数字图像相关测量技术及其应用

数字图像相关法是一种可广泛应用于生物材料力学测试的光学非接触方法。介绍了该方法的原理和位移应变测量的基本测量步骤，并给出了三个实验例证。第一个例子讲述了该方法应用于牛心动脉（生物软组织材料）应力应变测试；第二个例子讲述了该方法用于测量牙本质（生物硬组织材料）断裂韧性，最后一个例子是该方法用于在微观尺度上测量牙本质的收缩变形。

Digital Image Correlation: Theory and Applications

Digital image correlation (DIC) is a non-contact optical method, which can be widely applied to characterization of mechanical behavior of biological materials. This paper described the basic processes of this method in determining the displacement and strain components. Three applications were presented to illustrate how this technique was applied. The first application was to evaluate the mechanical behavior of the bovine artery (soft tissue). The second was to identify the fracture toughness of human dentin (hard tissue). The last was an example to measure shrinkage strain of human dentin at microscopic scale.