PSI - Issue 68

M. Totaro et al. / Procedia Structural Integrity 68 (2025) 197–204

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M. Totaro et al. / Structural Integrity Procedia 00 (2025) 000–000

4. Conclusions In this work, the energy release of Basalt Fibre reinforced composited were monitored during static tensile and stepwise fatigue tests. The mechanical properties have been assessed in terms of strength and fatigue limit. Additionally, the Static Thermographic Method was applied to investigate the limit stress, which can be conceived as the first damage initiation within the material. To verify the limit stress, stepwise fatigue tests were conducted with a stress ratio of R=0.1, and the fatigue limit was determined using the Risitano Thermographic Method. The average limit stress was evaluated as the stress level at which the temperature deviates from its initial linear trend, yielding a value of "#$ = 100.97 ± 7.73 MPa. The fatigue limit of the material determined by TM is % '%.) = 96.5 ± 0.2 MPa. The limit stress evaluated with STM aligns well with the fatigue limit range assessed by TM. Thus, energy methods can be valuable tools for a rapid evaluation of the fatigue properties of BFRC composites, which are emerging as optimal materials in the upcoming mechanical design scenario, particularly in the wind and marine sectors. These preliminary results suggest that basalt composites exhibit properties comparable to, or even superior, those of glass fibre reinforced composites, which currently dominate these sectors. Therefore, our next study will present a detailed comparison with the characterization of vinylester composites reinforced with glass fibres, highlighting the potential of BFRC as sustainable alternative to fiberglass in various applications. Acknowledgements The authors would like to thank the financial supports of Ministry of Economic Development on the resources provided by the Decree 5 March 2018 Chapter III, as part of the project “Development of Ahead Systems and Processes for Highly Advanced Technologies for low Magnetic Signature and Highly efficient Electromagnetic shielded ecofriendly vessel – DAS PHANTOMSHIFFE”, grant number F/190001/01/X44 References Balaji, K. V., Kamyar, S., Guru S. Rajan, Amanda V. Ellis, Minoo Naebe, 2020. Surface Treatment of Basalt Fiber for Use in Automotive Composites. Materials Today Chemistry 17, 100334. https://doi.org/10.1016/j.mtchem.2020.100334. Borsellino, C., Chairi, M., El Bahaoui, J., Favaloro, F., Galantini, F., Di Bella, G., 2023. Static Indentation Properties of Basalt Fiber Reinforced Composites for Naval Applications. Materials Research Proceedings 35, 350–358. https://doi.org/10.21741/9781644902714-42. Colombo, C., Vergani, L., Burman, M., 2012. 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