Mixed-mode I plus II fracture characterization of a hybrid carbon-epoxy/ cork laminate using the Single-Leg Bending test

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

de Moura, MFSF (Autor) FEUP; P. M. L. C. Cavaleiro (Autor) FEUP; Filipe Silva (Autor) FEUP; N. Dourado (Autor) Outra

Revista

Título: Composites Science and Technology

Vol. 141

Páginas: 24-31

ISSN: 0266-3538

Editora: Elsevier

Indexação

ISI Web of Knowledge - 4 Citações

ISI Web of Science

Scopus - 12 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-00M-K0E

DOI: 10.1016/j.compscitech.2017.01.001

Abstract (EN): This paper describes experimental and numerical studies addressing mixed-mode I+II fracture characterization of a carbon-epoxy/cork hybrid laminate using the Single-Leg Bending test. An equivalent crack length based data reduction scheme applied to the hybrid specimen was developed to evaluate the fracture energy. The proposed method does not require crack length monitoring during the test which is difficult to perform accurately in a tough material, as is the case of cork. It was observed that hybridization is quite effective since stable crack growth occurred even for unstable specimen configurations. Moreover, the more efficient quadratic energetic criterion was found to be representative of the hybrid material fracture, instead of the linear one characterizing the monolithic carbon-epoxy material. The proposed procedure was validated by means of finite element analysis including a new trapezoidal cohesive zone model based on incremental calculation of energy dissipation during fracture.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8