The mechanical and fracture properties of refractory ceramics are determined by means of an inverse identification procedure between experimental data and numerical simulations. An experimental set-up is proposed to perform Wedge Splitting Tests (WST) at elevated temperature with Digital Image Correlation (DIC) to assess the crack propagation. The ceramic Young’s Modulus, fracture energy and strength are determined by indirect confrontation to Finite Element simulations of crack propagation in WST specimens employing Cohesive Zone Modeling (CZM). The variations of the force and crack length are used to set an inverse problem for estimating the material parameters for various temperatures. The method, illustrated through the analysis of an industrial refractory ceramic from 25°C to 1200°C, combines experimental and numerical approaches to understand and optimize the fracture behaviour of refractories in application.

中文翻译：

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通过高达 1200°C 的数字图像相关性识别耐火材料的断裂和内聚参数

耐火陶瓷的机械和断裂性能是通过实验数据和数值模拟之间的逆识别程序确定的。提出了一种实验装置，用于在高温下使用数字图像相关性 (DIC) 进行楔形分裂测试 (WST)，以评估裂纹扩展。陶瓷杨氏模量、断裂能和强度是通过间接对抗 WST 试样中裂纹扩展的有限元模拟来确定的，这些模拟采用内聚区建模 (CZM)。力和裂纹长度的变化用于设置逆问题，以估计各种温度下的材料参数。该方法通过对 25°C 至 1200°C 的工业耐火陶瓷进行分析来说明，