PSI - Issue 57

Dr.-Ing. D. Jbily et al. / Procedia Structural Integrity 57 (2024) 199–216 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

207

9

REF Pinion

SP Pinion

(32 hours) 4.32*10 6 cycles

(32 hours) 4.32*10 6 cycles

(65.5 hours) 8.85*10 6 cycles 6 cycles Fig. 7. Evolution of micropitting to Macropitting/spalling on the teeth flank of REF and SP pinions (59 hours) 7.97*10

SP Pinion

109 hours (14.39*10 6 cycles)

79 hours (10.43*10 6 cycles)

129 hours (17.03*10 6 cycles)

139 hours (18.35*10 6 cycles)

219 hours (28.91*10 6 cycles) 239 hours (31.55*10 6 cycles) Fig. 8. Evolution of micropitting to macropitting on shot peened gears after 70 hours of running