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51315-6074-Analysis of Corrosion Damage on Propulsion Shafts of Marine Vessels

Picture for Analysis of Corrosion Damage on Propulsion Shafts of Marine Vessels
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Product Number: 51315-6074-SG
ISBN: 6074 2015 CP
Author: Moavin Islam
Publication Date: 2015
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The nickel aluminum bronze propulsion shafts of some marine vessels have been found to suffer wear and corrosion damage at the bearing/journal interface. This damage was manifested as a series of shallow circumferential grooves (varying in depth from 0.025 to 0.25 mm) as well as an overall reduction in shaft diameter. This paper presents some mathematical analysis to demonstrate how a non-existent (or poor) shaft ground can impact the magnitude of stray currents that can possibly explain the severe corrosion observed on these shafts. Other possible causes are also examined.Keywords: Marine vessels propulsion shaft corrosion Ni-Al-bronze stray currents
The nickel aluminum bronze propulsion shafts of some marine vessels have been found to suffer wear and corrosion damage at the bearing/journal interface. This damage was manifested as a series of shallow circumferential grooves (varying in depth from 0.025 to 0.25 mm) as well as an overall reduction in shaft diameter. This paper presents some mathematical analysis to demonstrate how a non-existent (or poor) shaft ground can impact the magnitude of stray currents that can possibly explain the severe corrosion observed on these shafts. Other possible causes are also examined.Keywords: Marine vessels propulsion shaft corrosion Ni-Al-bronze stray currents
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