3D digital image correlation analysis of medium velocity soft impacts on laminated composite

IF 3.2 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Forces in mechanics Pub Date : 2023-11-08 DOI:10.1016/j.finmec.2023.100245

O. Dorival , P. Navarro , S. Marguet , J.-F. Ferrero

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Abstract

In aerospace acamedic and industrial world, soft impacts are commonly used to replace bird strike tests for the validation of materials and structures as well as the calibration of numerical models. However in general, the analysis reported show only a few part of the experimental information available. In this paper, three laminate composites made of epoxy resin reinforced by glass or carbon fibres are tested under gelatin impact at several velocities up to complete failure. A detailed analysis based on 3D Digital Image Correlation (3D DIC) and visual inspection of the three laminates is provided for a total of 21 tests with impact velocities in the range 60–112 m/s. DIC extraction provides accurate quantitative displacement fields of the rear face in both time and space. Moreover, specific failure scenarios are identified for each laminate. The results obtained provide a suitable database for the development of numerical models. In addition, all experimental data from DIC extractions are opened to the readers on the Recherche Data Gouv website for comparisons with their own tests or numerical models.

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层合复合材料中速软冲击的三维数字图像相关分析

在航空航天、学术和工业领域，软冲击通常用于替代鸟击试验，以验证材料和结构以及校准数值模型。然而，总的来说，报告的分析只显示了可用的实验信息的一小部分。本文对三种由玻璃纤维或碳纤维增强的环氧树脂制成的层压复合材料在明胶冲击下以不同的速度进行了测试，直到完全失效。基于三维数字图像相关(3D DIC)和目视检测，对三种层压板进行了21次冲击速度在60-112 m/s范围内的测试，并进行了详细分析。DIC提取可在时间和空间上提供精确的定量后面部位移场。此外，还确定了每个层压板的具体失效情况。所得结果为数值模型的开发提供了合适的数据库。此外，所有DIC提取的实验数据都在Recherche data Gouv网站上向读者开放，以便与他们自己的试验或数值模型进行比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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