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Investigation of Fatigue Failures of Titanium Alloy Blades Used in Compressor Modules of Aeroderivative Industrial Gas Turbines

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Abstract

Gas turbine axial compressor blades are designed to withstand cyclic stress loading resulting of modal vibrations. However, when surface suffers from foreign object damage, a fatigue crack is likely to initiate. In this paper two failure case-studies of titanium alloy used for aeroderivative gas turbine compressor blades are presented. Both are related to a failure of first stage compressor blades coming from different turbine power ranges. Observed cracks were found at blade spans corresponding to modal vibrations.

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Authors and Affiliations

  1. Warsaw Institute of Aviation, Warsaw, Poland

    M. Jasiczek

  2. General Electric Company Polska Sp. z o. o., Warsaw, Poland

    D. Szcześniak & J. Kaczorowski

  3. General Electric Nuovo Pignone S.r.l., Florence, Italy

    M. Innocenti

Authors
  1. M. Jasiczek
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  2. D. Szcześniak
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  3. J. Kaczorowski
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  4. M. Innocenti
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Correspondence to M. Jasiczek.

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Jasiczek, M., Szcześniak, D., Kaczorowski, J. et al. Investigation of Fatigue Failures of Titanium Alloy Blades Used in Compressor Modules of Aeroderivative Industrial Gas Turbines. J Fail. Anal. and Preven. 13, 689–696 (2013). https://doi.org/10.1007/s11668-013-9752-8

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  • DOI: https://doi.org/10.1007/s11668-013-9752-8

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