The relationship between pure delamination modes I and II on the crack growth rate process in cracked lap shear specimen (CLS) of 5 harness satin composites

Autor(es)

Shiino, M. Y. ^[1] ; Alderliesten, R. C. ^[2] ; Donadon, M. V. ^[3] ; Cioffi, M. O. H. ^[4]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Inst Ciencia & Tecnol, Dept Engn Ambiental, BR-12247004 Sao Jose Dos Campos, SP - Brazil

^[2] Delft Univ Technol TUDelft, Fac Aerosp Engn, Aerosp Struct & Mat, NL-2629 HS Delft - Netherlands

^[3] ITA, BR-12228900 Sao Jose Dos Campos, SP - Brazil

^[4] UNESP Univ Estadual Paulista, Fac Engn Guaratingueta, Dept Mat & Tecnol, Fatigue & Aeronaut Mat Res Grp, BR-12516410 Guaratingueta, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING; v. 78, p. 350-357, NOV 2015.
• Citações Web of Science: 2

Resumo

Carbon fiber reinforced polymers (CFRP) structure can include dropping-off plies in order to comply with design requirements aiming at significant weight savings. However this type of discontinuity represents a potential source of delamination initiation and propagation which requires assessment of the mechanisms acting at the crack tip. This research investigates the influence of delamination modes I and II on the overall damage process observed in CLS specimen subjected to cyclic loads. The main contribution of this work focuses on the identification and physical interpretation of complex failure mechanisms in harness satin fabric. For this purpose a detailed fractographic analysis was carried out to qualitatively assess the surface fractures in these type of laminates. Results obtained for cyclic loaded CLS specimens were compared to analytical closed form solutions available in the literature. Results indicated that delamination front exhibited distinguishable delamination modes land II propagating at constant mixed mode ratio (G(I)/G(T)). (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 11/01937-0 - Taxa de delaminação em compósitos 5HS carbono/epóxi processado via RTM: relação do carregamento axial tração-tração como modos I e II puros
• Beneficiário: Marcos Yutaka Shiino
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/07646-0 - Avaliação do efeito do gradiente de pressão no processamento RTM em laminado 5HS por DCB no modo i em fadiga
• Beneficiário: Marcos Yutaka Shiino
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado