Tooth Root Bending Fatigue Performance of Shot Peening TM210A Steel Spur Gear

Table 4

Tooth root bending fatigue experimental data of the base material TM210A steel gear.

Experiment number	Methods	Stress level (MPa)	Fatigue life (cycles)	Comment
1	Group method	800	135997	Broken
2		800	117882	Broken
3		800	185918	Broken
4		700	231914	Broken
5		700	192639	Broken
6		700	298315	Broken
7		600	513020	Broken
8		600	386087	Broken
9		600	494337	Broken
10		600	540775	Broken
1	Staircase method	500	8497357	Broken
2		480	10000030	Run out
3		500	5354808	Broken
4		480	10000034	Run out
5		500	10000017	Run out
6		520	3688955	Broken
7		500	10000021	Run out
8		520	10000022	Run out
9		540	686134	Broken
10		520	10000022	Run out
11		540	3793367	Broken
12		520	10000019	Run out
13		540	10000022	Run out
14		560	10000022	Run out