Open AccessExperimental Study of Cortical Bone Microstructure and Its Toughening Mechanism
Author(s) -
Xiaohan Wang,
Dongxu Li,
Rui Hao
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/563/3/032052
Subject(s) - microstructure , toughening , materials science , toughness , cortical bone , fracture toughness , tibia , composite material , load bearing , bearing (navigation) , mechanism (biology) , anatomy , medicine , computer science , philosophy , epistemology , artificial intelligence
With the increasingly severe mechanical environment of the planetary detectors, fracture and failure are more likely to occur at their load-bearing structures. Therefore, it is urgent to improve the toughness of load-bearing structures. Because of the unique microstructures, goat tibia has remarkable toughness. In this investigation, firstly, the cortical bone of goat tibia was observed by SEM, and the characteristic microstructures were identified. Secondly, the cross section of cortical bone was loaded by long-term inplane stress, then the toughness of cortical bone in different regions were obtained based on the orientation and distribution of cracks after the load. Finally, the toughening mechanisms of cortical bone were discussed. This study of the cortical bone toughening mechanism can be helpful for the biomimetic design of high-toughness materials.