Crack speed prediction in elastomer membranes under large strain (more than 150%) remains a delicate question which necessitates coupled experimental-theoretical investigations. In order to compare experimental results with theoretical approaches but also to improve the understanding of dynamic crack propagation in soft materials, a crucial step is the measurement and analysis of kinematic and energetic fields in the material configuration during dynamic fracture. In this way, the proposed set-up consists in a two-camera set-up in order to perform digital image correlation during both quasi-static loading and dynamic fracture of the sample. The variety of kinematic and energetic fields that can be computed is illustrated. Finally, two studies highlighting the promises of full-field measurements in large strain fracture mechanics are presented: the computation of the dynamic J -integral and the observation of mechanical waves during high speed crack growth in elastomer membranes.

中文翻译：

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弹性体膜动态断裂实验全场分析

弹性体膜在大应变（超过 150%）下的裂纹速度预测仍然是一个微妙的问题，需要结合实验-理论研究。为了将实验结果与理论方法进行比较，同时提高对软材料中动态裂纹扩展的理解，关键的一步是测量和分析动态断裂过程中材料配置中的运动场和能量场。通过这种方式，所提出的设置包括一个双摄像头设置，以便在样品的准静态加载和动态断裂期间执行数字图像相关。说明了可以计算的各种运动学和能量场。最后，提出了两项​​强调大应变断裂力学全场测量前景的研究：