The Effect of Self-Healing Agent Fraction on CFRP Mechanical Behavior: Statistical Analysis Approach

Autor(es)

Chuves, Yuri Pereira ; Monticeli, Francisco Maciel ; do Nascimento, Allana Azevedo ; Barbosa, Ana Paula Cysne ; Voorwald, Herman Jacobus Cornelis ; Cioffi, Maria Odila Hilario

• Tipo de documento: Artigo Científico
• Fonte: FIBERS AND POLYMERS; v. 24, n. 2, p. 12-pg., 2023-02-20.

Resumo

The self-healing application in structural composites aims to recover component properties, control damage propagation, and increase component life. In this way, this study proposes to characterize and predict the inter-laminar shear behavior of polymer composites (5HS carbon/epoxy) with different fractions of self-healing agent. In addition, this work aims to measure the influence of self-healing content on the mechanical response. The ANOVA evidenced that the healing agent fraction influences on mechanical properties more than the internal dispersion for the same laminate before the healing cycle. Weibull distribution evidenced a linear decrease in shear stresses for higher EMAA (poly(ethylene-co-methacrylic acid)) content, regarding stiffness decrease as a response to ductile thermoplastic behavior. Ineffective healing effects were observed for the translaminar and intra-laminar damage, once most particles were concentrated in inter-laminar sections. However, the healing efficiency reached an average of 62% for shear stress and 106% for toughness behavior, provided by the closing shear cracks, i.e., up to 57% of reduced area related to the initial crack size. The predictive approach before and after healing action in the mechanical behavior provides the appropriate self-healing level to meet the specific project requirements, thus saving time and cost. (AU)

• Processo FAPESP: 17/10606-4 - Fadiga em compósitos híbridos processados via RTM: influência da interface híbrida na delaminação nos modos I e II
• Beneficiário: Francisco Maciel Monticeli
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 20/09422-9 - Influência de diferentes frações de self-healing no comportamento mecânico do compósito polimérico 5HS/Epóxi
• Beneficiário: Yuri Pereira Chuves
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 21/05706-5 - Fadiga em compósitos polimérico reforçado com fibra de carbono: caracterização de propagação de dano intra e interlaminar
• Beneficiário: Francisco Maciel Monticeli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 19/04412-8 - Compósito processado por RTM usando agente de auto-reparo dispersado na matriz: comportamento viscoelástico e fratura interlaminar em modo II
• Beneficiário: Maria Odila Hilário Cioffi
• Modalidade de apoio: Bolsas no Exterior - Pesquisa