论文标题
通过数字图像相关确定犬长长骨最终拉伸应变
Determination of Canine Long Bone Ultimate Tensile Strain by Digital Image Correlation
论文作者
论文摘要
创建有限的元素模型来模拟骨骼行为，裂缝的发生和传播需要用足够的机械数据为系统喂养。迄今为止，对长犬骨的机械行为知之甚少，在建模骨折场景的情况下，仍需要确定失败的最终应变。从人类文献或其他物种中推断出来，因为预期物种之间的机械性能差异（Vahey等，1987）[1]。我们的目的是通过数字图像相关性（DIC）测量犬长骨头的最终拉伸应变，这是一种用于测量负载下应变的光学技术，以及用于我们目的的有希望的测量方法。进行了整个骨骼的皮质骨条和屈曲测试的张力测试，并测量了最终的拉伸应变，并在不同的试样和测试场景之间进行了比较。
Creating finite element models for simulation of bone behaviour, fracture occurrence and propagation requires feeding the system with adequate mechanical data. To date, little is known about the mechanical behaviour of long canine bones, and in cases of modelling a bone-breakage scenario the ultimate strain at failure still needs to be determined. Extrapolation from human literature or other species is uninteresting as differences of mechanical properties between species are expected (Vahey et al, 1987) [1]. Our purpose was to measure the ultimate tensile strain of canine long bones by Digital Image Correlation (DIC), an optical technique to measure strain under load and a promising measurement method for our purpose. Tension tests of cortical bone strips and flexion tests of entire bones were performed, and the ultimate tensile strain was measured and compared between different specimen and testing scenarios.
