Computational & Technology Resources
an online resource for computational,
engineering & technology publications
Civil-Comp Proceedings
ISSN 1759-3433
CCP: 106
Edited by:
Paper 97

Non-Linear Characterisation of Kevlar and Silicon Carbide Fibres for Structural Health Monitoring Applications

E. Pinotti1, L. Zanotti Fragonara1, S. Jain2, V. Lunkar2, V. Bhanu2, S. Caron3, A. De Marchi3, R. Ceravolo1 and C. Surace1

1Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Italy
2Thapar Institute of Engineering and Technology, Patiala, India
3Department of Electronic and Telecommunications, Politecnico di Torino, Italy

Full Bibliographic Reference for this paper
E. Pinotti, L. Zanotti Fragonara, S. Jain, V. Lunkar, V. Bhanu, S. Caron, A. De Marchi, R. Ceravolo, C. Surace, "Non-Linear Characterisation of Kevlar and Silicon Carbide Fibres for Structural Health Monitoring Applications", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 97, 2014. doi:10.4203/ccp.106.97
Keywords: structural health monitoring, silicon carbide cables, steel cables, cable stayed bridges, non-destructive non-linearity test..

Uncertainties about the long term bearing capacity of aramid fibres have made designers reluctant to utilize them for external pre-stressing for cable-stayed bridges. Recent research carried out on cable-stayed bridges has found that the steel cables, although well protected from the external environment, are subject to corrosion, resulting in a risk of structural defects and malfunctions. The question that prompted this study is whether simple and non-destructive non-linearity tests can be used for assessing structural damage in aramid fibres or elements. The concept is to detect weak non-linearities in the dynamic response measured on fibres and ropes and to use the level of non-linearity as an indicator for evaluating the residual life span of aramid elements, cables and ropes. In perspective, a non-linearity test may be easily integrated in structural health monitoring protocols to be employed on aramid cables and elements to collect timely notifications about possible anomalies in the structural behaviour. In order to investigate the sensitivity of such an approach to structural health monitoring, non-linearity characterisation tests were conducted on aramid fibres by applying controlled sweep-sine excitations at different loading levels. In order to have a comparative term and to test the setup machine, a similar characterisation procedure was also applied to a novel material, the silicon carbide, which is known to exhibit a purely brittle behaviour, with no appreciable plastic deformation.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £65 +P&P)