AGMA 93FTM9 PDF

Presents the results of gear tooth bending fatigue tests. Explores whether the combination of two types of measurement -- acoustic emissions and tooth compliance -- can help detect cracks early on (single tooth bending fatigue tests for several different gear materials were performed). Uses the two crack detection methods to describe fatigue test characteristics, such as the probable time of crack initiation, rate of crack propagation, and percent of total fatigue life spent in crack propagation phase. Presents the effects of materials and processing. Shows how crack detection can reveal the results of surface finish on fatigue.