Influence of void content and morphology on the creep behavior on glass/epoxy composites
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Data
2021-06-01
Autores
Alves, Fillip Cortat [UNESP]
Monticeli, Francisco Maciel [UNESP]
Neves, Roberta Motta
Voorwald, Herman Jacobus Cornelis [UNESP]
Cioffi, Maria Odila Hilário [UNESP]
Ornaghi, Heitor Luiz
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Resumo
This study aimed to evaluate the dynamic mechanical properties and the creep behavior of glass/epoxy composites containing different void contents. A 3D reconstruction using X-ray microtomography (MCT) was done to determine void content, position, and morphology. Moreover, dynamic mechanical analysis over a wide temperature range and creep tests using different temperatures (from 30 °C to 210 °C) and stress levels (1, 5, and 10 MPa) were conducted. It was found that the void content interfered with the stress transferring, noted by a decrease in the storage modulus in the glassy region and by a higher creep deformation. Moreover, as the composites pass through the glass transition region, a more abrupt decay is observed due to higher dissipation energy in a shorter time. The trend of creep behavior by temperature and stress level is equally affected by the void content and morphology.
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Creep behavior, Dynamic mechanical analysis, Void content
Como citar
Composites Communications, v. 25.