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On the stress recovery behaviour of Ecoflex silicone rubbers

Zisheng Liao, Jie Yang, Mokarram Hossain Orcid Logo, Gregory Chagnon, Lin Jing, Xiaohu Yao

International Journal of Mechanical Sciences, Volume: 206, Start page: 106624

Swansea University Author: Mokarram Hossain Orcid Logo

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Abstract

Silicone rubbers are promising materials that have extensively been used in many areas, including wearable electronic devices, actuator materials in soft robotics, and energy harvesters. Ecoflex, a commercially available polymer, is a group of silicone rubbers appearing with various Shore hardnesses...

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Published in: International Journal of Mechanical Sciences
ISSN: 0020-7403
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57203
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spelling 2021-07-14T15:56:24.2828721 v2 57203 2021-06-24 On the stress recovery behaviour of Ecoflex silicone rubbers 140f4aa5c5ec18ec173c8542a7fddafd 0000-0002-4616-1104 Mokarram Hossain Mokarram Hossain true false 2021-06-24 GENG Silicone rubbers are promising materials that have extensively been used in many areas, including wearable electronic devices, actuator materials in soft robotics, and energy harvesters. Ecoflex, a commercially available polymer, is a group of silicone rubbers appearing with various Shore hardnesses that has become popular in recent years. While silicone rubbers in their real applications are subjected to repeated loading-unloading conditions, their mechanical behaviour under cyclic loading in different deformation modes and the corresponding stress recovery behaviour are yet to be well investigated. In this contribution, we conduct loading-unloading cyclic experiments in different time gaps between the first cycle and the second cycle to demonstrate the stress recovery behaviour after stress softening happens during the first cycle. For that, three different modes of deformations, i.e., uniaxial tension, planar tension, and equibiaxial tension tests are selected. Besides, Shore hardness dependence with different strain levels is also taken into consideration. The results show that the stress softening could recover significantly with time. These findings will help to understand the mechanical behaviour of Ecoflex silicone rubbers before selecting them in practical applications that are exposed to repeated loading-unloading cycles. Journal Article International Journal of Mechanical Sciences 206 106624 Elsevier BV 0020-7403 Ecoflex silicone rubber; Stress recovery; Shore hardness; Deformation mode 15 9 2021 2021-09-15 10.1016/j.ijmecsci.2021.106624 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2021-07-14T15:56:24.2828721 2021-06-24T14:55:34.2734984 College of Engineering Engineering Zisheng Liao 1 Jie Yang 2 Mokarram Hossain 0000-0002-4616-1104 3 Gregory Chagnon 4 Lin Jing 5 Xiaohu Yao 6 57203__20249__b514b6cfaabb4b49b4bd4e17b00e6f24.pdf 57203.pdf 2021-06-24T14:58:33.3762893 Output 6380419 application/pdf Accepted Manuscript true 2022-06-24T00:00:00.0000000 Released under the terms of a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title On the stress recovery behaviour of Ecoflex silicone rubbers
spellingShingle On the stress recovery behaviour of Ecoflex silicone rubbers
Mokarram Hossain
title_short On the stress recovery behaviour of Ecoflex silicone rubbers
title_full On the stress recovery behaviour of Ecoflex silicone rubbers
title_fullStr On the stress recovery behaviour of Ecoflex silicone rubbers
title_full_unstemmed On the stress recovery behaviour of Ecoflex silicone rubbers
title_sort On the stress recovery behaviour of Ecoflex silicone rubbers
author_id_str_mv 140f4aa5c5ec18ec173c8542a7fddafd
author_id_fullname_str_mv 140f4aa5c5ec18ec173c8542a7fddafd_***_Mokarram Hossain
author Mokarram Hossain
author2 Zisheng Liao
Jie Yang
Mokarram Hossain
Gregory Chagnon
Lin Jing
Xiaohu Yao
format Journal article
container_title International Journal of Mechanical Sciences
container_volume 206
container_start_page 106624
publishDate 2021
institution Swansea University
issn 0020-7403
doi_str_mv 10.1016/j.ijmecsci.2021.106624
publisher Elsevier BV
college_str College of Engineering
hierarchytype
hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 0
description Silicone rubbers are promising materials that have extensively been used in many areas, including wearable electronic devices, actuator materials in soft robotics, and energy harvesters. Ecoflex, a commercially available polymer, is a group of silicone rubbers appearing with various Shore hardnesses that has become popular in recent years. While silicone rubbers in their real applications are subjected to repeated loading-unloading conditions, their mechanical behaviour under cyclic loading in different deformation modes and the corresponding stress recovery behaviour are yet to be well investigated. In this contribution, we conduct loading-unloading cyclic experiments in different time gaps between the first cycle and the second cycle to demonstrate the stress recovery behaviour after stress softening happens during the first cycle. For that, three different modes of deformations, i.e., uniaxial tension, planar tension, and equibiaxial tension tests are selected. Besides, Shore hardness dependence with different strain levels is also taken into consideration. The results show that the stress softening could recover significantly with time. These findings will help to understand the mechanical behaviour of Ecoflex silicone rubbers before selecting them in practical applications that are exposed to repeated loading-unloading cycles.
published_date 2021-09-15T04:13:13Z
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