The effect of the impactor diameter and boundary conditions on low velocity impact composites behaviour

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2007

Autores

Amaro, AM (Autor) Outra; Reis, PNB (Autor) Outra; Magalhaes, AG (Autor) Outra; Moura, MFSF (Autor) FEUP

Ata de Conferência Internacional

Título: APPLIED MECHANICS AND MATERIALS

Páginas: 217-222

5th International Conference on Advances in Experimental Mechanics

Manchester, ENGLAND, SEP 04-06, 2007

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 5 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-004-CBJ

Abstract (EN): The aim of present work is to study the influence of the impactor diameter and boundary conditions on low velocity impact on carbon-fibre-reinforced epoxy laminates. Experimental tests were performed on [0(4).90(4)](s) laminates, using a drop weight-testing machine. Circular plates were tested under low velocity impacts for two diameters of the hemispherical impactor, 12.7 mm and 20 mm, and considering similar impact energies, 2.6 J for the first impactor and 3 J for the second one. Rectangular and square plates were analysed under low velocity impacts with different boundary conditions. The impacted plates were inspected by X-radiography. Numerical simulations were also performed considering interface finite elements compatible with three-dimensional solid elements including a cohesive mixed-mode damage model, which allows to model delamination between layers. The impact tests showed that both the impactor's diameter and boundary conditions have influence on the delaminated area. Good agreement between experimental and numerical analysis for shape, orientation and size of damage was obtained.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6