Statistical analysis of creep behavior in thermoset and thermoplastic composites reinforced with carbon and glass fibers

Author(s)

Monticeli, Francisco Maciel ^[1] ; dos Reis, Ana Karoline ^[1] ; Neves, Roberta Motta ^[2] ; de Paula Santos, Luis Felipe ^[1] ; Botelho, Edson Cocchieri ^[1] ; Ornaghi Jr, Heitor Luiz

Affiliation

^[1] Sao Paulo State Univ Unesp, Sch Engn, Dept Mat & Technol, Av Dr Ariberto Pereira Cunha, BR-12516410 Sao Paulo - Brazil

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

• Document type: Journal article
• Source: JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN; v. 56, n. 7, p. 452-461, OCT 2021.
• Web of Science Citations: 0

Abstract

The thermoplastic and thermoset laminates reinforced with different fibers generate variations in the laminated composite mechanical behavior. This work aims to analyze thermoplastic and thermoset composites creep behavior with a reduced number of experiments, applying curve-fitting analytical models (Weibull and Findley) and statistical approach (ANOVA, F-test, and SRM) in order to describe creep behavior. Creep tests were carried out using a design of experiments to define parameter levels, aiming to reduce the number of the experiments, keeping reliability relevance. The temperature shows a stronger influence of creep deformation compared with the use of distinct materials. Thermoplastic matrices seem to be more sensitive to deformation, decreasing the reinforcement contribution. On the other hand, the creep resistance of the thermoset matrix conducts a significant contribution of strain behavior for the reinforcement used. The Findley model showed a temperature-dependent response. While, the Weibull-based model exhibits temperature and material-dependence, ensuring a greater sensitivity range of the parameters applied, an essential factor for a more realistic method description. (AU)

• FAPESP's process: 17/10606-4 - Fatigue in hybrid composites processed via RTM: hybrid interface influence in delamination modes I and II
• Grantee: Francisco Maciel Monticeli
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/16970-0 - Obtaining and Characterization of Nanostructured Thermoplastic Composites for Aeronautical Application
• Grantee: Edson Cocchieri Botelho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/07867-3 - Processing and characterization of multifunctional thermoplastic composites reinforced with carbon fibers and buckypaper of carbon nanotubes
• Grantee: Luis Felipe de Paula Santos
• Support Opportunities: Scholarships in Brazil - Doctorate