目的 为了更加精确地测量灰底白板纸和白卡纸的泊松比和弹性模量。方法 将数字图像相关方法与单向拉伸实验相结合。通过对灰底白板纸和白卡纸试样拉伸变形前后的图像进行分析， 测量其泊松比； 通过对灰底白板纸和白卡纸的力-位移曲线进行分析， 测量其弹性模量。结果 测得了定量为300， 400 g/m2的灰底白板纸的泊松比分别为0.281和0.245， 其弹性模量分别为154.47， 226.06 MPa；300， 400 g/m2的白卡纸的泊松比分别为 0.312 和 0.276， 其弹性模量分别为 209.09， 297.79 MPa。结论同种类别的纸张中， 定量越高， 其弹性模量越大， 而泊松比越小； 在定量相同的情况下， 白卡纸的泊松比和弹性模量都比灰底白板纸的大。

The aim of this work was to accurately measure the Poisson′ s ratio and Young′ s modulus of gray manila board and ivory board. The combination of digital image correlation method (DICM) and tensile test was used in this paper. The Poisson′ s ratio was measured by analyzing the images of the gray manila board and ivory board specimens before and after tensile deformation. And the Young′ s modulus was measured by analyzing the force-displacement curves of gray manila board and ivory board. The Poisson′ s ratio for gray manila board with ration of 300 and 400 g/m2 was 0.281 and 0.245, respectively, and the Young′ s modulus was 154.47 and 226.06 MPa, respectively. The Poisson′ s ratio for ivory board with ration of 300 and 400 g/m2 was 0.312 and 0.276, respectively, and the Young′ s modulus was 209.09 and 297.79 MPa, respectively. The higher ration corresponded to the higher Young′ s modulus and the lower Poisson′ s ratio for the same category of board. In the case of the same ration, the Young′ s modulus and Poisson′ s ratio of ivory board were higher than those of the gray manila board.