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Dynamic test and fatigue life evaluation of compressor blades

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Abstract

High-cycle fatigue (HCF) has been identified as one of the primary causes of gas turbine engine failure. To verify the reliability of the high cycle fatigue fracture of the 5 MW gas turbine engine blade being developed by Doosan Heavy Industries & Construction Co., Ltd., dynamic tests were conducted using real size compressor rigs according to previous studies. The dynamic safety margin of the 5MW gas turbine engine blade was calculated on the basis of the ratio between the dynamic stress and endurance limit stress respectively determined through the compressor rig and fatigue tests. The HCF characteristics and the fatigue life stability of the DGT-5 compressor blades were verified through these processes. A fatigue life design procedure for the gas turbine compressor blade was established on the basis of the design, analysis, and test processes implemented in a previous study. In sum, the 5 MW class gas turbine compressor blades were found to be well designed in terms of resonance stability and fatigue life.

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Authors and Affiliations

  1. Doosan Heavy Industries & Construction, 555, Changwon, Kyungnam, 641-712, Korea

    Kyungkook Kim

  2. Dept. of Mechanical Design Engineering, Chungnam National University, Seongnam, Korea

    Young Shin Lee

Authors
  1. Kyungkook Kim
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  2. Young Shin Lee
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Correspondence to Young Shin Lee.

Additional information

Recommended by Associate Editor Jin Weon Kim

Kyungkook Kim received his B.S. degree in Mechanical Engineering from the Korea Aerospace University, Korea in 2000. He received his master’s degree in Mechanical Design Engineering from Chungnam National University, Korea. He is currently working for Doosan Heavy Industries & Construction as a Senior Research Engineer. His research interests are in area of gas turbine design.

Young-Shin Lee received his B.S. degree in Mechanical Engineering from Yonsei University, Korea in 1972. He received his master’s and Ph. D. degrees in Mechanical Engineering from Yonsei University, Korea in 1974 and 1980, respectively. He is currently a professor of the Department of Mechanical Design Engineering at Chungnam National University, Korea. Prof. Lee’s research interests are in area of impact mechanics, optimal design, biomechanical analysis, and shell structure analysis.

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Kim, K., Lee, Y.S. Dynamic test and fatigue life evaluation of compressor blades. J MECH SCI TECHNOL 28, 4049–4056 (2014). https://doi.org/10.1007/s12206-014-0917-5

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  • DOI: https://doi.org/10.1007/s12206-014-0917-5

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