Failure of Nickel-Aluminum-Bronze Hydraulic Couplings, with Comments on General Procedures for Failure Analysis
Failures of various types of hydraulic couplings used to connect pipes in a naval vessel are described and used to illustrate some of the general procedures for failure analysis. Cracking of couplings, which were manufactured from nickel-aluminum- bronze extruded bar, occurred in both seawater and air environments. Cracks initiated at an unusually wide variety of sites and propagated in either longitudinal or circumferential directions with respect to the axis of the couplings. Fracture surfaces were intergranular and exhibited little or no sign of corrosion (for couplings cracked in air), and there was very limited plasticity. Macroscopic progression markings were...
S.P. Lynch, D.P. Edwards, R.B. Nethercott, J.L. Davidson, Failure of Nickel-Aluminum-Bronze Hydraulic Couplings, with Comments on General Procedures for Failure Analysis, ASM Failure Analysis Case Histories: Offshore, Shipbuilding, and Marine Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.marine.c9001617
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