Experiments on ionic polarization effect are done to prove the micro mechanism . ( 3 ) an electrical circuit model based on mechano - electric effect is supposed . using this model , the principle of measurement is described ( 3 )針對混凝土在載荷作用下的力電響應,提出了混凝土在有源情形下的電學模型,根據這一模型給出了混凝土力電效應的測試原理。