Quantitative and qualitative analysis of mechanical behavior and dimensional stability of styrene-based shape memory composites

Al Azzawi, Wessam and Islam, Mainul M. and Leng, Jinsong and Li, Fengfeng and Epaarachchi, Jayantha A. (2017) Quantitative and qualitative analysis of mechanical behavior and dimensional stability of styrene-based shape memory composites. Journal of Intelligent Material Systems and Structures. ISSN 1045-389X

Abstract

The effect of glass fiber reinforcement on the mechanical properties and geometrical shape stability during the thermomechanical cycle of the shape memory polymer composite has been investigated. A substantial improvement in the mechanical properties due to glass fiber reinforcement has been realized. However, unexpected deformation has been observed during heating process, particularly in the first thermomechanical cycle. This unanticipated deformation negatively affects the geometrical shape stability of the composite, and as a consequence the geometry preciseness of the structural parts manufactured with shape memory polymer composites will be reduced. In this article, the unanticipated thermal deformation in the shape memory polymer composites during the heating has been observed experimentally, and constitutive relationships to describe this behavior have been developed. Furthermore, an application of a constant tensile load during the heating process on the shape memory polymer composite part was found to be a reliable solution to reduce the thermal distortion effect and improve the geometric stability of the composite. The results showed that developed constitutive relations have shown a good agreement with the experimental results. Furthermore, the proposed applied tensile load has shown significant improvement in the shape memory polymer composite samples’ geometrical shape stability when subjected to a temperature increase.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published AricleFirst version cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 18 Jul 2017 03:29
Last Modified: 19 Apr 2018 04:44
Uncontrolled Keywords: shape memory polymers; composites; thermomechanical analysis; modeling
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
A Defence > 81 Defence > 8101 Defence > 810101 Air Force
Identification Number or DOI: 10.1177/1045389X17705210
URI: http://eprints.usq.edu.au/id/eprint/32467

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