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Static Tests of Wing Box of Composite Aircraft Wing Using Acoustic Emission and Strain Gaging

  • ACOUSTIC METHODS
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Abstract

Static tests of a two-spar T800 CFRP wing box have been carried out. The object was tested when loaded using the methods of acoustic emission (AE) and strain gaging. Strain in the material was determined in real time in the areas where strain gages were bonded (the panels of wing box, the walls of side members, and the shelves of stringers). The elements of the wing box have been established in which nonlinear strain change is observed and residual deformations are recorded after unloading. The AE method has been used to localize the sources of signals. The coordinates of the sources corresponded to the location of the third rib. Clustering recorded AE signals based on their digitized form has made it possible to group the signals and assign them to sources that correspond to structure failure. It is shown that in the process of loading the wing box, an increase in the structural coefficient of AE signals corresponding to CFRP delamination in the location zone is observed.

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Authors and Affiliations

  1. Siberian Aeronautical Research Institute Named after S.A. Chaplygin, 630051, Novosibirsk, Russia

    A. N. Ser’eznov, L. N. Stepanova, A. S. Laznenko, S. I. Kabanov, V. L. Kozhemyakin & V. V. Chernova

  2. Siberian Transport University, 630049, Novosibirsk, Russia

    L. N. Stepanova & V. V. Chernova

Authors
  1. A. N. Ser’eznov
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  2. L. N. Stepanova
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  3. A. S. Laznenko
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  4. S. I. Kabanov
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  5. V. L. Kozhemyakin
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  6. V. V. Chernova
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Corresponding author

Correspondence to L. N. Stepanova.

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Translated by V. Potapchouck

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Ser’eznov, A.N., Stepanova, L.N., Laznenko, A.S. et al. Static Tests of Wing Box of Composite Aircraft Wing Using Acoustic Emission and Strain Gaging. Russ J Nondestruct Test 56, 611–619 (2020). https://doi.org/10.1134/S1061830920080094

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  • DOI: https://doi.org/10.1134/S1061830920080094

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