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A formula for the crack opening level under random loading in 2024-T351 aluminum alloy

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Abstract

Based on the fatigue crack growth results of the previous work for 2024-T351 aluminum alloy, the crack closure behavior under random loading was analyzed, and the correlation between the crack opening ratio and the stress ratio under random loading was discussed. The crack opening ratio under random loading can be expressed as a function of the stress ratio for the largest load cycle in a random load history. The correlation obtained is found to provide good predictions for crack growth under random loading.

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Authors and Affiliations

  1. School of Mechanical Design Engineering, Chonnam National University, Yosu, Chonnam, 550-749, Korea

    Chung-Youb Kim

  2. Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Korea

    Ji-Ho Song

Authors
  1. Chung-Youb Kim
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  2. Ji-Ho Song
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Correspondence to Chung-Youb Kim.

Additional information

Recommended by Associate Editor Jin Weon Kim

Chung-Youb Kim is a professor at the School of Mechanical Design Engineering at Chonnam National University in Yosu, Korea. He received his B.S. from Korea University in 1986, and M.S. and Ph.D. from Korea Advanced Institute of Science and Technology in 1986 and 1993, respectively. His research interest is the fatigue strength evaluation of bulk and thin film materials.

Ji-Ho Song is now a professor emeritus in Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST). He has published several books: Fundamentals of Mechanical Drawings, 2003. Fatigue Crack, Japanese Edition, 2005, Korean Edition, 2006. An Introduction to Reliability Engineering in Mechanical Design, 2007. Dictionary of Fatigue Fracture and Fatigue Strength of Materials (FatiguePedia of Materials), 2011.

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Kim, CY., Song, JH. A formula for the crack opening level under random loading in 2024-T351 aluminum alloy. J Mech Sci Technol 28, 521–525 (2014). https://doi.org/10.1007/s12206-013-1119-2

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  • DOI: https://doi.org/10.1007/s12206-013-1119-2

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