回弹形变测试方法研究。利用万能拉力试验机，试验时万能拉力试验机压杆装置进行压力加载，将支撑夹具和试样置于调好的平台上，调节下压位置，对准压杆中心，并确保紧密接触。按同等速度设置压杆装置，将数据采集清零，开始试验，加载压力，下压过程分别进行压力5000N和2500N，记录两次试验的最大压力、最大位移数值；卸去压力后，试样静止2分钟，测量回弹后产生位移，并记录试验数据。

Research on testing method of rebound deformation. Use the universal tensile testing machine. During the test, the pressure bar device of the universal tensile testing machine is used for pressure loading. Place the supporting fixture and sample on the adjusted platform, adjust the pressing position, align the center of the pressure bar, and ensure close contact. Set the pressure bar device at the same speed, clear the data acquisition, start the test, load the pressure, and press down the pressure 1600N and 3500N twice respectively, and record the maximum pressure and maximum displacement values of the two tests; After the pressure is removed, the sample is still for 2 minutes, the displacement after rebound is measured, and the test data is recorded.