Durability of viscoelastic fibre prestressing in a polymeric composite

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Lin, Xueqi, Wang, Bing, Zhao, Chenmin, Nsengiyumva, Walter, Zhong, Shuncong, Chen, Hui and Liu, Dianzi (2023) Durability of viscoelastic fibre prestressing in a polymeric composite. Polymers, 15 (4). ISSN 2073-4360

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Abstract

Viscoelastic fibre prestressing (VFP) is a promising technique to counterbalance the potential thermal residual stress within a polymeric composite, offering superior mechanical benefits for structural engineering applications. It has been demonstrated that the time required for a desirable creep strain can be significantly reduced by implementing higher creep stress, while its long-term stability is still unknown. Here, we developed the prestress equivalence principle and investigated the durability of viscoelastic fibre prestressing within a composite in order to further enrich the prestress mechanisms. The effectiveness of the prestress equivalence principle was refined through Charpy impact testing of prestressed samples with various pre-strain levels. The durability was investigated by subjecting samples to both natural aging (up to 0.5 years) and accelerated aging (by using the time-temperature superposition principle). It is found that the prestress equivalence principle offers flexibility for viscoelastically prestressed polymeric matrix composite (VPPMC) technology; the impact benefits offered by VFP are still active after being accelerated aged to an equivalent of 20,000 years at 20 °C, inferring long-term reliability of VFP-generated fibre recovery within a polymeric composite. These findings demonstrated that both materials and energy consumption could be conserved for advanced composites. Therefore, they promote further steps of VPPMC technology toward potential industrial applications, especially for impact protection.

Item Type:	Article
Additional Information:	Funding: The author thanks the financial supports from National Natural Science Foundation of China (52005108, 52275096), Fuzhou-Xiamen-Quanzhou National Independent Innovation Demonstration Zone High-end Equipment Vibration and Noise Detection and Fault Diagnosis Collaborative Innovation Platform Project, as well as the Start-up Funding from Fuzhou University (GXRC-20066).
Uncontrolled Keywords:	durability,impact,polymeric composite,prestress,viscoelasticity,chemistry(all),polymers and plastics ,/dk/atira/pure/subjectarea/asjc/1600
Faculty \ School:	Faculty of Science > School of Engineering
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	03 Feb 2023 17:30
Last Modified:	13 Mar 2023 09:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/90972
DOI:	10.3390/polym15040811

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