1.1 本试验方法包括在环境温度下使用非对称四点弯曲测定高级陶瓷接头的剪切强度。讨论了试样几何形状、试样制造方法、测试模式（即力或位移控制）、测试速率（即力或位移速率）、数据收集和报告程序。 1.2 本试验方法用于测量通过机械加工从较大连接件中提取的试样中陶瓷接头的剪切强度。 以这种方式制作的试样预计不会因残余应力松弛而翘曲，但预计会比通过连接两半制备的对接试样更直，尺寸更均匀，这是不推荐的。此外，本试验方法适用于与待连接基材相比强度低或中等的接头。具有高强度的接头不应使用本试验方法进行试验，因为在反应点而不是接头中开始的断裂很可能导致无效试验。 使用本试验方法测定接头的剪切强度特别适用于先进陶瓷基复合材料，但也可能适用于整体先进陶瓷材料。 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 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 具体预防说明见 8.1 . 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 高级陶瓷可以作为需要高耐磨性和耐腐蚀性（通常在高温下）的结构应用的候选材料。 5.2 制作接头是为了提高材料的性能和适用性。虽然相似材料之间的接头通常用于制造复杂零件和维修部件，但通常生产涉及不同材料的接头，以利用新部件中每个成分的独特特性。根据连接过程，连接区域可能是组件的最弱部分。由于在混合模式和剪切荷载下，接缝上的荷载传递需要合理的抗剪强度，因此，在混合模式和剪切荷载下，接缝的质量和完整性至关重要- 量化平面剪力。还需要剪切强度数据来监测新的和改进的连接技术的发展。 5.3 剪切试验提供了剪切应力下材料强度和变形的信息。 5.4 该试验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。 5.5 出于质量控制目的，从标准化剪切试样得出的结果可被视为指示在给定的主要加工条件和后处理条件下所取材料的响应- 加工热处理。

1.1 This test method covers the determination of shear strength of joints in advanced ceramics at ambient temperature using asymmetrical four-point flexure. Test specimen geometries, test specimen fabrication methods, testing modes (that is, force or displacement control), testing rates (that is, force or displacement rate), data collection, and reporting procedures are addressed. 1.2 This test method is used to measure shear strength of ceramic joints in test specimens extracted from larger joined pieces by machining. Test specimens fabricated in this way are not expected to warp due to the relaxation of residual stresses but are expected to be much straighter and more uniform dimensionally than butt-jointed test specimens prepared by joining two halves, which is not recommended. In addition, this test method is intended for joints, which have either low or intermediate strengths with respect to the substrate material to be joined. Joints with high strengths should not be tested by this test method because of the high probability of invalid tests resulting from fractures initiating at the reaction points rather than in the joint. Determination of the shear strength of joints using this test method is appropriate particularly for advanced ceramic matrix composite materials but also may be useful for monolithic advanced ceramic materials. 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. Specific precautionary statements are noted in 8.1 . 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 ====== 5.1 Advanced ceramics can be candidate materials for structural applications requiring high degrees of wear and corrosion resistance, often at elevated temperatures. 5.2 Joints are produced to enhance the performance and applicability of materials. While the joints between similar materials are generally made for manufacturing complex parts and repairing components, those involving dissimilar materials usually are produced to exploit the unique properties of each constituent in the new component. Depending on the joining process, the joint region may be the weakest part of the component. Since under mixed-mode and shear loading the load transfer across the joint requires reasonable shear strength, it is important that the quality and integrity of joint under in-plane shear forces be quantified. Shear strength data are also needed to monitor the development of new and improved joining techniques. 5.3 Shear tests provide information on the strength and deformation of materials under shear stresses. 5.4 This test method may be used for material development, material comparison, quality assurance, characterization, and design data generation. 5.5 For quality control purposes, results derived from standardized shear 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.