Brittle Cracking of a Cylindrical Spiral Gear of Axle Gearbox
A cylindrical spiral gear, part of a locomotive axle assembly, cracked ten days after it had been press-fit onto a shaft, after which it sat in place as other repairs were made. Workers at the locomotive shop reported hearing a sound, and upon inspecting the gear, found a crack extending radially from the bore to the surface of one of the tooth flanks. The crack runs the entire width of the bore, passing through an oil hole in the hub, across the spoke plate and out to the tip of one of the teeth. Design requirements call for the...
Yu-zhou Gao, Xiao-lei Xu, Zhi-wei Yu, Brittle Cracking of a Cylindrical Spiral Gear of Axle Gearbox, Handbook of Case Histories in Failure Analysis, Vol 3, Edited By Larry Berardinis, ASM International, 2019, p 647–654, https://doi.org/10.31399/asm.fach.v03.c9001844
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