Strength and Fatigue Properties of Sandstone under Dynamic Cyclic Loading

Table 4

Strength and fatigue properties of sandstone under different loading amplitudes.

Loading amplitude; (kN)	Loading frequency; (Hz)	Loading speed; (kN/s)	Peak stress; (MPa)	Peak strain; (%)	Fatigue life; ()
15	1	1	110.15	1.627	223
30	1	1	88.27	1.467	132
60	1	1	73.92	1.320	57
90	1	1	67.15	1.211	42
120	1	1	63.9	1.184	17