Influence of different self-healing fractions on the mechanical behavior of 5HS/Epoxy polymer composite

• Grant number: 20/09422-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2020
• End date: October 14, 2021
• Field of knowledge: Engineering - Aerospace Engineering
• Principal Investigator: Herman Jacobus Cornelis Voorwald
• Grantee: Yuri Pereira Chuves
• Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil

Abstract

The requirement for damage control of materials applied in the aeronautical industry is stringent, considering that it is essential for preventing accidents. In addition, a newly created method to generate self-repair in composites has become promising in terms of the possibility of restoring failures and increasing the useful life of the material. The application of self-healing combined the need for high demands on the damage control required by industries with the growing application of structural composites. The addition of different fractions of the self-healing agent can provide a variation in the efficiency of the damage repair, in which it can present an optimal concentration of repair, insufficiency (in the case of a low fraction) or accumulation of tension (in the case of an excessive amount of agent). To quantify the influence of the self-healing fraction and the appropriated amount for self-healing, the main objective of this work will be to evaluate the mechanical behavior of interlaminar shear with and without different agent fractions. For that purpose, the polymeric laminates (5HS/epoxy) will be processed via RTM, with and without self-healing, to perform mechanical tests. The fraction and distribution along the laminate will be analyzed using optical microscopy to evaluate the dispersion of the curing agent and the self-repairing behavior through fractographic analyzes. Finally, the pre and post-test samples will be compared and qualified for their possible reuse and repair efficiency.

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)

CHUVES, YURI PEREIRA; MONTICELI, FRANCISCO MACIEL; DO NASCIMENTO, ALLANA AZEVEDO; BARBOSA, ANA PAULA CYSNE; VOORWALD, HERMAN JACOBUS CORNELIS; CIOFFI, MARIA ODILA HILARIO. The Effect of Self-Healing Agent Fraction on CFRP Mechanical Behavior: Statistical Analysis Approach. FIBERS AND POLYMERS, v. 24, n. 2, p. 12-pg., 2023-02-20. (17/10606-4, 20/09422-9, 21/05706-5, 19/04412-8)

CHUVES, YURI PEREIRA; PITANGA, MIDORI; GRETHER, INGA; CIOFFI, MARIA ODILA; MONTICELI, FRANCISCO. The Influence of Several Carbon Fiber Architecture on the Drapability Effect. TEXTILES, v. 2, n. 3, p. 13-pg., 2022-09-01. (21/05706-5, 17/10606-4, 20/09422-9)