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Determination of the Crack Tip Position by Digital Image Correlation during Static and Cyclic Fracture Toughness Tests of Aluminum Alloys

  • DIAGNOSTICS AND MECHANICAL TEST TECHNIQUES
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Russian Metallurgy (Metally) Aims and scope

Abstract

Aluminum alloy V-1167RDTV specimens 1 mm thick with a central crack are used to determine the position of the tip of a mode I crack from a strain field distribution during cyclic loading in the course of fatigue crack growth rate tests and during static loading in determining the force characteristics of fracture toughness. When analyzing the displacement and strain distributions at the crack tip, we proposed a technique to measure the length of a statically growing crack to determine critical stress intensity factor Kc for a mode I crack in plane-stress state.

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ACKNOWLEDGMENTS

This work was performed in terms of problem 2.2 Certification and Study of Materials in Strategic Directions of Designing Materials and Technologies of Their Processing up to 2030.

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Authors and Affiliations

  1. All-Russia Institute of Aviation Materials, 105005, Moscow, Russia

    V. V. Avtaev, N. O. Yakovlev, V. S. Erasov & N. Yu. Podzhivotov

Authors
  1. V. V. Avtaev
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  2. N. O. Yakovlev
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  3. V. S. Erasov
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  4. N. Yu. Podzhivotov
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Correspondence to V. V. Avtaev.

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Translated by K. Shakhlevich

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Avtaev, V.V., Yakovlev, N.O., Erasov, V.S. et al. Determination of the Crack Tip Position by Digital Image Correlation during Static and Cyclic Fracture Toughness Tests of Aluminum Alloys. Russ. Metall. 2019, 458–465 (2019). https://doi.org/10.1134/S0036029519040025

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  • DOI: https://doi.org/10.1134/S0036029519040025

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