Brittle Fracture of a Ductile Iron Brake Drum by Thermal-Contraction Overload
A 58.4 cm (23 in.) diam heavy-duty brake drum component of a cable-wound winch broke into two pieces during a shutdown period. Average service life of these drums was two weeks; none had failed by wear. The drums were sand cast from ductile iron. During haul-out, the cable on the cable drum drove the brake drum, and resistance was provided by brake bands applied to the outside surface of the brake drum. Friction during heavy service was sufficient to heat the brake drum, clutch mount, and disk to a red color. Examination of the assembly indicated that the brake...
Brittle Fracture of a Ductile Iron Brake Drum by Thermal-Contraction Overload, ASM Failure Analysis Case Histories: Material Handling Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.matlhand.c0047321
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