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Manufacturing of composite laminates by vacuum infusion of liquid resin with optical fibers insertion for strain and damage sensing

Grant number: 14/00099-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): May 01, 2014
Effective date (End): November 30, 2016
Field of knowledge:Engineering - Aerospace Engineering
Principal Investigator:José Ricardo Tarpani
Grantee:Gustavo de Souza
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated scholarship(s):15/25554-4 - Manufacture of continuous fiber-reinforced polymer composite structures with embedded optical fibers for on-line health monitoring via optical backscatter reflectometry, BE.EP.IC


Composite laminates have been successfully applied in projects where the optimization of the mechanical properties and low specific weight are critical, generating exceptional structural efficiencies. Such laminates can be manufactured from manual impregnation processes (hand - layup ), and more recently, manufacturing methods based on the resin infusion system as RTM ( Resin Transfer Moulding) and its derivatives , which has replaced manual methods in due to their increased repeatability , reproducibility , standardization and higher quality in the industrial environment . There are many variables which include the resin infusion processes such as (s) best (s) point (s) for infusion of the resin into the mold , the behavior of the resin flow front during the filling, the differences in pressures between the inlet and outlet of the mold, and especially the time of completing it . To obtain the optimal properties of the final laminate is necessary to know and control all of these variables . An effective way of achieving or approaching this ideal condition is to perform simulations on dedicated computer programs that , with the aid of appropriate databases , allow virtual reproduction of the physical process , allowing changes in the relevant parameters of the infusion , resulting in improvement and performance of the technique and hence a substantial improvement in the final properties of the composite laminate obtained. This research project proposes a computational approach to infusion technique RIFT. Rolled plans will be made and a full monitoring, in terms of time and space, the advance of the advancing resin in the mold will be held during the infusion process. The goal is to collect all the experimental data that can be used as boundary conditions in the mathematical modeling of the process. The simulation process will be performed through the STAR + CMM program.

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Scientific publications
(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)
SOUZA, G.; TARPANI, J. R.. Using OBR for pressure monitoring and BVID detection in type IV composite overwrapped pressure vessels. JOURNAL OF COMPOSITE MATERIALS, v. 55, n. 3, . (14/00099-0, 15/25554-4)

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