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TECHNICAL PAPERS

Fatigue Crack Growth Life Prediction for Surface Crack Located in Stress Concentration Part Based on the Three-Dimensional Finite Element Method

[+] Author and Article Information
Y. Yamashita, K. Sakano

Structure and Strength Department, Research and Development, Ishikawajima-Harima Heavy Industries Co. Ltd., 1-banchi, Shinnakahara-cho, Yokohama 235-8501, Japan

M. Shinozaki, Y. Ueda

Aeroengine and Space Operations, Research and Engineering Division, Engine Technology Department, Ishikawajima-Harima Heavy Industries Co. Ltd., 3-5-1 Mukodai-cho, Nishitokyo-shi, Tokyo 188-8555, Japan

J. Eng. Gas Turbines Power 126(1), 160-166 (Mar 02, 2004) (7 pages) doi:10.1115/1.1619425 History: Received December 01, 2001; Revised March 01, 2002; Online March 02, 2004
Copyright © 2004 by ASME
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References

Figures

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Specimen with crack starter notch
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Fatigue crack growth test specimen
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Geometrical definition of surface crack
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Fatigue crack growth test facilities; (a) tensile test facility, (b) four-point bending test facility
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Fracture surface of bending and tension specimen; (a) bending specimen (No. B1), (b) tensile specimen (No. T1)
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Material properties of fatigue crack growth with CT specimens
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Example finite element mesh used in step by step finite element method (No. T2 specimen, 14 model)
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Finite element model used for influence function method (specimen No. B1, 14 model)
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Stress distribution by finite element analysis with no crack; (a) stress distribution along thickness direction, (b) stress distribution along plate width direction
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Linear approximation method
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Comparison between predicted results by step by step finite element method; (a) crack depth a, (b) crack surface length 2c
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Comparison between predicted results by influence function method and experiments; (a) crack depth a, (b) crack surface length 2c
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Comparison between predicted results by linear approximation method and experiments; (a) crack depth a, (b) crack surface length 2c
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Comparison between predicted results by the method using Newman and Raju equation based on nominal stress and experiments; (a) crack depth a, (b) crack surface length 2c
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Change trend of stress intensity factor range in each prediction method; (a) change trend of Ka, (b) change trend of Kc

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