Mode II Fracture Characterization of Pinus pinaster Wood

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2008

Autores

de Moura, MFSF (Autor) FEUP; Silva, MAL (Autor) Outra; Morais, JJL (Autor) Outra; de Morais, AB (Autor) Outra; Oliveira, JMQ (Autor) Outra

Ata de Conferência Internacional

Título: Advanced Materials Forum IV

Páginas: 594-598

IV International Materials Symposium Materiais 2007 and XIII Encontro da Sociedade Portuguesa de Materiais

Porto, Portugal, April 1-4, 2007

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-004-28Z

Abstract (EN): This paper describes experimental and numerical studies on the application of the End Notched Flexure (ENF) and End Loaded Split (ELS) tests to mode II wood fracture characterization. In this context. ENF and ELS specimens were used to determine G(IIc) of a clear Pinus pinaster wood in the R,L system, which is the most relevant for structural design. In mode II fracture tests the crack faces are in contact, thus hindering a rigorous visualization of the crack tip. This makes classic methodologies based on crack length measurement during experimental tests inadequate, since they induce significant errors on the mode II fracture properties. To overcome this experimental problem a Compliance Based Beam Method (CBBM) is used. This new data reduction scheme does not require crack length monitoring, and includes the effect of the Fracture Process Zone (FPZ) ahead of crack tip. Furthermore, the clamped cross-section rotation of the ELS specimen is also taken into account. In the present work a numerical analysis considering, a cohesive damage model was performed with a cohesive damage model in order to validate the application of they CBBM to the experimental results. The results Confirmed the adequacy of the CBBM and the applicability of the ENF and ELS tests for mode II snood fracture characterization.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5