Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut
Abstract Cortical bone is semi-brittle and anisotropic, that brings a challenge to suppress vibration and avoid undesired fracture in precise cutting process in surgeries. In this paper, a novel analytical model is proposed to represent cortical bone cutting processes. The model is utilized to predi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-07-01
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| Series: | Chinese Journal of Mechanical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s10033-022-00769-2 |
| _version_ | 1818474192759160832 |
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| author | Yuanqiang Luo Yinghui Ren Yang Shu Cong Mao Zhixiong Zhou Z. M. Bi |
| author_facet | Yuanqiang Luo Yinghui Ren Yang Shu Cong Mao Zhixiong Zhou Z. M. Bi |
| author_sort | Yuanqiang Luo |
| collection | DOAJ |
| description | Abstract Cortical bone is semi-brittle and anisotropic, that brings a challenge to suppress vibration and avoid undesired fracture in precise cutting process in surgeries. In this paper, a novel analytical model is proposed to represent cortical bone cutting processes. The model is utilized to predict the chip formations, material removal behavior and cracks propagation under varying bone osteon cutting angles and depths. Series of orthogonal cutting experiments were conducted on cortical bone to investigate the impact of bone osteon cutting angle and depth of cut on cutting force, crack initialization and propagation. The observed chip morphology highly agreed with the prediction of chip formation based on the analytical model. The curly, serrated, grainy and powdery chips formed when the cutting angle was set as 0°, 60°, 90°, and 120°, respectively. Cortical bone were removed dominantly by shearing at a small depth of cut from 10 to 50 μm, and by a mixture of pealing, shearing, fracture and crushing at a large depth of cut over 100 μm at different bone osteon angles. Moreover, its fracture toughness was calculated based on measured cutting force. It is found that the fluctuation of cutting force is suppressed and the bone material becomes easy to remove, which attributes to lower fracture toughness at bone osteon cutting angle 0°. When the cutting direction develops a certain angle to bone osteon, the fracture toughness increases then the crack propagation is inhibited to some extent and the fluctuation of cutting force comparatively decreases. There is a theoretical and practical significance for tools design and operational parameters choice in surgeries. |
| first_indexed | 2024-04-14T04:34:43Z |
| format | Article |
| id | doaj.art-26ef5d21cc81490d9200f723e7388cd7 |
| institution | Directory Open Access Journal |
| issn | 1000-9345 2192-8258 |
| language | English |
| last_indexed | 2024-04-14T04:34:43Z |
| publishDate | 2022-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Chinese Journal of Mechanical Engineering |
| spelling | doaj.art-26ef5d21cc81490d9200f723e7388cd72022-12-22T02:11:55ZengSpringerOpenChinese Journal of Mechanical Engineering1000-93452192-82582022-07-0135111210.1186/s10033-022-00769-2Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of CutYuanqiang Luo0Yinghui Ren1Yang Shu2Cong Mao3Zhixiong Zhou4Z. M. Bi5College of Mechanical and Vehicle Engineering, Hunan UniversityCollege of Mechanical and Vehicle Engineering, Hunan UniversityCollege of Mechanical and Vehicle Engineering, Hunan UniversityHunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and TechnologyCollege of Mechanical and Vehicle Engineering, Hunan UniversityDepartment of Civil and Mechanical Engineering, Purdue University Fort WayneAbstract Cortical bone is semi-brittle and anisotropic, that brings a challenge to suppress vibration and avoid undesired fracture in precise cutting process in surgeries. In this paper, a novel analytical model is proposed to represent cortical bone cutting processes. The model is utilized to predict the chip formations, material removal behavior and cracks propagation under varying bone osteon cutting angles and depths. Series of orthogonal cutting experiments were conducted on cortical bone to investigate the impact of bone osteon cutting angle and depth of cut on cutting force, crack initialization and propagation. The observed chip morphology highly agreed with the prediction of chip formation based on the analytical model. The curly, serrated, grainy and powdery chips formed when the cutting angle was set as 0°, 60°, 90°, and 120°, respectively. Cortical bone were removed dominantly by shearing at a small depth of cut from 10 to 50 μm, and by a mixture of pealing, shearing, fracture and crushing at a large depth of cut over 100 μm at different bone osteon angles. Moreover, its fracture toughness was calculated based on measured cutting force. It is found that the fluctuation of cutting force is suppressed and the bone material becomes easy to remove, which attributes to lower fracture toughness at bone osteon cutting angle 0°. When the cutting direction develops a certain angle to bone osteon, the fracture toughness increases then the crack propagation is inhibited to some extent and the fluctuation of cutting force comparatively decreases. There is a theoretical and practical significance for tools design and operational parameters choice in surgeries.https://doi.org/10.1186/s10033-022-00769-2Bone cutting surgeryOrthogonal cutting modelsAnisotropic materialsChip formationCrack initialization and propagationFracture toughness |
| spellingShingle | Yuanqiang Luo Yinghui Ren Yang Shu Cong Mao Zhixiong Zhou Z. M. Bi Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut Chinese Journal of Mechanical Engineering Bone cutting surgery Orthogonal cutting models Anisotropic materials Chip formation Crack initialization and propagation Fracture toughness |
| title | Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut |
| title_full | Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut |
| title_fullStr | Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut |
| title_full_unstemmed | Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut |
| title_short | Cutting Behavior of Cortical Bone in Different Bone Osteon Cutting Angles and Depths of Cut |
| title_sort | cutting behavior of cortical bone in different bone osteon cutting angles and depths of cut |
| topic | Bone cutting surgery Orthogonal cutting models Anisotropic materials Chip formation Crack initialization and propagation Fracture toughness |
| url | https://doi.org/10.1186/s10033-022-00769-2 |
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