International Journal of Composite Materials and Matrices

ISSN: 2582-435X

Editors Overview

ijcmm maintains an Editorial Board of practicing researchers from around the world, to ensure manuscripts are handled by editors who are experts in the field of study.

Open Access
Special Issue
Topic

Bone fracture mechanics considering an elastic-plastic hypothesis

Abstract Submission Deadline : November 30, 2023

Manuscript Submission Deadline : December 25, 2023

Special Issue Description

Bone has been found to have several toughening mechanisms that boost its toughness, including a hierarchical structure that extends from the nano- to the macro-scale and a composite architecture made up of nano-sized mineral crystals encased in an organic matrix. The progression of cracks can be stopped, slowed down, or deflected by these mechanisms, which can also induce slight apparent plastic deformation of the bone before fracture. Bone also exhibits nonlinear behavior before fracture due to its high volumetric percentage of organics and water. Strength or the critical stress intensity factor (fracture toughness) was utilized generally by researchers to describe the mechanical properties of bone. The energy used in plastic deformation before bone fracture is not taken into consideration by these parameters, though. We used elastic-plastic fracture mechanics to analyze bone’s fracture toughness to precisely explain its mechanical properties. The total energy expended before bone fracture was calculated using the J integral, a parameter that calculates the energies needed in both elastic and plastic deformations. From the mid-diaphysis of the bovine femurs, twenty cortical bone samples were taken. Ten of them were ready for transverse fracture, and the other ten were ready for longitudinal fracture. The samples were evaluated in distilled water at 37°C after being prepared using the equipment recommended in ASTM E1820. The average J integral of the transversely cracked specimens was found to be 6.6 kPa m, 187% higher than that of the longitudinally fractured specimens (2.3 kPa m). The longitudinal- and transverse-fractured bovine specimens’ plastic deformation required 3.6–4.1 times as much energy as their elastic deformation, it was discovered. According to this study, bone’s toughness may be evaluated using the J integral and is significantly higher than bone toughness as determined by the critical stress intensity factor. We contend that a more accurate method for determining bone toughness is the J integral method.

Keywords

Hierarchical, Mineral crystals, Plastic , Cortical bone , Fracture toughness, Linear–elastic fracture mechanics, Elastic deformation, Prosthetic, Parameters

Manuscript Submission information

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