Fracture characterization of human cortical bone under mode II loading using the end-notched flexure test

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

Autores

de Moura, MFSF (Autor) FEUP; Filipe Silva (Autor) Outra; Nuno Dourado (Autor) Outra; José Xavier (Autor) Outra; Fábio Pereira (Autor) Outra; José Morais (Autor) Outra; Maria Dias (Autor) Outra; Paulo Lourenço (Autor) Outra; Fernando Judas (Autor) Outra

Revista

Título: Medical and Biological Engineering and Computing

Vol. 55

Páginas: 1249-1260

ISSN: 0140-0118

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 3 Citações

ISI Web of Science

Scopus - 6 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-00M-4ZB

DOI: 10.1007/s11517-016-1586-6

Abstract (EN): Fracture characterization of human cortical bone under mode II loading was analyzed using a miniaturized version of the end-notched flexure test. A data reduction scheme based on crack equivalent concept was employed to overcome uncertainties on crack length monitoring during the test. The crack tip shear displacement was experimentally measured using digital image correlation technique to determine the cohesive law that mimics bone fracture behavior under mode II loading. The developed procedure was validated by finite element analysis using cohesive zone modeling considering a trapezoidal with bilinear softening relationship. Experimental load-displacement curves, resistance curves and crack tip shear displacement versus applied displacement were used to validate the numerical procedure. The excellent agreement observed between the numerical and experimental results reveals the appropriateness of the proposed test and procedure to characterize human cortical bone fracture under mode II loading. The proposed methodology can be viewed as a novel valuable tool to be used in parametric and methodical clinical studies regarding features (e.g., age, diseases, drugs) influencing bone shear fracture under mode II loading.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12