Bone fracture characterization under mixed-mode I+II loading using the single leg bending test

• Type: Article in International Scientific Journal
• Date: 2014

Authors

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

Journal

Title: Biomechanics and Modeling in Mechanobiology

Vol. 13

Pages: 1331-1339

ISSN: 1617-7959

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 5 Citations

ISI Web of Science

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-00G-H16

DOI: 10.1007/s10237-014-0575-7

Abstract (EN): Fracture under mixed-mode I+II was induced in bovine cortical bone tissue using a developed miniaturized version of the single leg bending test (SLB). Due to the difficulty in crack length monitoring in the course of the test, an equivalent crack method based on specimen compliance and beam theory was adopted as a data reduction scheme. The method was applied to the experimental results in order to obtain the Resistance curves in each loading mode. The determined fracture energy is well described by an energetic power law whose exponent is below one, which means that the linear energetic criterion is not applicable to this material. The proposed procedure was numerically validated by means of a cohesive mixed-mode I+II damage model with bilinear softening. It was concluded that the miniaturized version of the SLB test is adequate for mixed-mode I+II fracture characterization of bone for a constant mode ratio. © 2014 Springer-Verlag Berlin Heidelberg.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9