PSI - Issue 47

Artur Mugatarov et al. / Procedia Structural Integrity 47 (2023) 654–659 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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4. Conclusions • Experimental data of the GFRP strength decrease under various loading conditions and layouts was obtained. • Approximation of experimental data using various models was carried out. • A significant influence of the loading conditions and the composite layout on the fatigue sensitivity curves and the damage value derivative curves was revealed. • Further modification of the models for usage under various loading conditions is planned. Acknowledgements The work was carried out in Perm National Research Polytechnic University with financial support of grant of President of Russian Federation for government support of young Russian scientists (No MK-1545.2022.4). References Carraro, P.A., Quaresimin, M., 2018. Fatigue damage and stiffness evolution in composite laminates: a damage-based framework. Procedia Engineering 213, 17 – 24. Lobanov, D.S., Staroverov, O.A., 2019. The fatigue durability GFRP under increased temperatures. Procedia Structural Integrity 17, 651 – 657. Mao, H., Mahadevan, S., 2002. Fatigue damage modelling of composite materials. Composite Structures 58, 405 – 410. Philippidis, T.P., Passipoularidis, V.A., 2007. Residual strength after fatigue in composites: Theory vs. experiment. International Journal of Fatigue 29 (12), 2104 – 2116. Staroverov, O.A., Mugatarov, A.I., Yankin, A.S., Wildemann, V.E., 2023. Description of fatigue sensitivity curves and transition to critical states of polymer composites by cumulative distribution functions. Frattura ed Integrità Strutturale 63, 91 – 99. Staroverov, O.A., Wildemann, V.E., Tretyakov, M.P., Yankin, A.S., 2019. Experimental study of the influence of preliminary complex mechanical loads on the deformation and strength properties of polymer composites. Procedia Structural Integrity 18, 757 – 764. Van Paepegem, W., Degrieck, J., 2002. Coupled residual stiffness and strength model for fatigue of fibre-reinforced composite materials. Composites Science and Technology 62 (5), 687 – 696. Wildemann, V.E., Staroverov, O.A., 2021. Deformation and failure of polymer composites with different layouts under preliminary cyclic and quasi-static loads. IOP Conference Series: Materials Science and Engineering 1023, 012029. Wildemann, V.E., Staroverov, O.A., Tretyakov, M.P., 2020. Deformation and failure of polymer composite materials under preliminary cyclic and low-velocity impacts. IOP Conference Series: Materials Science and Engineering 747, 012034 Wil’deman , V.E., Staroverov, O.A., Lobanov, D.S., 2018. Diagram and parameters of fatigue sensitivity for evaluating the residual strength of layered GFRP composites after preliminary cyclic loadings. Mechanics of Composite Materials 54 (3), 313 – 320.