In the last eight decades, considerable modelling and computational efforts have been made to predict the strain rate during cutting with the aim of optimizing machining processes. However, the validation of these modelling approaches on a local scale remains excessively limited due to the lack of in-situ measurements and the faulty existing quick-stop tests. This work presents the in-process analysis of the strain rate and strain in the primary shear zone using high speed Digital Image Correlation (DIC) techniques. The comparison of measured and computed results shows the suitability of the DIC techniques and the robustness of the modelling approaches.

中文翻译：

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金属切削应变率数字图像相关分析与建模

在过去的八年里，为了优化加工过程，人们进行了大量的建模和计算工作来预测切削过程中的应变率。然而，由于缺乏现场测量和现有的快速停止测试错误，这些建模方法在局部范围内的验证仍然非常有限。这项工作介绍了使用高速数字图像相关 (DIC) 技术对主剪切区中的应变率和应变进行的过程分析。测量和计算结果的比较显示了 DIC 技术的适用性和建模方法的稳健性。