AE Source Location in Bending Fatigue Process of Carburizing Spur Gear

It is important for the prevention of malfunction and accident due to by failure to detect failure in revolving devices as early as possible. The acoustic emission (AE) method is expected as means to detect leading to an abnormal phenomenon in revolving devices. Although research on gears using the AE method has been reported, little research has been conducted where the AE method is applied to running gears in a bending fatigue process of spur gear teeth. Therefore, in this report, with two micro AE sensors attached to the side of the gear, AE was measured in a bending fatigue process of a carburizing gear using a power circulating-type machine and AE source location in gear teeth was accomplished. By various analysis of the data, the AE characteristics in the fatigue damaging process of the gear tooth were determined.