Hybrid-permeability model evaluation through concepts of tortuosity and resistance rate: Properties of manufactured hybrid laminate

Autor(es)

Monticeli, Francisco Maciel ^[1] ; da Silva Monte Vidal, Dielly Cavalcanti ^[1] ; Shiino, Marcos Yutaka ^[2] ; Cornelis Voorwald, Herman Jacobus ^[1] ; Hilario Cioffi, Maria Odila ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, UNESP, Guaratingueta Sch Engn, Fatigue & Aeronaut Mat Res Grp, Dept Mat & Technol, Guaratingueta - Brazil

^[2] Univ Estadual Paulista, UNESP, Inst Ciencia & Tecnol, Dept Engn Ambiental, Sao Jose Dos Campos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: POLYMER ENGINEERING AND SCIENCE; v. 59, n. 6, p. 1215-1222, JUN 2019.
• Citações Web of Science: 4

Resumo

The mechanical properties of composite structures depend on the preform impregnation and a successful impregnation can be achieved using the permeability relation in the case of an infusion process. The objective of this study is to develop an analytical model to predict the permeability K of carbon and glass fabrics through hybrid laminate using different stacking sequence, applying an average-permeability model. Preforms permeabilities were evaluated through tortuosity and void-volume fraction. The model allows the analysis of different stacking sequence combinations (interleaved and in block), measuring the contribution of each material type. As a result, hybrid average-permeability model was validated through experimental permeability tests, dimensionless permeability, and tortuosity results, besides enabling predictions of the flow front behavior with <10% of deviation. Carbon fiber preforms exhibited higher flow resistance, which is explained via tortuosity concept. A combination of carbon/glass preforms presented an increased permeability, which means a synergy that provides higher value of K. In addition, the use of hybrid preforms, especially Hybrid 2 stacking sequence, reduce the injection time and void formation, ensuring composite impregnation quality. POLYM. ENG. SCI., 59:1215-1222 2019. (c) 2019 Society of Plastics Engineers (AU)

• Processo FAPESP: 15/19967-4 - Fração volumétrica de vazios em compósitos híbridos processados por RTM: otimização da determinação de vazios via porosimetria de mercúrio
• Beneficiário: Francisco Maciel Monticeli
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 15/10906-2 - Caracterização de compósitos híbridos avançados: processo RTM
• Beneficiário: Dielly Cavalcanti da Silva Monte Vidal
• Modalidade de apoio: Bolsas no Brasil - Mestrado