Fatigue Cracking of Two Crankshafts Due to Welding
Two diesel engine crankshafts of similar dimensions, the journal diam being approximately 7 in., failed due to cracking originating in the fillet at the junction between the crankpin and the web nearest to the flywheel. The cracks were discovered before rupture occurred. Several small cracks originated in the fillet, ran together and developed as two main crack fronts that ultimately merged into one, a typical example of a fatigue failure. Electromagnetic crack detection revealed the presence of a number of discontinuities which were located at a position that would correspond to the vertical axis of the original ingot. The...
Fatigue Cracking of Two Crankshafts Due to Welding, ASM Failure Analysis Case Histories: Offshore, Shipbuilding, and Marine Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.marine.c9001429
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