Effect of ageing on microstructure and fracture behavior of cortical bone as determined by experiment and Extended Finite Element Method (XFEM)
| Autor: | Piyush Uniyal, Sachin Kumar, Sanjay Kumar Bhadada, Praveer Sihota, Vandana Dhiman, Ram Naresh Yadav, Daisy Sahni, Navin Kumar, Vijay Goni |
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| Rok vydání: | 2021 |
| Předmět: |
Aging
Toughness Materials science Finite Element Analysis 0206 medical engineering Biomedical Engineering Biophysics 02 engineering and technology Models Biological Fractures Bone 03 medical and health sciences 0302 clinical medicine Cortical Bone medicine Humans Composite material Aged Extended finite element method Haversian canal Bone fracture medicine.disease Microstructure 020601 biomedical engineering medicine.anatomical_structure Osteon Fracture (geology) Cortical bone 030217 neurology & neurosurgery |
| Zdroj: | Medical Engineering & Physics. 93:100-112 |
| ISSN: | 1350-4533 |
| DOI: | 10.1016/j.medengphy.2021.05.021 |
| Popis: | Bone fracture is a severe health concern; therefore, understanding the causes of bone fracture are crucial. This paper investigates the microstructure and fracture behaviour of cadaveric cortical bone of two different groups (Young, n= 6; Aged, n=7). The microstructure is obtained from µ-CT images, and the material parameters are measured with nanoindentation. Fracture behaviour in transverse and longitudinal orientations is investigated experimentally and numerically. The results show that the Haversian canal (HC) size increases and the osteon wall thickness (OWT) decreases significantly in the aged group, whereas a nonsignificant difference is found in tissue properties. The crack initiation (Jic) and crack growth (Jgrow) toughness of the aged group are found to be significantly lower (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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