研究薄板的变形情况,必须确定其位移、斜率以及应变。到目前为止,测量薄板弯曲变形的方法很多。例如,首先利用各种全息、散斑或云纹法测出薄板变形的位移量,然后对其进行微分,从而得到薄板弯曲的斜率,但误差较大。还可以利用散班剪切干涉法求得其斜率。影象云纹技术可以用于测量整个结构的变形。P.M.Boone等将 To study the deformation of a thin plate, its displacement, slope and strain must be determined. So far, there are many ways to measure sheet bending deformation. For example, the hologram, speckle or moiré method is used to measure the displacement of the sheet and then differentiate it to obtain the curvature of the sheet, but the error is larger. You can also use the scattered shear interference method to obtain the slope. Image moiré technology can be used to measure the deformation of the entire structure. P.M. Boone and others will