Mode I fracture characterization of human bone using the DCB test

• Type: Article in International Scientific Journal
• Date: 2015

Authors

F. Silva (Author) Other; Marcelo Francisco Moura (Author) FEUP; N. Dourado (Author) Other; F. A. M. Pereira (Author) Other; J. J. L. Morais (Author) Other; M. I. R. Dias (Author) Other; P. J. Lourenço (Author) Other; F. M. Judas (Author) Other

Journal

Title: International Journal of Structural Integrity

Vol. 6

Pages: 355-366

ISSN: 1757-9864

Publisher: Emerald

Indexing

ISI Web of Knowledge - 0 Citations

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INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-00G-BZD

DOI: 10.1108/ijsi-03-2014-0023

Abstract (EN): Purpose Fracture characterization of human cortical bone under pure mode I loading was performed in this work, The purpose of this paper is to validate the proposed test and procedure concerning fracture characterization of human cortical bone under pure mode I loading. Design/methodology/approach A miniaturized version of the double cantilever beam (DCB) test was used for the experimental tests. A data reduction scheme based on crack equivalent concept and Tinioshenko beam theory is proposed to overcome difficulties inherent to crack length monitoring during the test. The application of the method propitiates an easy determination of the Resistance curves (R-curves) that allow to define the fracture energy under model loading from the plateau region. The average value of fracture energy was subsequently used in a numerical analysis with element method involving cohesive zone modelling. Findings The excellent agreement obtained reveals that the proposed test and associated methodology is quite effective concerning fracture characterization of human cortical bone under pure mode I loading. Originality/value A miniaturized version of traditional DCB test was proposed for cortical human bone fracture characterization under mode I loading owing to size restrictions imposed by human femur. In fact, DCB specimen propitiates a longer length for self-similar crack propagation without undertaking spurious effects. As a consequence, a R-curve was obtained allowing an adequate characterization of cortical bone fracture under mode I loading.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12