Development of Smart Braided Structures for Sensing of Geotechnical Structures

Sohel Rana, Raul Fangueiro, Antonio Gomes Correia

Research output: Contribution to journalConference article

Abstract

This paper reports the development of innovative tri-axial braided structures for strain and damage sensing of geotechnical structures. These innovative braided structures have been developed through braiding of polyester multi-filaments over an axial core composed of mixture of conductive (carbon) and non-conductive (glass) fibres. It was observed that the developed structures were capable of self-monitoring of strain and damage and tailoring the composition of core fibres resulted in excellent sensing of low strain in continuous manner with gauge factor as high as 23. It was further observed that the mechanical performance and surface roughness (which controls their adhesion with soils) could be easily tailored through adjustment of core and sheath component's parameters, respectively. Furthermore, a self-sensing epoxy matrix containing uniformly distributed short carbon fibres was developed in order to combine with the developed braided structures (through impregnation using a special technique) and to further enhance their self-sensing capability. The results discussed in this paper depict that these tailorable and innovative braided structures can be advantageously applied in geotechnical structures for sensing purposes.

Original languageEnglish
Pages (from-to)1218-1225
Number of pages8
JournalProcedia Engineering
Volume143
Early online date16 Jul 2016
DOIs
Publication statusPublished - 16 Jul 2016
Externally publishedYes
Event3rd International Conference on Transportation Geotechnics - Guimaraes, Portugal
Duration: 4 Sep 20167 Sep 2016
Conference number: 3

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