Paper Titles
High-Value SLM Aerospace Components: From Design to Manufacture
p.135
Feasible Build Orientations for Self-Supporting Fused Deposition Manufacture: A Novel Approach to Space-Filling Tesselated Geometries
p.148
Materials and Engineering Design for Human Performance and Protection in Extreme Hot Conditions
p.169
Investigation of Dental Biomaterials under Load Using a Digital Image Correlation System
p.181
Assessment of the Effect of Pitting Corrosion on Fatigue Crack Initiation in Hydro Turbine Shaft
p.186
Crossed Helical Gears with Wheels Manufactured from Sintered Steel with Pyrohydrolysis
p.197
Nanoscale Material Characterization under the Influence of Aggressive Agents by Magnetic Force Microscopy and Opto-Magnetic Spectroscopy
p.209
Fullerene Based Nanomaterials for Biomedical Applications: Engineering, Functionalization and Characterization
p.224
Nanophotonic Rigid Contact Lenses: Engineering and Characterization
p.239

Assessment of the Effect of Pitting Corrosion on Fatigue Crack Initiation in Hydro Turbine Shaft

Article Preview

Abstract:

Energy efficiency is a key issue worldwide, and not confined solely to the realm of engineers. Past failures of mechanical power system components must be examined carefully in order to minimise future occurrences and increase energy efficiencies. Improved design procedures have been highly sought by engineers and researchers over the past few decades. The latest verified method with strong application potential within the power industry is that of the Theory of Critical Distances (TCD). TCD is not one method, but a group of methods that have a common feature; the use of a characteristic material length parameter, the critical distance L, for calculating the influence of notch-like stress raisers under static and fatigue loading. A case study from a hydro power plant turbine shaft was chosen to illustrate the development of this methodology. The paper illustrates the application of TCD to the fatigue life assessment of a turbine shaft with stress concentrations due to pitting corrosion.

You might also be interested in these eBooks
Advances in Engineering Materials, Product and Systems Design View Preview

Info:

Periodical:

Advanced Materials Research (Volume 633)

Pages:

186-196

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.633.186

Citation:

Cite this paper

Online since:

January 2013

Authors:

Radivoje Mitrovic, Dejan Momcilovic, Ivana Atanasovska

Keywords:

Corrosion, Crack Initiation, Fatigue, Hydro Turbine, Pitting, Shaft

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] N. Bachschmid, P. Pennacchi, E. Tanzi, Cracked Rotors - A Survey on Static and Dynamic Behavior Including Modelling and Diagnosis, Springer, Heidelberg-Berlin, 2010, p.9.

DOI: 10.1007/978-3-642-01485-7

Google Scholar

[2] D. Momcilovic, Z. Odanovic, R, I. Atanasovska T. Vuherer, Failure Analysis of Hydraulic Turbine Shaft, Eng. Fail. Anal, 20 (2012) 54-66.

DOI: 10.1016/j.engfailanal.2011.10.006

Google Scholar

[3] M.O. Popoviciu, I. Bordeasu, Analyzes of Fissures in Bulb Turbine Shafts, Machine Design, 3(4), ISSN 1821-1259, (2011) 233-240.

Google Scholar

[4] I. Bordeasu, M.O. Popoviciu, L. Marsavina, M. Voda, R. Negru, L.D. Pirvulescu, Numerical Simulation of Fatigue Cracks Initiation and Propagation for Horizontal Axial Turbine Shafts, The 20th DAAAM International Symposium, Intelligent Manufacturing & Automation: Theory, Practice & Education, Proceedings on CD, 25-28th November (2009).

Google Scholar

[5] I. Bordeasu, M.O. Popoviciu, D.M. Novac, Fatigue Studies upon Horizontal Hydraulic Turbine Shafts and Estimation of Crack Initiatioin, Machine Design, 1(1), ISSN 1821-1259, (2009) 183 – 186.

