1.1 本试验方法包括测定连续纤维增强陶瓷复合材料在高温下恒定拉伸载荷下的随时间变化的变形和破裂时间。该测试方法解决但不限于各种建议的测试样本几何形状。此外，还讨论了试样制造方法、允许弯曲、温度测量、温度控制、数据收集和报告程序。 1.2 该测试方法主要用于所有具有连续纤维增强的高级陶瓷基复合材料:单向（1-D）、双向（2-D）和三向（3-D）。此外，该测试方法也可用于具有1-D、2-D和3-D连续纤维增强的玻璃基复合材料。该测试方法不直接涉及不连续纤维增强、晶须增强或颗粒增强陶瓷，尽管此处详述的测试方法可同样适用于这些复合材料。 1.3 本试验方法中表示的数值符合国际单位制（SI）和 IEEE/ASTM SI 10 . 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 危害陈述记录在 7.1 和 7.2 . 1.5 本国际标准是根据世界贸易组织发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的BT）委员会。 ======意义和用途====== 4.1 该测试方法可用于材料开发、材料比较、质量保证、表征和设计数据生成。 4.2 连续纤维增强陶瓷基复合材料是需要高度耐磨性和耐腐蚀性以及高温韧性的结构应用的候选材料。 4.3 蠕变试验测量材料在给定温度下在恒定载荷下的随时间变化的变形。蠕变断裂试验提供了材料在高温下承受恒定机械载荷时的寿命的量度。在选择材料和设计用于高温下使用的部件时，所使用的测试数据的类型将取决于承载能力的标准，该标准最好地定义了材料的使用有用性。4.4 蠕变和蠕变断裂试验提供了关于在高温下承受单轴拉伸应力的材料的时间相关变形和失效时间的信息。需要均匀的应力状态来有效地评估任何非线性应力-应变行为，所述非线性应力-应变行为可能是累积损伤过程(例如，基体开裂、基体/纤维脱粘、纤维断裂、分层等)的结果，所述累积损伤过程可能受到测试模式、测试速率、加工或合金化效应、环境影响或升高的温度的影响。这些影响中的一些可能是应力腐蚀或亚临界（缓慢）裂纹扩展的结果。应注意，陶瓷材料通常在拉伸时比在压缩时蠕变得更快。因此，在拉伸和压缩两种情况下都应获得设计和寿命预测的蠕变数据。4.5 由特定材料或零件的选定部分或两者制造成标准化尺寸的试样的拉伸蠕变和拉伸蠕变断裂测试的结果可能不完全代表整个全尺寸最终产品的蠕变变形和蠕变断裂特性或其在不同环境或各种高温下的使用行为。 4.6 出于质量控制的目的，从标准化拉伸测试样本得出的结果可以被认为指示了从其获取的材料对于给定的初级加工条件和加工后热处理的响应。

1.1 This test method covers the determination of the time-dependent deformation and time-to-rupture of continuous fiber-reinforced ceramic composites under constant tensile loading at elevated temperatures. This test method addresses, but is not restricted to, various suggested test specimen geometries. In addition, test specimen fabrication methods, allowable bending, temperature measurements, temperature control, data collection, and reporting procedures are addressed. 1.2 This test method is intended primarily for use with all advanced ceramic matrix composites with continuous fiber reinforcement: unidirectional (1-D), bidirectional (2-D), and tridirectional (3-D). In addition, this test method may also be used with glass matrix composites with 1-D, 2-D, and 3-D continuous fiber reinforcement. This test method does not address directly discontinuous fiber-reinforced, whisker-reinforced, or particulate-reinforced ceramics, although the test methods detailed here may be equally applicable to these composites. 1.3 Values expressed in this test method are in accordance with the International System of Units (SI) and IEEE/ASTM SI 10 . 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Hazard statements are noted in 7.1 and 7.2 . 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This test method may be used for material development, material comparison, quality assurance, characterization, and design data generation. 4.2 Continuous fiber-reinforced ceramic matrix composites are candidate materials for structural applications requiring high degrees of wear and corrosion resistance and toughness at high temperatures. 4.3 Creep tests measure the time-dependent deformation of a material under constant load at a given temperature. Creep rupture tests provide a measure of the life of the material when subjected to constant mechanical loading at elevated temperatures. In selecting materials and designing parts for service at elevated temperatures, the type of test data used will depend on the criteria for load-carrying capability which best defines the service usefulness of the material. 4.4 Creep and creep rupture tests provide information on the time-dependent deformation and on the time-of-failure of materials subjected to uniaxial tensile stresses at elevated temperatures. Uniform stress states are required to effectively evaluate any nonlinear stress-strain behavior which may develop as the result of cumulative damage processes (for example, matrix cracking, matrix/fiber debonding, fiber fracture, delamination, etc.) which may be influenced by test mode, test rate, processing or alloying effects, environmental influences, or elevated temperatures. Some of these effects may be consequences of stress corrosion or subcritical (slow) crack growth. It is noted that ceramic materials typically creep more rapidly in tension than in compression. Therefore, creep data for design and life prediction should be obtained in both tension and compression. 4.5 The results of tensile creep and tensile creep rupture tests of specimens fabricated to standardized dimensions from a particular material or selected portions of a part, or both, may not totally represent the creep deformation and creep rupture properties of the entire, full-size end product or its in-service behavior in different environments or at various elevated temperatures. 4.6 For quality control purposes, results derived from standardized tensile test specimens may be considered indicative of the response of the material from which they were taken for given primary processing conditions and post-processing heat treatments.