数字图像相关研究沥青混凝土裂缝扩展与愈合

Proceedings of The Eighteenth International Conference of Experimental Mechanics Pub Date : 2018-06-21 DOI:10.3390/ICEM18-05381

N. Hasheminejad, A. Margaritis, B. Ribbens, C. Vuye, J. Blom, W. V. D. Bergh, J. Dirckx, S. Vanlanduit

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引用次数: 4

摘要

沥青混凝土力学性能的准确测定在道路工程中具有十分重要的意义。计算这些特性的传统方法是使用液压/气动执行器和应变计进行实验，以施加应力并测量应变。然而，近十年来，光学测量技术在试样表面应变计算和表面裂纹检测方面得到了广泛的应用。本研究利用数字图像相关技术估计沥青试件表面的应变图，预测裂缝起裂位置，研究沥青混凝土内部的愈合现象。

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Digital image correlation to investigate crack propagation and healing of asphalt concrete

Accurate determination of the mechanical properties of asphalt concrete is very important in Road Engineering. The traditional method to calculate these properties is to run experiments using a hydraulic/pneumatic actuator and strain gauges to apply stress and measure the strain. However, in the last decade optical measurement techniques have become popular for strain calculation on the surface of the specimen and detecting the cracks on the surface. In this study, digital image correlation is used to estimate the strain map on the surface of an asphalt specimen, predict the location of crack initiation, and investigate the healing phenomenon in asphalt concrete.

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Proceedings of The Eighteenth International Conference of Experimental Mechanics

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