Effect of stacking sequence and porosity on creep behavior of glass/epoxy and carbon/epoxy hybrid laminate composites

Author(s)

Ornaghi, Heitor Luiz ^[1] ; Monticeli, Francisco Maciel ^[1] ; Neves, Roberta Motta ^{[2, 3]} ; Zattera, Ademir Jose ^[3] ; Hilario Cioffi, Maria Odila ^[1] ; Cornelis Voorwald, Herman Jacobus ^[1]

Affiliation

^[1] Sao Paulo State Univ Unesp, Sch Engn, Dept Mat & Technol, Fatigue & Aeronaut Mat Res Grp, BR-12516410 Guaratingueta, SP - Brazil

^[2] Univ Fed Rio Grande do Sul, Postgrad Program Min Met & Mat Engn PPGE3M, Av Bento Goncalves 9500, Porto Alegre, RS - Brazil

^[3] Univ Caxias do Sul UCS, Postgrad Program Engn Proc & Technol PGEPROTEC, Caxias Do Sul, RS - Brazil

• Document type: Journal article
• Source: COMPOSITES COMMUNICATIONS; v. 19, p. 210-219, JUN 2020.
• Web of Science Citations: 0

Abstract

The creep behavior of hybrid carbon/glass laminate composites was investigated using a dynamic mechanical analyzer and different temperature profiles. Dynamic analysis and porosity were carried out prior to the creep test applying Findley's power law. The dynamic curves were not influenced by porosity but were affected by the architecture of the composites. The creep tests showed porosity dependence at temperatures below T-g while at higher temperatures, the architecture of the reinforcement plays a major role. Time-temperature superposition was conducted for long-term creep prediction and the results showed lower creep strain for the carbon and interleaved hybrid composites. (AU)

• FAPESP's process: 06/02121-6 - Composite processing by RTM
• Grantee: Maria Odila Hilário Cioffi
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 15/19967-4 - Void volume fraction of hybrid composites processed by RTM: optimization of voids determination via mercury porosimetry
• Grantee: Francisco Maciel Monticeli
• Support Opportunities: Scholarships in Brazil - Master