Dynamic Mechanical Characteristics of Impact Rock under the Combined Action of Different Constant Temperatures and Static and Dynamic Loads

Table 2

Digital image correlation analysis parameters for the fine sandstone surface displacement.

Sample	Impact experiment parameters			Impact test parameters DIC processing parameters
	Temperature (°C)	Bullet incident velocity (m/s)	Dynamic load action time (ms)	CCD acquisition frequency (Hz)	Resolution (pixel)	Subset	Step
S1	18	1.31	0.788	14000	640 × 480	21	10