The cruciform biaxial tensile experiment method was also developed, where the strain in two directions in the central square section is measure by two cross set scale meters.

• 建立了十 字形双向拉伸试验研究方法， 利用引伸实现了试件中心区两轴变形的动态测量，编制了相应的测控 软件，实现了位移和拉力比例加载及非比例加载。