Determining Tensile Strength of Rock by the Direct Tensile, Brazilian Splitting, and Three-Point Bending Methods: A Comparative Study

Table 4

Stress value of the split tensile specimens in specific positions.

Position	The relationship between position coordinates and force points								Remarks
	x	y			(°)	(°)
O	0	0	0.5 d	0.5 d	0	0
A	0.25 d	0	0.559 d	0.559 d	26.57	26.57
B	0	0.25 d	0.75 d	0.75 d	0	0
C	0.5 d	0	0.707 d	0.707 d	45	45	0	0
E	0	0.5 d	0	d	0	0		Stress concentration