Google Scholar

[6] I. Atanasovska, R. Mitrović, D. Momčilović, Influence of transition section of shaft with flange on stress concentration factor, The 7th International scientific conference, Research and development of mechanical elements and systems, Zlatibor, Serbia, (2011).

Google Scholar

[7] GOST 977-88, Steel Castings. General Specification. (1988).

Google Scholar

[8] EN 10293, Steel castings for general engineering uses. (2005).

Google Scholar

[9] GOST 25. 502-79, Strength analysis and testing in machine building. Methods of metals mechanical testing. Methods of fatigue testing. (1979).

Google Scholar

[10] V.T. Troschenko, Fatigue resistance of metals and alloys, Naukova Dumka. (1987) p.668–70 [in Russian].

Google Scholar

[11] D. Taylor, Analysis of fatigue failures in components using the theory of critical distances, Engineering Failure Analysis, 12 (2005) 906–914.

DOI: 10.1016/j.engfailanal.2004.12.007

Google Scholar

[12] R.C. Brooks, Metallurgical failure analysis. McGraw-Hill, New York, 1993, pp.6-11.

Google Scholar

[13] D. Taylor, Applications of the theory of critical distances in failure analysis, Engineering Failure Analysis, 18 (2011) 543–549.

DOI: 10.1016/j.engfailanal.2010.07.002

Google Scholar

[14] D. Taylor, L. Susmel, Giornata IGF Forni di Sopra (UD), Italy, March 7-9, ISBN 978-88-95940-35-9 (2011) 129-135.

Google Scholar

[15] R.E. Peterson, Notch Sensitivity in: G. Sines, J.L. Waismas (Eds. ) Metal Fatigue, McGraw Hill, New York, 1959, pp.293-306.

Google Scholar

[16] H. Neuber, Theory of Notch Stresses, translation of 1957 Edition in German, Springer, Berlin, (1958).

Google Scholar

[17] S. Suresh, Fatigue of Materials, Cambridge University Press. ISBN 9780521578479 (1998) 30 -94.

Google Scholar

[18] M.H. El Haddad, N.E. Dowling, T.H. Topper and K.N. Smith, J Integral Applications for Sort Fatigue Crack at Notches, International Journal of Fracture. 16 (1980) 15-30.

DOI: 10.1007/bf00042383

Google Scholar

[19] D. Taylor, Theory of Critical Distances: A New Perspective in Fracture Mechanics, ISBN 978-0-08-044478-9, Elsevier Science, Oxford, (2007).

DOI: 10.1080/10426910801940417

Google Scholar

[20] D. Taylor, Geometrical effects in fatigue: A unifying theoretical model, Int. J. Fatigue. 21 (1999) 413–20.

DOI: 10.1016/s0142-1123(99)00007-9

Google Scholar

[21] I. Atanasovska, R. Mitrovic, D. Momcilovic, FEM model for calculation of Hydro turbine shaft, proceedings of the Sixth International Symposium KOD, Palić, Serbia, (2010) 183-188.

Google Scholar

[22] D.W. Hoeppner, C. A Arriscorreta, Exfoliation Corrosion and Pitting Corrosion and their Role in Fatigue Predictive Modeling: State-of-the-Art Review, International Journal of Aerospace Engineering. 2012, doi: 10. 1155/2012/191879.

DOI: 10.1155/2012/191879

Google Scholar

[23] S. Chattopadhyay, High Cycle Fatigue of Structural Components Using Critical Distance Methods, Proceedings of the SEM Annual Conference June 7-10, ISBN 978-1-4419-9497-4, The Society for Experimental Mechanics, Indianapolis, Indiana USA, (2010).

Google Scholar

[24] S. M. Tipton, J. R. Sorem, R. D. Rolovic, Updated Stress Concentration Factors for Filleted Shafts in Bending and Tension, Journal of Mechanical Design, Transactions of the ASME, Vol. 118, (1997), 321-327.

DOI: 10.1115/1.2826887

Google Scholar

[25] J. Shapiro, Streamlining shoulder-fillet stresses, MACHINE Design. com, (2009), 84-86.

Google Scholar