Impact Damage Influence Investigations on the Composite Skin-Stringer Joint Fatigue Characteristics Under Conditions of Vibroacoustic Loading

S. V. Dubinskii; Дубинский С. В.; F. S. Sevastyanov; Севастьянов Ф. С.; V. M. Kostenko; Костенко В. М.; S. L. Denisov; Денисов С. Л.

doi:10.31857/S0320791922600512

Impact Damage Influence Investigations on the Composite Skin-Stringer Joint Fatigue Characteristics Under Conditions of Vibroacoustic Loading

Authors: Dubinskii S.V.¹, Sevastyanov F.S.¹, Kostenko V.M.¹, Denisov S.L.¹
Affiliations:
1. Central Aerohydrodynamic Institute, 140181, Zhukovsky, Russia
Issue: Vol 69, No 2 (2023)
Pages: 261-269
Section: ФИЗИЧЕСКИЕ ОСНОВЫ ТЕХНИЧЕСКОЙ АКУСТИКИ
URL: https://journal-vniispk.ru/0320-7919/article/view/134433
DOI: https://doi.org/10.31857/S0320791922600512
EDN: https://elibrary.ru/ITFWCI
ID: 134433

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Abstract

The article presents the results of studying the fatigue characteristics of skin–stringer joints (T‑samples) made of a polymer composite material subjected to random vibroacoustic loading with a wide spectrum. Experimental data were analyzed to determine the damage initiation and growth mechanisms, as well as the criterion and failure mode for samples with and without impact damages. The effect of impact damage on the fatigue characteristics of the test samples at different impact energies and vibroacoustic loading levels is demonstrated. The main patterns of the influence of defects on the fatigue characteristics are revealed, which can be used in the future in creating computational models for damage development in structures made of the polymer composite material under vibroacoustic loading.

Keywords

vibroacoustic loading, dynamic response, S-N curve, impact damage, polymer composite material (PCM)

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