通过原位拉伸试验台的应力应变传感器读取拉伸过程中的力位移曲线。由于原位拉伸要求拉伸中途拍照,停载的过程中发生应力松弛现象,通过应力应变曲线记录拍照次数。
The force-displacement curve during the tensile process is read through the stress-strain sensor on the in-situ tensile test bench. Since in-situ stretching requires taking photos during the stretching process, stress relaxation occurs during the loading stoppage. The number of photos taken is recorded through the stress-strain curve.