Determining mode II cohesive law of Pinus pinaster by combining the end-notched flexure test with digital image correlation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

J. Xavier (Autor) Outra; M. Oliveira (Autor) Outra; J. J. L. Morais (Autor) Outra; Marcelo Francisco Moura (Autor) FEUP

Revista

Título: Construction and Building Materials

Vol. 71

Páginas: 109-115

ISSN: 0950-0618

Editora: Elsevier

Indexação

ISI Web of Knowledge - 6 Citações

ISI Web of Science

Scopus - 13 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-009-T95

DOI: 10.1016/j.conbuildmat.2014.08.021

Abstract (EN): This work addresses the direct identification of cohesive law of Pinus pinaster in mode II. The end-notched flexure (ENF) test is selected for mode II loading. The strain energy release rate in mode II (G(II)) is determined according to the compliance-based beam method (CBBM) by processing the global load-displacement curve, without requirements to monitor the crack length during test. The fracture test is coupled with digital image correlation (DIC) for the local measurement of the crack tip opening displacement in mode II (w(II)). Using a direct method, the cohesive law in mode II (sigma(II)-w(II)) is determined by differentiating the G(II)-w(II) relationship. The procedure is validated from both numerical, using finite element analyses including cohesive zone modelling, and experimental approaches. The methodology and accuracy on this reconstruction is discussed. It is concluded that the proposed data reduction scheme is suitable for assessing the cohesive law of P. pinaster in mode II.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7