Design study of dynamic mechanical test bench specimen grips
The characterization of mechanical properties of materials used in biomedical applications is essential for performance evaluation. In addition to quasi-static tests, dynamic tests extend the range of methods and allow predictions of failure, as well as information on durability. Appropriate specime...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-09-01
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| Series: | Current Directions in Biomedical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/cdbme-2022-1094 |
| _version_ | 1811159445551448064 |
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| author | Fiedler Nicklas Arbeiter Daniela Kleine Thomas Grabow Niels |
| author_facet | Fiedler Nicklas Arbeiter Daniela Kleine Thomas Grabow Niels |
| author_sort | Fiedler Nicklas |
| collection | DOAJ |
| description | The characterization of mechanical properties of materials used in biomedical applications is essential for performance evaluation. In addition to quasi-static tests, dynamic tests extend the range of methods and allow predictions of failure, as well as information on durability. Appropriate specimen grips according to the test sample geometry are crucial for a reliable examination of mechanical testing and therefore valid experimental data. In particular, the investigation of polymers is challenging, as properties show major differences depending on temperature and applied loading rate. This could result in slipping or tearing of samples in the specimen grip area. Numerical simulations of reference grips, as well as alternative custom designs, were performed evaluating damage due to the clamping process and to provide appropriate specimen grips for future dynamic-mechanical investigations of materials with variable properties. Both the results of the numerical simulation and preliminary tests with 3D-printed prototypes show a distinct improvement in specimen clamping. Plastic deformation and local stress peaks were reduced while maintaining the same tightening torque. |
| first_indexed | 2024-04-10T05:41:14Z |
| format | Article |
| id | doaj.art-a23b060193f54ef09b40baa66d1fc517 |
| institution | Directory Open Access Journal |
| issn | 2364-5504 |
| language | English |
| last_indexed | 2024-04-10T05:41:14Z |
| publishDate | 2022-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Current Directions in Biomedical Engineering |
| spelling | doaj.art-a23b060193f54ef09b40baa66d1fc5172023-03-06T10:24:52ZengDe GruyterCurrent Directions in Biomedical Engineering2364-55042022-09-018236837110.1515/cdbme-2022-1094Design study of dynamic mechanical test bench specimen gripsFiedler Nicklas0Arbeiter Daniela1Kleine Thomas2Grabow Niels3Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Str. 4, 18119Rostock, GermanyInstitute for Biomedical Engineering, Rostock University Medical Center,Rostock , GermanyInstitute for Biomedical Engineering, Rostock University Medical Center,Rostock , GermanyInstitute for Biomedical Engineering, Rostock University Medical Center,Rostock , GermanyThe characterization of mechanical properties of materials used in biomedical applications is essential for performance evaluation. In addition to quasi-static tests, dynamic tests extend the range of methods and allow predictions of failure, as well as information on durability. Appropriate specimen grips according to the test sample geometry are crucial for a reliable examination of mechanical testing and therefore valid experimental data. In particular, the investigation of polymers is challenging, as properties show major differences depending on temperature and applied loading rate. This could result in slipping or tearing of samples in the specimen grip area. Numerical simulations of reference grips, as well as alternative custom designs, were performed evaluating damage due to the clamping process and to provide appropriate specimen grips for future dynamic-mechanical investigations of materials with variable properties. Both the results of the numerical simulation and preliminary tests with 3D-printed prototypes show a distinct improvement in specimen clamping. Plastic deformation and local stress peaks were reduced while maintaining the same tightening torque.https://doi.org/10.1515/cdbme-2022-1094dynamic-mechanical testingspecimen gripclampingpolymerdesignfinite element analysisnumerical simulation |
| spellingShingle | Fiedler Nicklas Arbeiter Daniela Kleine Thomas Grabow Niels Design study of dynamic mechanical test bench specimen grips Current Directions in Biomedical Engineering dynamic-mechanical testing specimen grip clamping polymer design finite element analysis numerical simulation |
| title | Design study of dynamic mechanical test bench specimen grips |
| title_full | Design study of dynamic mechanical test bench specimen grips |
| title_fullStr | Design study of dynamic mechanical test bench specimen grips |
| title_full_unstemmed | Design study of dynamic mechanical test bench specimen grips |
| title_short | Design study of dynamic mechanical test bench specimen grips |
| title_sort | design study of dynamic mechanical test bench specimen grips |
| topic | dynamic-mechanical testing specimen grip clamping polymer design finite element analysis numerical simulation |
| url | https://doi.org/10.1515/cdbme-2022-1094 |
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