Concrete temperature monitoring using passive wireless surface acoustic wave sensor system

    Authors

    J. Kim; R. Luis; M. S. Smith; J. A. Figueroa; D. C. Malocha;B. H. Nam

    Comments

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    Abbreviated Journal Title

    Sens. Actuator A-Phys.

    Keywords

    Surface acoustic wave (SAW) sensor; Temperature; Concrete; Orthogonal; frequency coding (OFC); PORTLAND-CEMENT; CURING TEMPERATURE; HYDRATION; PASTES; STRENGTH; POROSITY; KINETICS; PHASES; WATER; TAGS; Engineering, Electrical & Electronic; Instruments & Instrumentation

    Abstract

    In this paper, a novel nondestructive method for detecting temperature variations of concrete using a passive wireless surface acoustic wave (SAW) sensor system is described. Performance of the SAW orthogonal frequency coded (OFC) temperature sensors was evaluated in air, liquid, and concrete. To verify the response of the SAW sensor, temperature was also measured using commercially available thermocouples and compared with the extracted temperature in all environmental conditions. Analysis of the measured data showed that the SAW temperature sensor system was successful in detecting temperature over a wide range in all tested conditions with a high degree of accuracy and short interrogation time. When the sensors were embedded within a 2-in, thick concrete cover, the maximum read distance was approximately 4 m. (C) 2015 Elsevier B.V. All rights reserved.

    Journal Title

    Sensors and Actuators a-Physical

    Volume

    224

    Publication Date

    1-1-2015

    Document Type

    Article

    Language

    English

    First Page

    131

    Last Page

    139

    WOS Identifier

    WOS:000351809900018

    ISSN

    0924-4247

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