Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)
Online ISSN : 2185-6567
ISSN-L : 2185-6567
Technical Note (In Japanese)
FUNDAMENTAL STUDY ON CRACK D ETECTION OF CONCRETE WITH MECHANOLUMINESCENT SENSOR UNDER DARK-FIELD
Yuichiro KAWABATADaisuke ONOChenshu LIEtsuko KAWASAKIMitsuyasu IWANAMIEma KATONaohiro UENOChao-Nan XU
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2011 Volume 67 Issue 3 Pages 430-435

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Abstract

 This study reports the applicability of mechanoluminescent (ML) sensor to crack detection of concrete under dark-field. ML sensor could emit a visible light when the crack formed in concrete under dark-field. There was a linear relationship between the time-integra ted value of ML intensity and the energy required for the crack formation and propagation, which wa s estimated by load-CMOD curve obtained from bending tests on concrete beams. Based on fracture mechanics of concrete, the mechanism of luminescent of ML sensor was examined.

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© 2011 by Japan Society of Civil Engineers
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