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Application of Digital Image Correlation (DIC) Method for Road Material Testing

机译:数字图像相关法在道路材料测试中的应用

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摘要

The theoretical part of the paper presents the framework of the digital image correlation (DIC) method as well as its advantages and limitations. The DIC technique that can be used in static and fatigue tests is a non-contact, non-interferometric optical method for measuring the surface deformation of structural elements, and material samples. In the experimental part of the paper, the implementation of the DIC method for the selected laboratory tests of building materials is described. The results of the tests on the samples of the materials used in road construction, i.e., asphalt mixtures (HMA), stone, soil stabilized with a hydraulic binder, and geosynthetics are discussed. The conducted research pointed out the possibilities of using the DIC method to evaluate the deformation of road materials in laboratory tests, taking into account their specificity. The variety of samples of tested material allowed to indicate the areas in which the DIC method and the algorithms used to evaluate the results give a significant advantage compared to tensometric measurement methods.
机译:本文的理论部分介绍了数字图像相关(DIC)方法的框架及其优点和局限性。可用于静态和疲劳测试的DIC技术是一种非接触,非干涉光学方法,用于测量结构元件和材料样品的表面变形。在本文的实验部分,描述了DIC方法在选定的建筑材料实验室测试中的实现。讨论了用于道路建设的材料(即沥青混合料(HMA),石材,用水硬性粘合剂稳定的土壤和土工合成材料)样品的测试结果。进行的研究指出了使用DIC方法评估道路材料在实验室测试中的变形的可能性,同时考虑到它们的特殊性。与张力测量方法相比,测试材料样品的多样性可以指示DIC方法和用于评估结果的算法在哪些领域具有显着优势。

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