Torsion-induced stick-slip phenomena in the delamination of soft adhesives
Soft adhesive contacts are ubiquitous in nature and are increasingly used in synthetic systems, such as flexible electronics and soft robots, due to their advantages over traditional joining techniques. While methods to study the failure of adhesives typically apply tensile loads to the adhesive joi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Royal Society of Chemistry (RSC)
2023
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| Online Access: | https://hdl.handle.net/1721.1/150420 |
| _version_ | 1826216899234496512 |
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| author | Venkatadri, Tara K Henzel, Thomas Cohen, Tal |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Venkatadri, Tara K Henzel, Thomas Cohen, Tal |
| author_sort | Venkatadri, Tara K |
| collection | MIT |
| description | Soft adhesive contacts are ubiquitous in nature and are increasingly used in synthetic systems, such as flexible electronics and soft robots, due to their advantages over traditional joining techniques. While methods to study the failure of adhesives typically apply tensile loads to the adhesive joint, less is known about the performance of soft adhesives under shear and torsion, which may become important in engineering applications. A major challenge that has hindered the characterization of shear/torsion-induced delamination is imposed by the fact that, even after delamination, contact with the substrate is maintained, thus allowing for frictional sliding and re-adhesion. In this work, we address this gap by studying the controlled delamination of soft cylinders under combined compression and torsion. Our experimental observations expose the nucleation of delamination at an imperfection and its propagation along the circumference of the cylinder. The observed sequence of ‘stick-slip’ events and the sensitivity of the delamination process to material parameters are explained by a theoretical model that captures axisymmetric delamination patterns, along with the subsequent frictional sliding and re-adhesion. By opening up an avenue for improved characterization of adhesive failure, our experimental approach and theoretical framework can guide the design of adhesives in future applications. |
| first_indexed | 2024-09-23T16:54:53Z |
| format | Article |
| id | mit-1721.1/150420 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:54:53Z |
| publishDate | 2023 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1504202024-09-20T16:12:09Z Torsion-induced stick-slip phenomena in the delamination of soft adhesives Venkatadri, Tara K Henzel, Thomas Cohen, Tal Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Soft adhesive contacts are ubiquitous in nature and are increasingly used in synthetic systems, such as flexible electronics and soft robots, due to their advantages over traditional joining techniques. While methods to study the failure of adhesives typically apply tensile loads to the adhesive joint, less is known about the performance of soft adhesives under shear and torsion, which may become important in engineering applications. A major challenge that has hindered the characterization of shear/torsion-induced delamination is imposed by the fact that, even after delamination, contact with the substrate is maintained, thus allowing for frictional sliding and re-adhesion. In this work, we address this gap by studying the controlled delamination of soft cylinders under combined compression and torsion. Our experimental observations expose the nucleation of delamination at an imperfection and its propagation along the circumference of the cylinder. The observed sequence of ‘stick-slip’ events and the sensitivity of the delamination process to material parameters are explained by a theoretical model that captures axisymmetric delamination patterns, along with the subsequent frictional sliding and re-adhesion. By opening up an avenue for improved characterization of adhesive failure, our experimental approach and theoretical framework can guide the design of adhesives in future applications. 2023-04-05T13:41:43Z 2023-04-05T13:41:43Z 2023-03-15 2023-04-05T13:34:46Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/150420 Venkatadri, Tara K, Henzel, Thomas and Cohen, Tal. 2023. "Torsion-induced stick-slip phenomena in the delamination of soft adhesives." Soft Matter. en 10.1039/d2sm01675c Soft Matter Creative Commons Attribution NonCommercial License 3.0 https://creativecommons.org/licenses/by-nc/3.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry (RSC) |
| spellingShingle | Venkatadri, Tara K Henzel, Thomas Cohen, Tal Torsion-induced stick-slip phenomena in the delamination of soft adhesives |
| title | Torsion-induced stick-slip phenomena in the delamination of soft adhesives |
| title_full | Torsion-induced stick-slip phenomena in the delamination of soft adhesives |
| title_fullStr | Torsion-induced stick-slip phenomena in the delamination of soft adhesives |
| title_full_unstemmed | Torsion-induced stick-slip phenomena in the delamination of soft adhesives |
| title_short | Torsion-induced stick-slip phenomena in the delamination of soft adhesives |
| title_sort | torsion induced stick slip phenomena in the delamination of soft adhesives |
| url | https://hdl.handle.net/1721.1/150420 |
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