Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The synergy effect of carbon/glass/epoxy hybrid laminate in Mode I delamination: A physical microfracture analysis

Full text
Author(s):
Monticeli, Francisco Maciel [1] ; Shiino, Marcos Yutaka [2] ; Cornelis Voorwald, Herman Jacobus [1] ; Hilario Cioffi, Maria Odila [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ Unesp, Sch Engn, Dept Mat & Technol, BR-12516410 Guaratingueta, SP - Brazil
[2] Univ Estadual Paulista Unesp, Inst Ciencia & Tecnol, Dept Engn Ambiental, Sao Jose Dos Campos - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ENGINEERING FRACTURE MECHANICS; v. 239, NOV 2020.
Web of Science Citations: 0
Abstract

The adoption of carbon/glass fiber hybrid composites is an economical alternative to high-cost carbon/epoxy composites and helps to address environmental issues. However, the addition of another type of fiber modifies the mechanical behavior of the composite regarding interfacial interactions, consequently affecting other properties. Research related to three interfaces, with regard to hybrid composites, has not yet provided a good understanding of the physical interactions between components at a hybrid interface and how they affect the interfacial adhesion. In order to partially understand the interactions occurring in the proposed material, the fracture toughness in Mode I delamination was analyzed based on microstructural fracture mechanisms (FBZ) and energy balance principle models. The addition of flexible glass fiber in a stiffer carbon fiber lay-up enabled a considerable increase in the delamination strength. This property is also attributed to the organosilane adhesion promoter, a natural silane present in glass fiber. Additionally, the increased strain energy release is physically influenced by the rougher fracture surface and the hybrid fiber bridging failure mechanisms, inducing a more stable crack propagation and higher fracture toughness, compared to a carbon fiber composite. (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