Quantitative description of low-cycle fatigue damage accumulation in contact interaction zone by local strain evolution

Sviatoslav Eleonsky; Yury Matvienko; Vladimir Pisarev; Igor Odintsev

doi:10.3221/IGF-ESIS.62.37

Quantitative description of low-cycle fatigue damage accumulation in contact interaction zone by local strain evolution

Authors

Sviatoslav Eleonsky Mechanical Engineering Research Institute of the Russian Academy of Science (IMASH RAN). 4 M. Kharitonievsky Per., 101990 Moscow, Russia. https://orcid.org/0000-0003-4345-067X
Yury Matvienko Mechanical Engineering Research Institute of the Russian Academy of Science (IMASH RAN). 4 M. Kharitonievsky Per., 101990 Moscow, Russia https://orcid.org/0000-0002-3189-1438
Vladimir Pisarev Mechanical Engineering Research Institute of the Russian Academy of Science (IMASH RAN). 4 M. Kharitonievsky Per., 101990 Moscow, Russia.
Igor Odintsev Mechanical Engineering Research Institute of the Russian Academy of Science (IMASH RAN). 4 M. Kharitonievsky Per., 101990 Moscow, Russia

DOI:

https://doi.org/10.3221/IGF-ESIS.62.37

Keywords:

Damage accumulation, Local strain evolution, Reflection hologram interferometry

Abstract

The novel non-destructive method for quantitative description of low-cycle fatigue damage accumulation is expanded to a case of contact interaction in the stress concentration area. Investigated objects are plane aluminium specimens with the centred hole filled by cylindrical steel inclusion. The specimen is subjected to cyclic pull-push loading. The key point, that defines scientific novelty and powerfulness of the developed approach, consists of involving local deformation parameters as current damage indicators. Required strain values follow from distributions of all three displacement components along the filled hole edge measured by reflection hologram interferometry. The data, which are derived at different stages of low-cycle fatigue for the single specimen, provide normalized dependencies of local strain values from number of loading cycle, which are a source of damage accumulation functions. These functions are constructed for the specimen with the filled hole and geometrically analogous specimen with the open hole. Obtained data quantitatively describe a difference in damage accumulation rates for two cases.

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Published

22-09-2022

Issue

Vol. 16 No. 62 (2022): October 2022

Section

SI: Russian mechanics contributions for Structural Integrity

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Quantitative description of low-cycle fatigue damage accumulation in contact interaction zone by local strain evolution. (2022). Frattura Ed Integrità Strutturale, 16(62), 541-560. https://doi.org/10.3221/IGF-ESIS.62.37