A series of experiments has been performed to build a benchmark for the numerical modeling of mixed mode crack propagation in concrete. Two tests are selected so that the propagation is almost always stable although the material is quasi-fragile. Moreover the variation of mode mixity enables the study of the reorientation of the crack, as well as more complex phenomena such as branching or link-up. To control stability and mode mixity, the loading is imposed with a 6-axis testing machine while the crack propagation is assessed by full-field measurement. In this paper, a description of the experimental setup is provided as well as numerical simulation results illustrating the sensitivity to boundary conditions and geometry. Links to data needed to perform numerical simulations of these benchmark experiments are given, together with references to publications giving full descriptions of the protocol and experiment results.

中文翻译：

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CARPIUC基准测试概述：复杂载荷下的裂纹扩展，重新定向，扩展和萌生

已经进行了一系列实验，以建立混凝土中混合模式裂纹扩展数值模型的基准。选择了两个测试，以便尽管材料是准易碎的，但传播几乎总是稳定的。此外，模式混合的变化使得能够研究裂纹的重新定向以及更复杂的现象，例如分支或连接。为了控制稳定性和模式混合，使用6轴测试机施加载荷，同时通过全场测量评估裂纹扩展。在本文中，提供了对实验装置的描述以及数值模拟结果，这些结果说明了对边界条件和几何形状的敏感性。给出了进行这些基准实验的数值模拟所需的数据的链接，