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Controlling Stress Intensity Factors During a Fatigue Crack Propagation Using Digital Image Correlation and a Load Shedding Procedure

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Abstract

Digital Image Correlation is used for controlling load shedding fatigue crack propagation. A specific algorithm is used to perform Stress Intensity Factors (SIFs) and crack length estimation in real time. Crack length measurements are validated by comparison with potential drop technique. SIFs results are compared with more common techniques using standard analytical formula considering confined plasticity at the crack tip. The proposed non-contact method is shown to be a powerful tool to control crack propagation.

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Authors and Affiliations

  1. CNRS, INSA-Lyon, LaMCoS UMR5259, Université de Lyon, 69621, Villeurbanne Cedex, France

    E. Durif, J. Réthoré, A. Combescure & P. Chaudet

  2. CNRS, INSA-Lyon, MATEIS UMR5510, Université de Lyon, 69621, Villeurbanne Cedex, France

    M. Fregonese

Authors
  1. E. Durif
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  2. J. Réthoré
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  3. A. Combescure
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  4. M. Fregonese
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  5. P. Chaudet
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Correspondence to E. Durif.

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Durif, E., Réthoré, J., Combescure, A. et al. Controlling Stress Intensity Factors During a Fatigue Crack Propagation Using Digital Image Correlation and a Load Shedding Procedure. Exp Mech 52, 1021–1031 (2012). https://doi.org/10.1007/s11340-011-9552-6

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  • DOI: https://doi.org/10.1007/s11340-011-9552-6

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