The tension test at room temperature is used to study the size effect of thin copper sheet with different crystal size, different thickness and different strain rate.
对所制备的薄铜板进行了室温拉伸实验，研究薄铜板在不同晶粒大小、不同板厚和不同应变速率下的尺寸效应。
2
The disadvantage of sheet-light is divergent and can not make more small defects, and can only use thin crystal in experiment.
缺点是经圆柱透镜形成的片光具有发散性，不能制作小数量级的缺陷，并且实验中只能使用薄晶体。
3
It is found that the orientation of the sheet processed by ECAR is changed and the crystal orientation evolves from (0002) basal plane orientation to coexistence of basal plane and non-basal plane.