The fracture toughness of a thin-sheet V-1167RDTV aluminum alloy is investigated by digital image correlation method. The ways of correct estimation of the stress intensity coefficients obtained by calculating the displacement fields by the Williams equation are found. Buckling criteria are quantitatively determined, and a crack propagation resistance curve (R-curve) is plotted for static loading.

中文翻译：

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薄板铝合金静态断裂韧性与断裂强度的数字图像相关方法研究

采用数字图像相关方法研究了薄板V-1167RDTV铝合金的断裂韧性。找到了用威廉姆斯方程计算位移场得到的正确估算应力强度系数的方法。定量确定屈曲准则，并绘制静态载荷下的裂纹扩展阻力曲线（R曲线）。