Authors: Atanasovska, Ivana 
Jelić, Miloš
Mitrović, Radivoje
Momčilović, Dejan
Title: The influence of corrosion on stress concentration factor at shaft to flange radius
Journal: Mechanisms and Machine Science
Volume: 13
First page: 657
Last page: 666
Conference: 4th International Conference on Power Transmissions, PT 2012; Sinaia; Romania; 20 June 2012 through 23 June 2012
Issue Date: 1-Jan-2013
Rank: M33
ISBN: 978-94-007-6557-3
ISSN: 2211-0984
DOI: 10.1007/978-94-007-6558-0_53
This paper describes the influence of corrosion on stress concentration factor and crack initiation at shaft-flange transition section. The real turbine shaft failure case study is used for research. This case study and numerical calculations show that the seal box solution led to constant leakage of river water in the zone of critical radius and resulted in corrosion fatigue cracks and turbine shaft failure. Thus, the Finite Element Analysis is performed to calculate the stress concentration factor increase as a result of corrosion occurrence. The corrosion at shaft-flange transition section is modelled in the zone with maximum stresses with a corrosion pit dimensioned to comply with real in situ dimension of pits. The presented research points new trends in stress concentration factor calculation. The obtained numerical results for maximum stress and stress concentration factor in critical zone confirmed failure analysis study outcome.
Keywords: Corrosion | FEA | Shafts | Stress concentration
Publisher: Springer Link
Project: Development of Methodology for Improvement of Operational Performance, Reliability and Energy Efficiency of Machine Systems used in the Resource Industry 

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