金属材料SHPB实验数据处理的三波校核法

通过自编程序调整入射波、透射波和反射波的相对位置。当移动波相对位置时,程序界面显示2 幅图:一幅显示入射波、透射波、反射波以及透射波与反射波之差;另一幅显示试样的3条应力应变。这3条 曲线分别由第1幅图中的入射波与透射波、入射波与反射波以及三波法求得。根据SHPB实验的基本假定, 这3条应力应变曲线的塑性段应该一致,同时透射波与入射波之差应等于反射波,把这2个等价的特点作为 正确处理SHPB实验数据标准的方法称为三波校核法。

A three-wave coupling method for data treatment in SHPB experiments with metal samples

The relative positions of incident wave,transmission wave and reflection wave can be changed by the self-developed program.When the relative position of the waves is adjusted,the self-developed program gives two images.One image displays incident,transmission,reflection waves and the difference between transmission and incident waves.The other image lays out the three strain-stress curves of the specimen.The three curves are plotted separately through incident and transmission waves,incident and reflection ...