An investigation of the use of embedded FBG sensors to measure temperature and strain inside a concrete beam during the curing period and strain measurements under operational loading

Fernando, C. and Bernier, A. and Banerjee, S. ORCID: https://orcid.org/0000-0001-5446-5290 and Kahandawa, G. and Eppaarchchi, J. (2017) An investigation of the use of embedded FBG sensors to measure temperature and strain inside a concrete beam during the curing period and strain measurements under operational loading. In: 6th Asia Pacific Workshop on Structural Health Monitoring (APWSHM 2016), 7 Dec - 9 Dec 2016, Hobart, Australia.

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Abstract

Infrastructure systems are critical for sustaining and maintaining a nation’s socioeconomic system. The critical
infrastructure is a term used by governments to describe assets that are essential for the functioning of a society
and economy. The critical infrastructure systems are complex systems that are dynamic. During a typical lifespan,
critical infrastructure is inevitably subjected to environmental effects, long-term loading effects, material
deterioration and/or extreme loading effects such as corrosion, fatigue, aging, earthquakes, hurricanes, extreme
temperature, etc. The increased use of critical infrastructure for load bearing structures has alarmed the related
industries to immediate need of structural health monitoring (SHM) systems to ensure safe operation of the critical
infrastructure. The SHM process is an important feature to achieve technological leaps in the design and operation
of engineering infrastructures. Karbhari (2005) stated a generalize definition of SHM featuring non -destructive
in-situ sensing. The SHM process involves analysis of structural characteristics and structural response for the
purpose of estimating the severity of damage / deterioration. Then SHM evaluates the consequences thereof on
the structure in terms of response, capacity and service life. Karbhari and Ansari (2009) described that a SHM
system includes main operations of acquisition, validation, analysis, prognosis and management. In SHM
miniaturized sensors have been embedded in smart composite materials in order to mitigate t he risk of failure due
to an overload or an unwanted inhomogeneity resulting from the fabrication process (Kinet et al 2014). Monitoring
strain by measuring the wavelength shift of the light reflected from the FBG sensor has often been applied in
conventional health monitoring. Epaarachchi et al. (2007, 2009), Kahandawa et al (2011) have successfully used
embedded FBG sensors to measure internal strain and investigated the change of spectral shapes and change of
strain in the vicinity of a damage. FBG sensors have attracted much attention for SHM applications due to their
great advantages, such as high accuracy in measuring strain and/or temperature and multiplexing capability (Hill
and Meltz 1997; Kersey et al. 1997).


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Date Deposited: 10 Mar 2022 04:38
Last Modified: 30 May 2022 01:06
Uncontrolled Keywords: Temperature; Strain; Concrete Structures.
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
40 ENGINEERING > 4099 Other engineering > 409902 Engineering instrumentation
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
12 CONSTRUCTION > 1203 Construction materials performance and processes > 120301 Cement and concrete materials
Identification Number or DOI: https://doi.org/10.1016/j.proeng.2017.04.500
URI: http://eprints.usq.edu.au/id/eprint/46228

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