Dilshad Ahmad
Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch
Ahmad, Dilshad; Ajaj, Rafic M.; Amoozgar, Mohammadreza
Abstract
There is an emerging trend in the morphing aircraft research where two or more morphing degrees of freedom are used on a wing which leads to the concept of polymorphing. The skin of the morphing wing must be flexible in the morphing direction but stiff in other directions to withstand the aerodynamic loads and maintain the airfoil shape. Polymorphing changes the loadings profile (from uniaxial to biaxial) and increases the complexity of designing suitable morphing skins. Furthermore, elastomeric materials used on morphing wings are usually prestretched to prevent wrinkling and to increase their out-of-plane stiffness. This paper focuses on elastomeric morphing skins and it studies the effect of biaxial strain rates and prestretch ratios on important mechanical properties such as stiffness, hysteresis losses (%), and stress relaxations (%) from an experimental perspective. Three polymeric materials are considered: Latex, Oppo, and Ecoflex. This study provides a mechanical comparative understanding of the three polymers used in the morphing wing under biaxial loading (two morphing degrees of freedom).
Citation
Ahmad, D., Ajaj, R. M., & Amoozgar, M. (2022). Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch. Polymer Testing, 113, Article 107655. https://doi.org/10.1016/j.polymertesting.2022.107655
Journal Article Type | Article |
---|---|
Acceptance Date | May 31, 2022 |
Online Publication Date | Jun 6, 2022 |
Publication Date | Sep 1, 2022 |
Deposit Date | Jun 13, 2022 |
Publicly Available Date | Mar 29, 2024 |
Journal | Polymer Testing |
Print ISSN | 0142-9418 |
Publisher | Elsevier BV |
Peer Reviewed | Peer Reviewed |
Volume | 113 |
Article Number | 107655 |
DOI | https://doi.org/10.1016/j.polymertesting.2022.107655 |
Keywords | Polymers and Plastics; Organic Chemistry |
Public URL | https://nottingham-repository.worktribe.com/output/8494662 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S0142941822001775?via%3Dihub |
Files
Elastomer-based skins
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Publisher Licence URL
https://creativecommons.org/licenses/by-nc-nd/4.0/
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