Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids
Body-temperature programmable elastic shape memory hybrids (SMHs) have great potential for the comfortable fitting of wearable devices. Traditionally, shore hardness is commonly used in the characterization of elastic materials. In this paper, the evolution of shore hardness in body-temperature prog...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/165406 |
| _version_ | 1826113993909993472 |
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| author | Naveen, Balasundaram Selvan Jose, Nivya Theresa Krishnan, Pranav Mohapatra, Subham Pendharkar, Vivek Koh, Nicholas Yuan Han Lim, Woon Yong Huang, Wei Min |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Naveen, Balasundaram Selvan Jose, Nivya Theresa Krishnan, Pranav Mohapatra, Subham Pendharkar, Vivek Koh, Nicholas Yuan Han Lim, Woon Yong Huang, Wei Min |
| author_sort | Naveen, Balasundaram Selvan |
| collection | NTU |
| description | Body-temperature programmable elastic shape memory hybrids (SMHs) have great potential for the comfortable fitting of wearable devices. Traditionally, shore hardness is commonly used in the characterization of elastic materials. In this paper, the evolution of shore hardness in body-temperature programmable elastic SMHs upon cyclic loading, and during the shape memory cycle, is systematically investigated. Upon cyclic loading, similar to the Mullins effect, significant softening appears, when the applied strain is over a certain value. On the other hand, after programming, in general, the measured hardness increases with increase in programming strain. However, for certain surfaces, the hardness decreases slightly and then increases rapidly. The underlying mechanism for this phenomenon is explained by the formation of micro-gaps between the inclusion and the matrix after programming. After heating, to melt the inclusions, all samples (both cyclically loaded and programmed) largely recover their original hardness. |
| first_indexed | 2024-10-01T03:31:56Z |
| format | Journal Article |
| id | ntu-10356/165406 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:31:56Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1654062023-04-01T16:47:50Z Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids Naveen, Balasundaram Selvan Jose, Nivya Theresa Krishnan, Pranav Mohapatra, Subham Pendharkar, Vivek Koh, Nicholas Yuan Han Lim, Woon Yong Huang, Wei Min School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Shore Hardness Shape Memory Effect Body-temperature programmable elastic shape memory hybrids (SMHs) have great potential for the comfortable fitting of wearable devices. Traditionally, shore hardness is commonly used in the characterization of elastic materials. In this paper, the evolution of shore hardness in body-temperature programmable elastic SMHs upon cyclic loading, and during the shape memory cycle, is systematically investigated. Upon cyclic loading, similar to the Mullins effect, significant softening appears, when the applied strain is over a certain value. On the other hand, after programming, in general, the measured hardness increases with increase in programming strain. However, for certain surfaces, the hardness decreases slightly and then increases rapidly. The underlying mechanism for this phenomenon is explained by the formation of micro-gaps between the inclusion and the matrix after programming. After heating, to melt the inclusions, all samples (both cyclically loaded and programmed) largely recover their original hardness. Published version 2023-03-27T01:44:23Z 2023-03-27T01:44:23Z 2022 Journal Article Naveen, B. S., Jose, N. T., Krishnan, P., Mohapatra, S., Pendharkar, V., Koh, N. Y. H., Lim, W. Y. & Huang, W. M. (2022). Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids. Polymers, 14(22), 4872-. https://dx.doi.org/10.3390/polym14224872 2073-4360 https://hdl.handle.net/10356/165406 10.3390/polym14224872 36432998 2-s2.0-85142444631 22 14 4872 en Polymers © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). application/pdf |
| spellingShingle | Engineering::Mechanical engineering Shore Hardness Shape Memory Effect Naveen, Balasundaram Selvan Jose, Nivya Theresa Krishnan, Pranav Mohapatra, Subham Pendharkar, Vivek Koh, Nicholas Yuan Han Lim, Woon Yong Huang, Wei Min Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids |
| title | Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids |
| title_full | Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids |
| title_fullStr | Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids |
| title_full_unstemmed | Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids |
| title_short | Evolution of shore hardness under uniaxial tension/compression in body-temperature programmable elastic shape memory hybrids |
| title_sort | evolution of shore hardness under uniaxial tension compression in body temperature programmable elastic shape memory hybrids |
| topic | Engineering::Mechanical engineering Shore Hardness Shape Memory Effect |
| url | https://hdl.handle.net/10356/165406 |
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