Advanced search
Start date
Betweenand

Fatigue in hybrid composites processed via RTM: hybrid interface influence in delamination modes I and II

Grant number: 17/10606-4
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2020
Effective date (End): September 30, 2021
Field of knowledge:Engineering - Aerospace Engineering
Principal researcher:Maria Odila Hilário Cioffi
Grantee:Francisco Maciel Monticeli
Home Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil

Abstract

Hybrid composites application for aeronautics industry could be a feasible solution to carbon fiber high cost. However, mechanical properties of this new composite remain being fundamental for structural application. One of the main factors that restricts laminated composites use in the aeronautical industry is the low value of interlaminar fracture toughness, which is represented mainly by matrix/reinforcement adhesion.As result of a rapid crack propagation occurred in the interlaminar section. Considering carbon fibers surface treatments, which introduces an excessively strong adhesion and, as a consequence, a possible weakening of the composite, the toughness could be increased with the introduction of fiber glass. Thereby, it became necessary the knowledge of hybrid interface influence in crack propagation rate per numbers of cycles. The main objective of this work is to determine the influence that the interface of hybrid composite offers in crack propagation on individual opening modes I and II, through specimen delamination, which will be subjected to cyclic loading with constant amplitude. For this, mathematical contributions of both fibers in crack propagation will be analyzed and validated experimentally, through the model developed by Khan. Thus, establishing the parameters for fatigue characterization of each mode individually. Crack propagation prediction, considering the physical mechanisms of fracture, will be performed with theoretical analytical model application and made possible through experimental results. The fractographic investigation makes possible the analysis of failure mechanisms and the microstructural influence of hybrid interface in interlaminar fracture toughness, qualitatively and quantitatively. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MONTICELI, FRANCISCO MACIEL; DOS REIS, ANA KAROLINE; NEVES, ROBERTA MOTTA; DE PAULA SANTOS, LUIS FELIPE; BOTELHO, EDSON COCCHIERI; ORNAGHI JR, HEITOR LUIZ. Statistical analysis of creep behavior in thermoset and thermoplastic composites reinforced with carbon and glass fibers. JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, v. 56, n. 7, p. 452-461, OCT 2021. Web of Science Citations: 0.
MONTICELI, FRANCISCO MACIEL; PITANGA, MIDORI YOSHIKAWA; CIOFFI, MARIA ODILA HILARIO; VOORWALD, HERMAN JACOBUS CORNELIS. Mode I and mode II delamination of carbon/glass/epoxy hybrid composite: A statistics-based analysis. Polymer Composites, v. 42, n. 8, p. 3857-3869, AUG 2021. Web of Science Citations: 0.
MONTICELI, FRANCISCO MACIEL; DOS REIS, ANA KAROLINE; NEVES, ROBERTA MOTTA; DE PAULA SANTOS, LUIS FELIPE; BOTELHO, EDSON COCCHIERI; ORNAGHI JR, HEITOR LUIZ. Statistical analysis of creep behavior in thermoset and thermoplastic composites reinforced with carbon and glass fibers. JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, DEC 2020. Web of Science Citations: 0.
MONTICELI, FRANCISCO MACIEL; SHIINO, MARCOS YUTAKA; CORNELIS VOORWALD, HERMAN JACOBUS; HILARIO CIOFFI, MARIA ODILA. The synergy effect of carbon/glass/epoxy hybrid laminate in Mode I delamination: A physical microfracture analysis. ENGINEERING FRACTURE MECHANICS, v. 239, NOV 2020. Web of Science Citations: 0.
MONTICELI, FRANCISCO M.; ALMEIDA, JR., JOSE HUMBERTO S.; NEVES, ROBERTA M.; ORNAGHI, FELIPE G.; ORNAGHI, HEITOR L. On the 3D void formation of hybrid carbon/glass fiber composite laminates: A statistical approach. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, v. 137, OCT 2020. Web of Science Citations: 1.
ORNAGHI JR, HEITOR L.; NEVES, ROBERTA M.; MONTICELI, FRANCISCO M.; ALMEIDA, JR., JOSE HUMBERTO S. Viscoelastic characteristics of carbon fiber-reinforced epoxy filament wound laminates. COMPOSITES COMMUNICATIONS, v. 21, OCT 2020. Web of Science Citations: 3.
MONTICELI, FRANCISCO MACIEL. A fatigue life estimative method based on dynamic mechanical and fatigue analyses. INTERNATIONAL JOURNAL OF FATIGUE, v. 138, SEP 2020. Web of Science Citations: 0.
REIS, ANA KAROLINE DOS; MONTICELLI, FRANCISCO MACIEL; NEVES, ROBERTA MOTTA; DE PAULA SANTOS, LUIS FELIPE; BOTELHO, EDSON COCCHIERI; LUIZ ORNAGHI JR, HEITOR. Creep behavior of polyetherimide semipreg and epoxy prepreg composites: Structure vs. property relationship. JOURNAL OF COMPOSITE MATERIALS, MAY 2020. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.