the conditions for the determination of tensile properties of ceramic matrix composite tubes with continuous fibre-reinforcement at ambient temperature in air atmospheric pressure. This document is specific to the tubular geometries since fibre architecture and specimen geometry factors are distinctly different in composite tubes than in flat specimens. ISO 20323:2018 provides information on the uniaxial tensile properties and tensile stress-strain response such as tensile strength and strain, tensile elastic modulus and Poisson's ratio. The information may be used for material development, control of manufacturing (quality insurance), material comparison, characterization, reliability and design data generation for tubular components. ISO 20323:2018 addresses, but is not restricted to, various suggested test piece fabrication methods. It applies primarily to ceramic and/or glass matrix composite tubes with a continuous fibrous-reinforcement: unidirectional (1D filament winding and tape lay-up), bi-directional (2D braid and weave) and tri-directional (xD, with 2 < x < 3), loaded along the tube axis. Values expressed in this document are in accordance with the International System of Units (SI). NOTE In most cases, ceramic matrix composites to be used at high temperature in air are coated with an antioxidation coating.