Mechanism Analysis of Spalling Defect on Rail Surface under Rolling Contact Conditions

Table 2

Predicted propagation angles of the cracks based on the maximum circle tensile stress criterion.

Crack length; /mm	Axle load; /t	/MPa·m^0.5	/MPa·m^0.5	/MPa·m^0.5	Initial angle; of the crack/°	Turning angle; of the crack/°	Propagation angle of the crack/°
0.3	10	23.44	0.31	23.13	60	70.78	130.78
0.4	10	25.04	0.00	25.04	60	70.53	130.53
0.5	10	25.91	0.00	25.91	60	70.53	130.53
0.3	15	52.69	37.51	15.18	60	114.57	174.57
0.4	15	48.03	36.79	11.24	60	124.49	184.49
0.5	15	42.58	1.61	40.97	60	71.28	131.28
0.3	20	72.73	53.46	19.27	60	118.60	178.60
0.4	20	67.78	51.14	16.64	60	122.23	182.23
0.5	20	58.36	45.44	12.92	60	127.06	187.06