6 April 2012 Triboluminesence multifunctional cementitious composites with in situ damage sensing capability
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Abstract
Structural health monitoring of civil infrastructure systems like concrete bridges and dams has become critical because of the aging and overloading of these CIS. Most of the available SHM methods are not in-situ and can be very expensive. The triboluminescence multifunctional cementitious composites (TMCC) have in-built crack detection mechanism that can enable bridge engineers to monitor and detect abnormal crack formation in concrete structures so that timely corrective action can be taken to prevent costly or catastrophic failures. This article reports the fabrication process and test result of the flexural characterization of the TMCC. Accelerated durability test indicated that the 0.5 ZnS:Mn/Epoxy weight fraction ITOF sensor configuration to be more desirable in terms of durability. The alkaline environment at the highest temperature investigated (45 °C) resulted in significant reduction in the mean glass transition and storage moduli of the tested ITOF thin films. Further work is ongoing to correlate the TL response of the TMCC with damage, particularly crack opening.
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David O. Olawale, Tarik Dickens, Mohammed J. Uddin, Okenwa O. Okoli, "Triboluminesence multifunctional cementitious composites with in situ damage sensing capability", Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 834538 (6 April 2012); doi: 10.1117/12.915452; https://doi.org/10.1117/12.915452
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KEYWORDS
Sensors

Cements

Composites

Structural health monitoring

Bridges

Coating

Environmental sensing

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