精细陶瓷(高级陶瓷、高级技术陶瓷).室温下整体陶瓷薄板断裂韧性的试验方法

[中文适用范围]： 本文件描述了采用单边预裂纹板法或单边V型缺口板法测定整体陶瓷薄板室温断裂韧性的试验方法。 本文件旨在用于整体陶瓷和晶须或颗粒增强陶瓷，这些陶瓷被认为是宏观均匀的。 它不包括连续纤维增强陶瓷复合材料。 本文件适用于厚度为 0.2 mm 至 0.2 mm 的陶瓷薄板 [外文原描述]： This document describes a test method for the determination of the fracture toughness of monolithic ceramic thin plates at room temperature by the single-edge precracked plate method or the single-edge V-notch plate method. This document is intended for use with monolithic ceramics and whisker- or particulate-reinforced ceramics which are regarded as macroscopically homogeneous. It does not include continuous-fibre-reinforced ceramics composites. This document is applicable to ceramic thin plates with a thickness of 0,2 mm to <1,0 mm. The single-edge V-notch plate method can be applied to monolithic ceramics with a grain size larger than about 1 μm. The use of this method is inappropriate for yttria tetragonal zirconia polycrystal material (Y-TZP), which consists of homogeneous fine submicron grains. The method might also be unsuitable for some other very tough or soft ceramics in which a sharp crack does not form at the root of the V-notch. This document is for material development, material comparison, quality assurance, characterization, reliability and design data generation.