Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation
The abrasive machining of cortical tissue is used in many arthroplasties and craniofacial surgery procedures. However, this method requires further research due to the processes’ complexity and the tissue’s composite structure. Therefore, studies were carried out to assess the impact of grid geometr...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Journal of Functional Biomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4983/13/3/154 |
| _version_ | 1797486495726043136 |
|---|---|
| author | Paweł Zawadzki Rafał Talar |
| author_facet | Paweł Zawadzki Rafał Talar |
| author_sort | Paweł Zawadzki |
| collection | DOAJ |
| description | The abrasive machining of cortical tissue is used in many arthroplasties and craniofacial surgery procedures. However, this method requires further research due to the processes’ complexity and the tissue’s composite structure. Therefore, studies were carried out to assess the impact of grid geometry and the anisotropic structure of bone tissue on the cutting process and crack propagation. The analysis was performed based on an orthogonal cutting in three directions. The grain shape has been simplified, and the cutting forces, crack path and surface quality were monitored. The results indicate that a depth of cut at 100–25 µm allows the most accurate cutting control. A transverse cutting direction results in the greatest surface irregularity: <i>Iz</i> = 17.7%, <i>Vvc</i> = 3.29 mL/m<sup>2</sup> and <i>d<sub>f</sub></i> = 5.22 µm and generates the most uncontrolled cracks. Maximum fracture force values of <i>FF</i> > 80 N were generated for <i>d</i> = 175 µm. For <i>d</i> < 5 µm, no cracks or only slight penetration occurs. A positive <i>γ</i> provides greater repeatability and crack control. Negative <i>γ</i> generates penetrating cracks and uncontrolled material damage. The individual types of cracks have a characteristic course of changes in <i>F<sub>x</sub></i>. The clearance angle did not affect the crack propagation. |
| first_indexed | 2024-03-09T23:34:00Z |
| format | Article |
| id | doaj.art-3fb10cb4d4034a1d9ab4688988bbdfde |
| institution | Directory Open Access Journal |
| issn | 2079-4983 |
| language | English |
| last_indexed | 2024-03-09T23:34:00Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Biomaterials |
| spelling | doaj.art-3fb10cb4d4034a1d9ab4688988bbdfde2023-11-23T17:03:57ZengMDPI AGJournal of Functional Biomaterials2079-49832022-09-0113315410.3390/jfb13030154Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack PropagationPaweł Zawadzki0Rafał Talar1Faculty of Mechanical Engineering, Poznan University of Technology, Maria Sklodowska-Curie Square 5, 60-965 Poznan, PolandFaculty of Mechanical Engineering, Poznan University of Technology, Maria Sklodowska-Curie Square 5, 60-965 Poznan, PolandThe abrasive machining of cortical tissue is used in many arthroplasties and craniofacial surgery procedures. However, this method requires further research due to the processes’ complexity and the tissue’s composite structure. Therefore, studies were carried out to assess the impact of grid geometry and the anisotropic structure of bone tissue on the cutting process and crack propagation. The analysis was performed based on an orthogonal cutting in three directions. The grain shape has been simplified, and the cutting forces, crack path and surface quality were monitored. The results indicate that a depth of cut at 100–25 µm allows the most accurate cutting control. A transverse cutting direction results in the greatest surface irregularity: <i>Iz</i> = 17.7%, <i>Vvc</i> = 3.29 mL/m<sup>2</sup> and <i>d<sub>f</sub></i> = 5.22 µm and generates the most uncontrolled cracks. Maximum fracture force values of <i>FF</i> > 80 N were generated for <i>d</i> = 175 µm. For <i>d</i> < 5 µm, no cracks or only slight penetration occurs. A positive <i>γ</i> provides greater repeatability and crack control. Negative <i>γ</i> generates penetrating cracks and uncontrolled material damage. The individual types of cracks have a characteristic course of changes in <i>F<sub>x</sub></i>. The clearance angle did not affect the crack propagation.https://www.mdpi.com/2079-4983/13/3/154cortical boneorthogonal cuttingbone fracture mechanismanisotropic bone propertiescrack propagationabrasive machining |
| spellingShingle | Paweł Zawadzki Rafał Talar Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation Journal of Functional Biomaterials cortical bone orthogonal cutting bone fracture mechanism anisotropic bone properties crack propagation abrasive machining |
| title | Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation |
| title_full | Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation |
| title_fullStr | Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation |
| title_full_unstemmed | Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation |
| title_short | Bone Abrasive Machining: Influence of Tool Geometry and Cortical Bone Anisotropic Structure on Crack Propagation |
| title_sort | bone abrasive machining influence of tool geometry and cortical bone anisotropic structure on crack propagation |
| topic | cortical bone orthogonal cutting bone fracture mechanism anisotropic bone properties crack propagation abrasive machining |
| url | https://www.mdpi.com/2079-4983/13/3/154 |
| work_keys_str_mv | AT pawełzawadzki boneabrasivemachininginfluenceoftoolgeometryandcorticalboneanisotropicstructureoncrackpropagation AT rafałtalar boneabrasivemachininginfluenceoftoolgeometryandcorticalboneanisotropicstructureoncrackpropagation |