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

• Type: Article in International Scientific Journal
• Date: 2017

Authors

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

Journal

Title: Medical and Biological Engineering and Computing

Vol. 55

Pages: 1249-1260

ISSN: 0140-0118

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 3 Citations

ISI Web of Science

Scopus - 6 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Mechanical engineering

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12